CN105676061A - System and method for testing disturbance identification function of wide-area measurement system - Google Patents

Abstract

An embodiment of the present invention provides a test system and method for the disturbance identification function of a wide-area measurement system, wherein the system includes: a real-time digital simulation device for simulating the operating state of a power system under a preset disturbance event; The simulation device of the measurement system includes: the synchronized phasor measurement device, connected with the real-time digital simulation device, used to collect the dynamic phasor data of each station in the simulated power system; the analog master station of the wide-area measurement system, connected with the synchronized phase It is used to receive the dynamic phasor data sent by the synchronized phasor measurement device, and analyze the dynamic phasor data to identify the disturbance event of the power system. The analog master station of the wide-area measurement system analyzes the dynamic phasor data Used to check against preset disturbance events to determine the performance of the disturbance recognition function of the wide-area measurement system. This scheme realizes the performance test of the disturbance identification function of the wide-area measurement system.

Description

Test system and method for disturbance recognition function of wide-area measurement system

technical field

The invention relates to the technical field of power system monitoring, in particular to a test system and method for a disturbance identification function of a wide-area measurement system.

Background technique

The Wide-area Measurement System (WAMS for short) is a comprehensive application system based on synchrophasor measurement and modern communication technology to monitor and analyze the operation status of the wide-area power grid and serve the real-time control and operation of the power grid. The wide-area measurement system focuses on the measurement of state quantities. The measured data is global and accurately unified on the same time coordinate, realizing the dynamic monitoring of the wide-area power system and providing an important technical means for power grid security monitoring. The measurement data based on WAMS can be applied to advanced functions such as online low-frequency oscillation analysis, hybrid state estimation, power angle stability prediction, fault location, and wide-area protection.

With the needs of power grid development and technological progress, WAMS will play a greater role in the dynamic monitoring of wide-area power systems, which puts forward higher requirements for the performance of WAMS systems. In order to avoid problems in the actual application process of WAMS and affect the overall function of WAMS, it is of great significance to carry out research on WAMS application function testing technology.

In the prior art, the dynamic simulation test system of the wide-area dynamic safety monitoring system is constructed in the dynamic simulation laboratory, as shown in Figure 1, the system consists of three parts: the substation system with the The main station system and the advanced application system of the analysis center station with the phasor data platform as the core. Based on this system, it is possible to test the basic functions of WAMS such as the electrical potential measurement algorithm in the generator, the phasor display of the main station system, the retrospective analysis of historical data, and the disturbance trigger record, but it cannot test the advanced application functions such as the disturbance identification function of WAMS. Performance is tested.

Contents of the invention

An embodiment of the present invention provides a test system for a disturbance identification function of a wide-area measurement system, so as to test the performance of the disturbance identification function of the wide-area measurement system. The system includes: a simulation device of the wide-area measurement system and a real-time digital simulation device, wherein the real-time digital simulation device is used to simulate the operating state of the power system under a preset disturbance event; the simulation device of the wide-area measurement system includes : Synchronized phasor measurement device, connected with the real-time digital simulation device, used to collect dynamic phasor data of each plant station in the simulated power system; the analog master station of the wide-area measurement system, connected with the described synchrophasor measurement device connected to receive the dynamic phasor data sent by the synchronized phasor measurement device, and analyze the dynamic phasor data to identify disturbance events of the power system, and the analog master station of the wide-area measurement system is responsible for the dynamic phasor The analysis result of the volume data is used to check with the preset disturbance event to determine the performance of the disturbance identification function of the wide area measurement system.

In one embodiment, the analog master station of the wide-area measurement system includes: a network switch, a communication server, and a simulation server of the wide-area measurement system, wherein the network switch connects the communication server and the wide-area measurement The simulation server of the system forms an Ethernet; the communication server is used to receive the dynamic phasor data sent by the synchrophasor measurement device through the Ethernet; the simulation server of the wide-area measurement system is used to obtain the The communication server acquires the dynamic phasor data and analyzes the dynamic phasor data to identify disturbance events of the power system.

In one embodiment, the analog master station of the wide-area measurement system further includes: a clock device, configured to provide standard time to the analog master station of the wide-area measurement system.

