WO2016070691A1

WO2016070691A1 - Service-oriented substation monitoring system architecture

Info

Publication number: WO2016070691A1
Application number: PCT/CN2015/090855
Authority: WO
Inventors: 张海滨; 万书鹏; 黄昆; 翟明玉; 王海峰; 潘洪湘
Original assignee: 国电南瑞科技股份有限公司
Priority date: 2014-11-04
Filing date: 2015-09-26
Publication date: 2016-05-12
Also published as: CN104348254A; CN104348254B

Abstract

A service-oriented substation monitoring system architecture, comprising: a uniform platform layer, the uniform platform layer being a platform established in a substation, having uniform standards and uniform technology as a smart grid dispatching technology support system, and used for providing support and services to an application layer of the substation monitoring system architecture; the application layer, used for providing basic applications and distributed applications built on the basis of the uniform platform layer for substation monitoring operations; an interactive service layer for providing support services for information interaction between the grid dispatching system and, respectively, the uniform platform layer and distributed applications in the application layer; a wide area service bus separately connected to the interactive service layer and to the grid dispatching system and being used for providing a communications mechanism, a real-time access interface, and bus management features for long-distance information interaction between the substation and the grid dispatching system. The present system architecture integrates grid dispatching systems and substations and standardizes operation management.

Description

Service-oriented substation monitoring system architecture

Technical field

The invention relates to the field of substation automation, in particular to a service oriented substation monitoring system architecture.

Background technique

In recent years, the rapid development of smart grid construction, the technical level and complexity of grid operation are getting higher and higher, coupled with the large-scale centralized development and delivery of clean energy, the difficulty of grid operation is increasing, and these are standardized for grid operation control. The level of integration and interaction raises high demands. In the field of substation, through the construction of intelligent substation, the digitalization and informationization of substation equipment in the power grid has been realized, and some advanced application functions have been initially realized.

In recent years, some researches have been carried out on the distributed application functions of power grids at home and abroad. Foreign CIGRE proposed the concept of distributed state estimation in the 21st century EMS technical white paper. Texas A&M University proposed two-level distributed distribution system and substation. The architecture of intelligent alarms. Domestically, the smart grid dispatching technical support system has been fully promoted and applied in the national power grid; the intelligent substation has entered the stage of comprehensive construction, and the new generation of intelligent substation is being piloted; some scholars have carried out the estimation of the distributed state of the grid dispatching system and substation. The research has achieved initial results. Overall, research and application at home and abroad have focused on distributed research on application functions, and lack of support structure for integration and standardization of grid dispatching systems and substations. Therefore, there is still room for improvement in the integration and standardization of the overall operation and management of the power grid.

Summary of the invention

The technical problem to be solved by the present invention is to provide a service-oriented substation monitoring system architecture, which can realize the integration and standardized operation management of the power grid dispatching system and the substation.

In order to solve the above technical problem, the present invention provides a service oriented substation monitoring system rack Structure, including:

Unified platform layer, which is a unified standard and unified technology platform established in the substation and the smart grid dispatching technical support system for providing support and services to the application layer of the substation monitoring system architecture;

An application layer, configured to provide a basic application and a distributed application for a substation monitoring service based on the unified platform layer;

An interaction service layer, configured to provide a support service for the grid scheduling system to separately interact with the information of the unified platform layer and the distributed application of the application layer;

The wide area service bus is respectively connected to the interaction service layer and the power grid dispatching system for providing a communication mechanism, a real-time access interface and a bus management function for remote information interaction between the substation and the power grid dispatching system.

The unified platform layer includes:

a communication bus sublayer for providing a communication interaction mechanism inside the substation monitoring system;

a data bus sublayer for providing storage, management, and access interfaces for data;

a system management module, configured to configure and manage an operating state of the substation monitoring system;

a rights management module, configured to provide permission control for the basic application of the application layer and the use and maintenance of the distributed application;

a model management module, configured to provide basic model data for the application layer and manage the model data;

a human machine interface module, configured to provide a unified human-machine interface for the basic application and the distributed application of the application layer;

The security protection module is configured to provide a deep security authentication strategy between the substation and the power grid dispatching system.

