CN101980417A - Digital substation testing simulation method - Google Patents
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Abstract
The invention discloses digital substation testing simulation method. In the method, an IEC61850 standard digital dynamic testing simulation technology-based substation system testing method is adopted, namely a substation simulation model is established, and the actual motion is simulated for system closed-loop testing so as to detect the dynamic characteristics of a device to be detected. For the integrated design of the system, a frame structure consisting of a PCI board card and a multi-CPU desktop is adopted, and a system simulation testing device consisting of the multi-CPU desktop, a PCI bus-based IEC61850 communication card and a small signal and switching value interface card is established, wherein the multi-CPU desktop is a system control platform, and is used for performing processing such as drawing, simulation computation, man-machine interaction and the like; the PCI bus-based IEC61850 communication card provides a plurality of optical Ethernet ports to connect a plurality of protective devices and control equipment; and the protective devices receive MU data of the communication card, and the generated information such as switch position change and the like is returned to the desktop through the communication card to participate in electromagnetism transient calculation for the simulation model.
Description
Technical field
The present invention relates to a kind of digital transformer substation test emulation method, belong to the power automation technical field.
Background technology
In recent years, along with IEC 61850 standards at home apply and the research of digital transformer substation correlation technique progressively deeply, the construction of digital transformer substation pilot advances rapidly at home.Compare with traditional transformer station, digital transformer substation adopts the uniform communication standards system, description to transformer station's internal information model and communication process is unified and standard, information digitalization, modeling standardization, transmission networkization have become the key character of digital transformer station secondary system, it has overturned the pattern of traditional transformer station message transmission and control, be major transformation again of automation of transformation substations technology, represented from now on one period electric substation automation system developing direction.
Digital transformer substation is to be the digitlization object with first and second system of transformer station, digital information is carried out unified Modeling, physical equipment is virtual, adopt standardized network communication platform, realize information sharing and interoperability, satisfy safety, stable, reliable, modernized transformer station that economical operation requires.
Electronic mutual inductor and IEC61850 standard are after digital transformer substation is used, a lot of original problems (conventional instrument transformer electromagnetism is saturated, secondary circuit electromagnetic interference, transmission pressure drop etc.) obtain very big improvement, but also bring new problem simultaneously, the test event of digital transformer station secondary system relevant device, method of testing, means of testing etc. have all had bigger change.
Widely used on the market now is two kinds of testing apparatuss, and a kind of is the tester of the band power amplifier of routine, obviously can not satisfy the test request of digital transformer substation, does not meet the IEC61850 standard; Another kind is the numerical protection testing apparatus of output IEC61850-9 form; still the follow conventional lines thinking of transformer station test of the testing apparatus that provides; only cancelled original power amplifying device; be on the Microcomputer Protection test instrument basis of routine, to have increased an interface arrangement; electric current, the voltage analog information translation of the output of routine test instrument are inputed to protective device after becoming light signal, and these schemes only can be as the transiens testing scheme of digital transformer substation first stage of construction.
The present test device for relay protection that uses is the needs of incompatibility electric power digitalization also; existing method of testing simply make the function imperfection; can only do some simple basic function tests; can not carry out system's closed cycle simulation test and to the test of the allomeric function of power system device; because the extensive use of digital transformer substation; method of testing and functional limitation seriously limit and have hindered field adjustable and examination; thereby influenced the safe and stable operation of digital transformer substation operation and electric power system, can not satisfy the needs of power system development.
Summary of the invention
The objective of the invention is; needs for the test device for relay protection incompatibility electric power digitalization that solves present use; simple and the incomplete defective of function of existing method of testing; the present invention proposes the brand-new test emulation method of a kind of digital transformer station secondary system; promptly based on the transformer substation system method of testing of the digital dynamic test emulation technology of IEC61850 standard; purpose is the digital transformer substation IED test macros of research and development based on the IEC61850 standard, satisfies the allomeric function test request of transformer station's on-the-spot test and examination.
Technical scheme of the present invention is, the present invention adopts the transformer substation system method of testing based on the digital dynamic test emulation technology of IEC61850 standard, and method of testing comprises: set up the substation simulation model, simulate its actual motion, carry out system's closed loop test, detect the dynamic characteristic of tested device.For guaranteeing simultaneously multiple arrangement to be carried out system-level emulation testing, overall system design has adopted the frame structure of PCI integrated circuit board and many CPU desktop computer, sets up the system emulation testing apparatus of forming by many CPU desktop computer, based on the IEC61850 communication card of pci bus and small-signal and switching value interface card.
Many CPU desktop computer is the platform of system control, draws, processing such as simulation calculation, man-machine interaction.Communication card based on pci bus provides a plurality of fiber optic Ethernet ports to link to each other with a plurality of protective devices and control appliance.Protective device is accepted the MU data of address card, and information such as the switch changed position of generation are returned desktop computer by address card, and the electro-magnetic transient that participates in simulation model calculates, and has realized dynamic closed loop test.