In one embodiment, the analog master station of the wide-area measurement system further includes: a network printer, configured to print online the analysis results of the dynamic phasor data by the analog master station of the wide-area measurement system.

In one embodiment, the preset disturbance event includes one or any combination of a generator shutdown event, a line disconnection event, and a line short circuit event.

The embodiment of the present invention also provides a method for testing the disturbance identification function of the wide-area measurement system, so as to test the performance of the disturbance identification function of the wide-area measurement system. The method includes: using a real-time digital simulation device to simulate the operating state of the power system under a preset disturbance event; using a synchronized phasor measurement device to collect dynamic phasor data of each power station in the simulated power system; using a wide-area measurement system to simulate The master station receives the dynamic phasor data sent by the synchronized phasor measurement device, and analyzes the dynamic phasor data to identify the disturbance event of the power system; The analysis results are checked against the preset disturbance events, and the performance of the disturbance identification function of the wide-area measurement system is determined according to the check results.

In one embodiment, the dynamic phasor data sent by the synchronized phasor measurement device is received by the analog master station of the wide-area measurement system, and the dynamic phasor data is analyzed to identify the disturbance event of the power system, including: The communication server in the analog master station of the wide-area measurement system uses Ethernet to receive the dynamic phasor data sent by the synchrophasor measurement device; the analog server of the wide-area measurement system in the analog master station of the wide-area measurement system uses The Ethernet retrieves the dynamic phasor data from the communication server and analyzes the dynamic phasor data to identify disturbance events of the power system.

In one embodiment, the method further includes: providing standard time to the analog master station of the wide-area measurement system through a clock device.

In one embodiment, the method further includes: online printing the analysis result of the dynamic phasor data by the analog master station of the wide-area measurement system through a network printer.

In one embodiment, the preset disturbance event includes one or any combination of a generator shutdown event, a line disconnection event, and a line short circuit event.

In the implementation of the present invention, the real-time digital simulation device is used to simulate the operating state of the power system under the preset disturbance event, and then the dynamic phasor data of the simulated power system is collected through the synchronized phasor measurement device, and the wide-area measurement system The simulated master station of the wide-area measurement system analyzes the dynamic phasor data to identify the disturbance event of the power system. As long as the analysis result of the simulated master station of the wide-area measurement system on the dynamic phasor data is checked with the preset disturbance event, the judgment can be made according to the check result The performance of the disturbance identification function of the wide-area measurement system is realized, so that the performance test of the disturbance identification function of the wide-area measurement system is realized, which is conducive to standardizing and ensuring the reliability and stability of the advanced application functions of the WAMS system, and is conducive to improving the operation of the power grid. Reliability matters.

Description of drawings

The drawings described here are used to provide further understanding of the present invention, constitute a part of the application, and do not limit the present invention. In the attached picture:

Fig. 1 is the schematic diagram of the dynamic simulation test system of the wide-area dynamic safety monitoring system in the prior art;

Fig. 2 is a structural block diagram of a test system for a disturbance recognition function of a wide-area measurement system provided by an embodiment of the present invention;

3 is a schematic diagram of a test system for a specific disturbance identification function of a wide-area measurement system provided by an embodiment of the present invention;

Fig. 4 is an IEEE three-machine nine-node power system model built in a real-time digital simulation device provided by an embodiment of the present invention;

Fig. 5 is a flowchart of a method for testing a disturbance recognition function of a wide-area measurement system provided by an embodiment of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

In an embodiment of the present invention, a test system for the disturbance identification function of a wide-area measurement system is provided. As shown in FIG. 2, the system includes:

A simulation device and a real-time digital simulation device of a wide-area measurement system, wherein,

The real-time digital simulation device 201 is used to simulate the operating state of the power system under a preset disturbance event,

Simulators for wide-area measurement systems, including:

The synchronized phasor measuring device 202 is connected with the real-time digital simulation device, and is used to collect dynamic phasor data of each station in the simulated power system;

The analog master station 203 of the wide-area measurement system is connected to the synchrophasor measurement device, and is used to receive the dynamic phasor data sent by the synchrophasor measurement device, and analyze the dynamic phasor data to identify the power system For a disturbance event, the analysis result of the dynamic phasor data by the analog master station of the wide-area measurement system is used for checking with the preset disturbance event to determine the performance of the disturbance identification function of the wide-area measurement system.