The basic applications of the application layer include:

The data acquisition module is configured to collect operating state data of the first and second equipments in the substation, and transmit the data to the data acquisition and monitoring control module;

a data monitoring control module, configured to receive operating state data transmitted by the data acquisition module Line data processing and issuing control commands;

And a telecontrol transmission module, configured to transmit the operational status data processed by the data monitoring control module to the power grid scheduling system, and receive and forward a scheduling control command of the power grid scheduling system.

The distributed application of the application layer includes:

a state estimation module, configured to preprocess operation state data of the substation, and transmit the preprocessed operation state data to the power grid scheduling system through the interaction service layer to perform network state estimation;

a sequence control module, wherein the substation monitoring system automatically performs related operation tasks in an order specified by the operation ticket, and performs sequential control information interaction with the power grid dispatching system through the interaction service layer, thereby implementing the power grid scheduling system scheduling Remote sequence control function;

The intelligent alarm module is configured to collect fault monitoring information from the substation, extract and analyze fault diagnosis information therefrom, and transmit fault diagnosis information to the grid dispatching system through the interaction service layer.

The interaction service layer includes a state estimation service module, a smart alarm service module, a sequence control service module, a remote screen browsing service module, a model service module, a historical data query service module, and a security authentication service module.

The service-oriented substation monitoring system architecture provided by the invention has the beneficial effects of: a substation wide-area collaborative system architecture with unified standard and unified technology of the smart grid dispatching technical support system, realizing the integration of the power grid dispatching system and the substation Standardized operation management; through the establishment of various interactive services for scheduling, the current situation that the substation can only transmit real-time data to the dispatch through the telecontrol communication protocol has been changed, and the substation's service support capability for dispatching has been significantly improved; The wide-area service bus of the real-time monitoring environment, independent of the hardware platform, operating system and programming language that implements the service, shields the underlying communication technology and application processing methods required for data exchange. The calling interface is simple and flexible, so that the architecture has Good dynamic scalability, which is conducive to future service expansion and improves system scalability and adaptability.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a structural block diagram of a service-oriented substation monitoring system architecture according to an embodiment of the present invention;

2 is a schematic diagram of wide-area cooperation between a substation and a power grid dispatching system.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 is a structural block diagram of a service-oriented substation monitoring system architecture provided by an embodiment of the present invention, as shown in FIG. 1, including:

Unified platform layer, which is a unified standard and unified technology platform established in the substation and the smart grid dispatching technical support system, and is used for providing support and services to the application layer of the substation monitoring system architecture; The grid dispatching technical support system is specifically the D5000 smart grid dispatching technical support system;

a wide area service bus, wherein the wide area service bus is respectively connected to the interaction service layer and the power grid scheduling system, and is configured to provide a communication mechanism, a real-time access interface, and a bus management function for remote information interaction between the substation and the power grid dispatching system. .

Further, as shown in Figure 1, the unified platform layer is located at the bottom of the substation monitoring system architecture, and is also the basis of the entire system architecture, accessing the external operating system layer and hardware layer, unified platform layer specific The platform technology of the smart grid dispatching technical support system is adopted, which has standard, open, reliable and safe technical features and good adaptability. The unified platform layer includes:

a communication bus sublayer, configured to provide a communication interaction mechanism inside the substation monitoring system, specifically a fast and standardized communication interaction mechanism; wherein the communication bus sublayer includes a message bus and a service bus, and the message bus is used to provide multiple Communication model and communication form, thereby realizing high-speed sharing of internal information of the substation monitoring system. Specifically, the message bus provides one-to-one and one-to-many communication models, and supports different broadcast, multicast, and point-to-point TCP in communication forms. The communication form, various applications can flexibly call the interface method provided by the message bus to publish, subscribe, send and receive the message; the service bus is used to provide the communication mechanism and access interface between the application processes, and between the application processes. Request information and response result information;

a data bus sub-layer for providing data storage, management, and access interfaces; specifically, the data bus sub-layer includes: a real-time database for storing and managing real-time data that needs to be quickly accessed by the application layer in the memory (specifically a real-time state quantity, an analog quantity, an electrical quantity, a data model, and other data, etc., and a function access interface for the application layer; a history database module for storing historical data collected by the substation monitoring system (specifically, COS, SOE, analog sample values and other historical data), and provide function access interface and SQL access interface for the application layer; file storage for storing data files on the hard disk (specifically, various parameter files, protection fault waveform files) And monitoring data files, etc., and providing a file access interface for the application layer; the various access interfaces described above are unified, standard access interfaces;

The system management module is configured to configure and manage the running state of the substation monitoring system, which mainly includes starting and stopping of each node in the system, monitoring the running state of the process, and managing the active/standby redundancy mechanism between multiple servers in a service in the system. In addition, it also includes each node resource and running status monitoring, system operating parameter management;

The rights management module is configured to provide permission control for the basic application of the application layer and the use and maintenance of the distributed application; specifically, the multi-level and multi-granularity are realized through multiple levels of authority entities such as functions, roles, users, and groups. Permission control, also provides a user-friendly permission management tool to facilitate the setting and management of user permissions;

a model management module, configured to provide basic model data for the application layer and manage the model data; specifically, through substation configuration file parsing and model data import, database device and point record generation and management, and The network dispatching system model performs online synchronization maintenance and other functions to provide basic model data for the application layer;

The human-machine interface module is used to provide a unified human-machine interface for the basic application and the distributed application of the application layer; the graphic system, the graphic editor, the graphic browser and the like provided by the human-machine interface module support various applications and support Edit and display the graphics and graphics of various applications, and support the right-click menus and operations of various applications. The graphics system provides a convenient application interface to support the integration of applications and third-party software. The graphics editor completely uses the power system common graphics standard G language to store graphic files, and the graphics browser directly displays based on G language;

The security protection module is configured to provide a deep security authentication strategy between the substation and the power grid dispatching system; specifically, adopting technologies such as two-factor login, digital signature and authority authentication to improve the security of the remote communication of the primary substation.

It can be understood that the unified platform layer can also include other modules.

Further, the application layer is based on the unified platform layer to establish various basic applications and distributed applications for the substation monitoring service. They are completed by the communication bus, the data bus and various platform service modules, and have their own application functions. The ground is integrated to form a fully functional, reliable and stable station monitoring system.

The distributed application realizes comprehensive analysis and processing of various types of data collected by the system and completes advanced control functions, and realizes two-level distributed application functions of scheduling and substation through information exchange between the service layer and the power grid dispatching system, including state estimation and sequence control. , intelligent alarm and other modules.

The basic application of the application layer is some applications in which the system performs basic monitoring functions, including a data acquisition module, a data monitoring control module, and a telecontrol transmission module, wherein the data acquisition module is used to collect operating state data of the primary and secondary devices in the substation, and The data monitoring and control module is configured to receive the operating state data transmitted by the data collecting module, perform data processing, and issue a control command, thereby implementing remote signal debounce, telemetry exceeding limit, statistical calculation, Data quality processing, remote signal change alarm, switch knife gate control, protection setting, protection soft plate retraction, protection signal reset And a processing function of the four remote and protection data; the remote transmission module is configured to transmit the operational status data processed by the data monitoring control module to the power grid scheduling system, and receive and forward scheduling control of the power grid scheduling system The command, which provides standardized protocol communication with the grid dispatch system, supports a variety of telecontrol protocols. It can be understood that the basic application of the application layer can also include other modules.