As can be seen from Figure 2, in the embodiment of the present invention, the operating state of the power system under a preset disturbance event is simulated by a real-time digital simulation device, and then the dynamic phasor of the simulated power system is collected by a synchronized phasor measurement device data, and analyze the dynamic phasor data by the analog master station of the wide-area measurement system to identify the disturbance event of the power system, as long as the analysis result of the dynamic phasor data by the analog master station of the wide-area measurement system is compared with the preset disturbance event Check, according to the check results, the performance of the disturbance recognition function of the wide-area measurement system can be judged, thereby realizing the performance test of the disturbance recognition function of the wide-area measurement system, which is conducive to standardizing and ensuring the reliability and reliability of the advanced application functions of the WAMS system. Stability is of great significance for improving the operational reliability of the power grid.

During the specific implementation, the function of the wide-area measurement system is simulated by the simulation device of the wide-area measurement system. The simulation device of the wide-area measurement system is composed of a synchrophasor measurement device and an analog master station of the wide-area measurement system. The measurement device mainly completes the dynamic synchronous collection of dynamic phasor data of each station in the simulated power system. The analog master station of the wide-area measurement system collects and stores the dynamic phasor data sent by the synchronized phasor measurement device, and recognizes the dynamic phasor data through disturbance identification. The software analyzes and processes the dynamic phasor data to identify disturbance events in the power system. Specifically, as shown in Figure 3, the analog master station of the wide-area measurement system includes: a network switch, a communication server and an analog server of the wide-area measurement system, wherein the network switch is connected to the communication server and the simulation server of the wide-area measurement system , to form an Ethernet; the communication server (ie, the front-end communication server) is used to receive the dynamic phasor data sent by the synchrophasor measurement device through the Ethernet, and process the PMU (PhasorMeasurementUnit, synchrophasor measurement device) of each factory station The real-time dynamic phasor data sent to complete the communication function with the PMU; the simulation server (ie WAMS system server) of the wide area measurement system is used to obtain the dynamic phasor data from the communication server through Ethernet, and analyze The dynamic phasor data identifies disturbance events of the power system to realize functions such as WAMS system platform, real-time data processing and analysis, historical data storage, and advanced application services.

In addition, during specific implementation, as shown in FIG. 3, the analog master station of the wide-area measurement system also includes: a clock device (for example, a GPS (Global Positioning System, Global Positioning System) device), which is used to send information to the wide-area measurement system. The analog master station provides standard time, that is, the communication server in the analog master station of the wide-area measurement system, the analog server and the network printer of the wide-area measurement system, etc., and the time is unified through the clock device. The analog master station of the wide-area measurement system may also include: a network printer, which is used to print online the analysis results of the dynamic phasor data by the analog master station of the wide-area measurement system, or print the dynamic phasor data curve online. The analog master station of the wide-area measurement system may also include a maintenance workstation, which is a PC workstation.

During specific implementation, the above real-time digital simulator (Real-time Digital Simulator, RTDS) can adopt the power system real-time digital simulation system launched by the DC Research Center of Manitoba, Canada. The multi-processor parallel computing method realizes the real-time digital simulation of the power system through the appropriate task distribution method and communication technology. It is a device specially designed to study electromagnetic transient phenomena in power systems. RSCAD is a software system of RTDS.

When performing the performance test of the disturbance recognition function of the wide-area measurement system, the IEEE three-machine nine-node power system model shown in Figure 4 can be built in a real-time digital simulation device to measure the operating status of the power system. As shown in Figure 4, G1 and G2 represent generator 1 and generator 2 respectively, T1 and T2 represent transformer 1 and transformer 2 respectively, L1~L6 represent lines 1 to 6 respectively, load 1, load 2 and load 3 respectively Represents the local loads of bus 5, bus 6, and bus 8, deploy four sets of independent PMU devices at nodes 1, 4, 7, and 9, and set the above-mentioned preset disturbance events in the IEEE three-machine nine-node power system carry out testing.

Specifically, a generator cut-off event. For example, set the generator (G1 or G2) to cut off, test whether the disturbance recognition software in the WAMS analog master station has a cut-off alarm, and verify the disturbance recognition of the WAMS analog master station according to the test parameters on the RTDS digital-analog test platform Whether the cut-off unit and cut-off time information in the analysis results given by the software is correct, if correct, the disturbance recognition function of WAMS is reliable, otherwise, the disturbance recognition function of WAMS is not reliable.