The distributed application of the application layer realizes comprehensive analysis and processing of various types of data collected by the substation monitoring system and completes advanced control functions, and realizes two-level distributed application functions of scheduling and substation through information exchange between the interactive service layer and the power grid dispatching system. As shown in FIG. 1 , the distributed application of the application layer includes a state estimation module, a sequence control module, and an intelligent alarm module; and a state estimation module for preprocessing the operation state data of the substation (preprocessing mainly identifies and rejects bad data) And pre-processing operational state data is transmitted to the power grid dispatching system through the interaction service layer to perform network-wide state estimation, thereby realizing two-stage distributed state estimation of the dispatched substation, and improving the accuracy of state estimation of the power grid dispatching system a sequence control module for automatically performing the relevant operation tasks in the order specified by the operation ticket, and automatically checking the anti-missing logic before each step of the operation, automatically completing the operation of the plurality of control steps at one time, and passing The interaction service layer interacts with the power grid dispatching system to perform sequential control information, thereby implementing the sequential control function of the power grid dispatching system to dispatch remote locations; the intelligent alarm module is configured to collect fault monitoring information from the substation, and extract and analyze therefrom Fault diagnosis information, and through the interactive service The layer transmits fault diagnosis information to the power grid dispatching system; specifically, the intelligent alarm module establishes a standard fault diagnosis model at the substation level, and extracts and analyzes in real time from signals such as collected monitoring, relay protection, and fault recording. Alarm-related information, the diagnosis extracts the fault event chain that directly reflects the evolution process of the fault, and transmits the fault event chain to the grid dispatching system in real time through the intelligent alarm service, as the input of the online global integrated intelligent alarm function of the grid dispatching system, improving the whole network. The efficiency of fault diagnosis and processing. As can be appreciated, distributed applications can also include other modules.

Further, the interaction service layer includes a state estimation service module, a smart alarm service module, a sequence control service module, a remote screen browsing service module, a model service module, a historical data query service module, and a security authentication service module. As shown in Figure 2, the interactive service layer processes the monitoring screen, historical data, model, etc. or the application in the station by calling the service call interface provided by the wide area service bus. The information is sent to the grid dispatching system through the dispatching data network, and also receives commands such as browsing, querying, authentication and application management issued by the grid dispatching system to realize flexible and convenient interaction of application information between the substation and the grid dispatching system. As can be appreciated, the interactive service layer can also include other modules.

Further, the wide area service bus is a wide area service bus based on a service oriented architecture, which provides an information interaction means for real-time power monitoring environment between the power grid dispatching system and the substation, and has a wide range between the power grid dispatching system and the substation. Domain data exchange and service invocation functions provide efficient and reliable communication mechanism, real-time access interface and bus management function for remote information interaction. The wide area service bus provides both request/response and subscription/release communication methods to meet different business needs. The wide area service bus provides a set of service primitives, including service encapsulation and registration of various support services, management of various support services, and service calls to users. The bus management function is implemented by the service management center, and provides functions such as service registration, service work status monitoring, service active/standby switchover, service restart, and service load balancing.

The service-oriented substation monitoring system architecture provided by the embodiment of the invention is a substation wide-area collaborative system architecture with unified standard and unified technology of the smart grid dispatching technical support system, and realizes the integration and standardized operation management of the power grid dispatching system and the substation. By establishing various interactive services for scheduling, the current situation that substation can only transmit real-time data to the dispatching through telecontrol communication protocol is changed, which significantly improves the substation's ability to support the dispatching business; and proposes a real-time monitoring environment for electric power. The wide-area service bus, independent of the hardware platform, operating system and programming language that implements the service, shields the underlying communication technology and application processing methods required for data exchange. The calling interface is simple and flexible, and the architecture has good dynamics. Scalability helps future service expansion and improves system scalability and adaptability.

The service-oriented substation monitoring system architecture provided by the embodiment of the present invention changes the single interaction means between the power grid dispatching system and the substation, designs various interactive services, and adopts a service-oriented wide-area service bus to realize vertical service flexible call. Interoperability with information provides support for the coordination of various dispatch applications of power grid dispatching systems and substations, and improves the standardization, integration and interaction level of power grid dispatching systems and substations. Based on this architecture, the application functions of the current intelligent substation can be analyzed and summarized, and the service-oriented substation application can be designed and developed according to the principle of distributed integration. It can realize the distributed and integrated application of wide-area coordination between power grid dispatching system and substation.