Line disconnection event. For example, set the line L1~L2 to be disconnected, test whether the disturbance recognition software in the WAMS simulation master station has a disconnection alarm, and verify the disturbance recognition software in the WAMS simulation master station according to the test parameters on the RTDS digital-analog test platform Whether the disconnected line and the disconnection time information in the given analysis results are correct, if correct, the disturbance identification function of WAMS is reliable, otherwise, the disturbance identification function of WAMS is not reliable.

Line short circuit event. For example, if single-phase short circuit, two-phase short circuit, two-phase ground short circuit, and three-phase short circuit occur on lines L1-L6, test whether there is a short-circuit alarm in the disturbance recognition software in the WAMS analog master station, and according to the RTDS digital-analog test platform Test parameter data, check whether the short-circuit time and short-circuit category information of the short-circuit line in the analysis results given by the disturbance identification software in the WAMS simulation master station are correct. If correct, the disturbance identification function of WAMS is reliable; otherwise, the disturbance identification function of WAMS The function is unreliable.

Based on the same inventive concept, an embodiment of the present invention also provides a method for testing the disturbance identification function of the wide-area measurement system, as described in the following embodiments. Since the problem-solving principle of the test method of the disturbance recognition function of the wide-area measurement system is similar to the test system of the disturbance recognition function of the wide-area measurement system, the implementation of the test method of the disturbance recognition function of the wide-area measurement system can be found in the wide-area measurement system The implementation of the test system for the disturbance recognition function, and the repetitions will not be repeated. As used below, the term "unit" or "module" may be a combination of software and/or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

Fig. 5 is the flow chart of the testing method of the disturbance identification function of the wide-area measurement system of the embodiment of the present invention, as shown in Fig. 5, this method comprises:

Step 501: using a real-time digital simulation device to simulate the operating state of the power system under a preset disturbance event;

Step 502: collecting dynamic phasor data of each power station in the simulated power system through the synchronized phasor measurement device;

Step 503: Receive the dynamic phasor data sent by the synchronized phasor measurement device through the analog master station of the wide-area measurement system, and analyze the dynamic phasor data to identify disturbance events of the power system;

Step 504: Check the analysis result of the dynamic phasor data by the analog master station of the wide-area measurement system with the preset disturbance event, and determine the performance of the disturbance identification function of the wide-area measurement system according to the checking result.

In one embodiment, the dynamic phasor data sent by the synchronized phasor measurement device is received by the analog master station of the wide-area measurement system, and the dynamic phasor data is analyzed to identify the disturbance event of the power system, including: The communication server in the analog master station of the wide-area measurement system uses Ethernet to receive the dynamic phasor data sent by the synchrophasor measurement device; the analog server of the wide-area measurement system in the analog master station of the wide-area measurement system uses The Ethernet obtains the dynamic phasor data from the communication server, and analyzes the dynamic phasor data to identify disturbance events of the power system.

In one embodiment, the method further includes: providing standard time to the analog master station of the wide-area measurement system through a clock device.

In one embodiment, the method further includes: online printing the analysis result of the dynamic phasor data by the analog master station of the wide-area measurement system through a network printer.

In one embodiment, the preset disturbance event includes one or any combination of a generator shutdown event, a line disconnection event, and a line short circuit event.

In the implementation of the present invention, the real-time digital simulation device is used to simulate the operating state of the power system under the preset disturbance event, and then the dynamic phasor data of the simulated power system is collected through the synchronized phasor measurement device, and the wide-area measurement system The simulated master station of the wide-area measurement system analyzes the dynamic phasor data to identify the disturbance event of the power system. As long as the analysis result of the simulated master station of the wide-area measurement system on the dynamic phasor data is checked with the preset disturbance event, the judgment can be made according to the check result The performance of the disturbance identification function of the wide-area measurement system is realized, so that the performance test of the disturbance identification function of the wide-area measurement system is realized, which is conducive to standardizing and ensuring the reliability and stability of the advanced application functions of the WAMS system, and is conducive to improving the operation of the power grid. Reliability matters.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned embodiments of the present invention can be implemented by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed among multiple computing devices. Optionally, they may be implemented in program code executable by a computing device, thereby, they may be stored in a storage device to be executed by a computing device, and in some cases, may be implemented in a code different from that described herein The steps shown or described are executed in sequence, or they are fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, various modifications and changes may be made to the embodiments of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. the test system of the disturbed depth function of a WAMS, it is characterised in that including: the analog of WAMS and real-timedigital simulation device, wherein,