It is to be understood that the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes those elements. It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, article, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

A person skilled in the art will further appreciate that the units described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate the interchangeability of hardware and software. The composition and steps of the examples have been generally described in terms of functions in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein can be implemented directly in hardware, a software module executed by a processor, or a combination of both. The software module can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field. Any other form of storage medium known.

The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but the scope of the invention is to be accorded

Claims

A service-oriented substation monitoring system architecture, comprising:

Unified platform layer, which is a unified standard and unified technology platform established in the substation and the smart grid dispatching technical support system for providing support and services to the application layer of the substation monitoring system architecture;

An application layer, configured to provide a basic application and a distributed application for a substation monitoring service based on the unified platform layer;

An interaction service layer, configured to provide a support service for the grid scheduling system to separately interact with the information of the unified platform layer and the distributed application of the application layer;

The wide area service bus is respectively connected to the interaction service layer and the power grid dispatching system for providing a communication mechanism, a real-time access interface and a bus management function for remote information interaction between the substation and the power grid dispatching system.
The service-oriented substation monitoring system architecture of claim 1 wherein the unified platform layer comprises:

a communication bus sublayer for providing a communication interaction mechanism inside the substation monitoring system;

a data bus sublayer for providing storage, management, and access interfaces for data;

a system management module, configured to configure and manage an operating state of the substation monitoring system;

a rights management module, configured to provide permission control for the basic application of the application layer and the use and maintenance of the distributed application;

a model management module, configured to provide basic model data for the application layer and manage the model data;

a human machine interface module, configured to provide a unified human-machine interface for the basic application and the distributed application of the application layer;

The security protection module is configured to provide a deep security authentication strategy between the substation and the power grid dispatching system.
The service-oriented substation monitoring system architecture according to claim 1, wherein the basic application of the application layer comprises:

The data acquisition module is configured to collect operating state data of the first and second equipments in the substation, and transmit the data to the data acquisition and monitoring control module;

a data monitoring control module, configured to receive the operating state data transmitted by the data collecting module, perform data processing, and issue a control command;

And a telecontrol transmission module, configured to transmit the operational status data processed by the data monitoring control module to the power grid scheduling system, and receive and forward a scheduling control command of the power grid scheduling system.
The service-oriented substation monitoring system architecture according to claim 1 or 2 or 3, wherein the distributed application of the application layer comprises:

a state estimation module, configured to preprocess operation state data of the substation, and transmit the preprocessed operation state data to the power grid scheduling system through the interaction service layer to perform network state estimation;

a sequence control module, wherein the substation monitoring system automatically performs related operation tasks in an order specified by the operation ticket, and performs sequential control information interaction with the power grid dispatching system through the interaction service layer, thereby implementing the power grid scheduling system scheduling Remote sequence control function;

The intelligent alarm module is configured to collect fault monitoring information from the substation, extract and analyze fault diagnosis information therefrom, and transmit fault diagnosis information to the grid dispatching system through the interaction service layer.
The service-oriented substation monitoring system architecture according to claim 4, wherein the interaction service layer comprises a state estimation service module, an intelligent alarm service module, a sequence control service module, a remote picture browsing service module, a model service module, Historical data query service module and security authentication service module.
The service-oriented substation monitoring system architecture of claim 1 wherein said wide area service bus comprises request/response and subscription/release communication.
The service oriented substation monitoring system architecture of claim 2 wherein said communication bus sublayer comprises:

a message bus for providing a plurality of communication models and communication forms for realizing high-speed sharing of internal information of the substation monitoring system;

The service bus is used to provide a communication mechanism and an access interface between application processes, and to transmit request information and response result information between application processes.
The service oriented substation monitoring system architecture of claim 2 wherein said data bus sublayer comprises:

a real-time database for storing and managing real-time data that the application layer in memory needs to access quickly, and providing a function access interface for the application layer;

a history database module, configured to store historical data collected by the substation monitoring system, and provide a function access interface and a SQL access interface for the application layer;

A file storage module, configured to store a data file on the hard disk and provide a file access interface for the application layer.