Described real-timedigital simulation device, for simulating power system running status under default disturbance event;

The analog of WAMS, including:

Synchronous phasor measuring device, is connected with described real-timedigital simulation device, for gathering the Dynamic Phasors data of each plant stand in the power system of simulation;

The simulation main website of WAMS, it is connected with described synchronous phasor measuring device, for receiving the Dynamic Phasors data that described synchronous phasor measuring device sends, and analyze described Dynamic Phasors data to identify the disturbance event of power system, the analysis result of described Dynamic Phasors data is used for checking with described default disturbance event by the simulation main website of described WAMS, determines the performance of the disturbed depth function of described WAMS.

2. the test system of the disturbed depth function of WAMS as claimed in claim 1, it is characterised in that the simulation main website of described WAMS, including: the emulating server of the network switch, communication server and WAMS, wherein,

The described network switch connects the emulating server of described communication server and described WAMS, forms Ethernet;

Described communication server, for receiving, by Ethernet, the Dynamic Phasors data that described synchronous phasor measuring device sends;

The emulating server of described WAMS, for obtaining described Dynamic Phasors data by Ethernet from described communication server, and analyzes the disturbance event of described Dynamic Phasors data identification power system.

3. the test system of the disturbed depth function of WAMS as claimed in claim 1, it is characterised in that the simulation main website of described WAMS, also includes:

Clockwork, for providing the standard time to the simulation main website of described WAMS.

4. the test system of the disturbed depth function of WAMS as claimed any one in claims 1 to 3, it is characterised in that the simulation main website of described WAMS, also includes:

The network printer, for the online simulation main website analysis result to described Dynamic Phasors data printing described WAMS.

5. the test system of the disturbed depth function of WAMS as claimed any one in claims 1 to 3, it is characterized in that, described default disturbance event includes electromotor and cuts machine event, circuit breaking event, line short event one of them or combination in any.

6. the method for testing of the disturbed depth function of a WAMS, it is characterised in that including:

By real-timedigital simulation unit simulation power system running status under default disturbance event;

Dynamic Phasors data by plant stand each in the power system that synchronous phasor measuring device collection is simulated;

Receive, by the simulation main website of WAMS, the Dynamic Phasors data that described synchronous phasor measuring device sends, and analyze described Dynamic Phasors data to identify the disturbance event of power system;

The analysis result of described Dynamic Phasors data is checked with described default disturbance event by the simulation main website of WAMS, determines the performance of the disturbed depth function of WAMS according to checked result.

7. the method for testing of the disturbed depth function of WAMS as claimed in claim 6, it is characterized in that, the Dynamic Phasors data that described synchronous phasor measuring device sends are received by the simulation main website of WAMS, and analyze described Dynamic Phasors data to identify the disturbance event of power system, including:

By the communication server in the simulation main website of WAMS, Ethernet is adopted to receive the Dynamic Phasors data that described synchronous phasor measuring device sends;

By the emulating server of WAMS in the simulation main website of WAMS, adopt Ethernet to obtain described Dynamic Phasors data from described communication server, and analyze described Dynamic Phasors data to identify the disturbance event of power system.

8. the method for testing of the disturbed depth function of WAMS as claimed in claim 6, it is characterised in that also include:

The standard time is provided to the simulation main website of described WAMS by clockwork.

9. the method for testing of the disturbed depth function of the WAMS as according to any one of claim 6 to 8, it is characterised in that also include:

The simulation main website analysis result to described Dynamic Phasors data of described WAMS is printed online by the network printer.

10. the method for testing of the disturbed depth function of the WAMS as according to any one of claim 6 to 8, it is characterised in that

Described default disturbance event includes electromotor and cuts machine event, circuit breaking event, line short event one of them or combination in any.