What 61850 communication cards and small-signal integrated circuit board and many CPU compunication were adopted is pci bus interface, and pci bus can provide high data transfer rate (132MB/s).Pci bus and CPU are irrelevant, and be also irrelevant with clock frequency, applicable to various platforms, supports multiprocessor and concurrent work.Pci bus also has good autgmentability, by the PCI-PCI bridge circuit, can allow expansion.Provide enough pci bus slots as long as calculate function, 61850 communication cards and small-signal card just can be expanded.
The present invention provides good hardware foundation for testing a plurality of tested IED and transformer substation system simultaneously.Communication interface and small-signal can expand arbitrarily; The real-time calculating of system is distributed on each integrated circuit board, and test macro can greatly not increase amount of calculation because of the increase of light mouth and small-signal.
The present invention has realized the real-time closed-loop test to tested device, this real-time closed-loop test both can detect the dynamic characteristic of tested device (IED) in the digital transformer substation system of actual complex, can reflect the influence of tested IED action to digital transformer substation system again in real time.In order to solve the cumbersome amount of calculation because of adopting closed loop test to bring, the software design combined with hardware platform of system carries out new design.
The present invention is finished by testing software the real-time calculating that system carries out closed loop test, the decomposition of system mathematic model and data computation part is on many CPU desktop computer in the software, resolved and be distributed to each pci card, calculating and communication processing section are finished by DSP on pci card in real time, give full play to many CPU desktop computer powerful computing ability like this, avoided the shortcoming of its real-time difference again; Owing to handle in real time is to be finished by the DSP on the every pci card, therefore increases measurement system interface, promptly expands pci card, and the real-time of system is handled and is not affected, and Design of System Software as shown in Figure 2.Software closed loop calculation process is, in the regular hour step-length, (be 20us to the maximum) by external digital amount interface analysis goose information by computer control system, obtain the external information amount, carry out the analysis of system mathematic model again according to its data, finish the closed loop of model and calculate in real time, and will resolve the data output that the result packs and generates IEC61850-9 or FT3 form simultaneously.
Test macro of the present invention set up in the digital transformer substation each once, the Mathematical Modeling of secondary device, the user can be according to on-the-spot actual needs, tested primary system model is set up in combination, tested a plurality of IED carry out real-time emulation testing in this primary system model, true its actual dynamic characteristic of reflection, realize true digital transformer substation digital dynamic analog functuion, i.e. emulation testing.
Each once in the digital transformer substation, the Mathematical Modeling of secondary device is for the user provides powerful basis of software to the overall dynamics test of transformer station, makes the transformer substation system method of testing become possibility.
The present invention's beneficial effect compared with the prior art is, the present invention has changed the pattern of former customizations checkout equipment, has realized the real-time simulation function, and can be simultaneously to a plurality of IED tests, real simulated field transformer station state provides a general digital transformer substation test platform.The present invention can dynamically simulate the transient characterisitics of practical power systems in real time, the actual motion environment of real-time simulation tested device, particularly with the real-time simulation Test Application in on-the-spot test, improved on-the-spot testing level to protective device; The present invention can detect a plurality of tested IED simultaneously according to customer requirements, checks influencing each other under its complicated presence states, can pinpoint the problems in advance.Simulation software is simulated field truly, and protective device is carried out system level testing, improves electric power system personnel's technical merit and power system device production developer's research level greatly.
Description of drawings
Fig. 1 is a system global structure example block diagram of the present invention;
Fig. 2 is a systems soft ware schematic diagram of the present invention;
Picture in picture number expression: the 1st, many CPU desktop computer; The 2nd, the desktop computer internal pci bus; The 3rd, 61850 communication cards of PCI; The 4th, a plurality of fiber ports; The 5th, the DA small-signal card of PCI; The 6th, fiber optic Ethernet; The 7th, protective device equipment; The 8th, simulation small-signal and switching value interface.
Embodiment
The specific embodiment of the present invention as shown in Figure 1.
Open computer, enter the test emulation software systems; Correct with tested a plurality of IED wiring; " real-time simulation " project of selection.
The system testing step is as follows:
(1) computer control system is at first carried out self check:
Automatically search the connection status of bottom address card, do not connect as address card and PC, or its card has hardware fault, then computer system can not be carried out hardware operation, and the prompt system mistake.
(2), the goose and the smv parameter of communication is set by the parameter characteristic of on-the-spot tested IED.
The user can directly be provided with parameter, also can be provided with automatically by reading in the icd configuration file.To the goose parameter, device also can be directly from tested IED intercepting goose message, configuration automatically.
(3) carry out the parameter setting of simulation software according to the parameter of adjusting in the tested protective relaying device, tester simulation primary system docks with protective device.
" parameter setting area "---the requirement according to protective device is provided with primary system parameter and system emulation parameter.The button of clicking main interface right side central is provided with frame with all parameters and activates, and successively each parameter is provided with;
The primary system parameter is provided with:---all primary system relevant parameters are provided with: CT no-load voltage ratio, electric pressure, system frequency (Hz), total track length, positive sequence impedance, positive sequence impedance angle, zero sequence impedance, zero sequence impedance angle;
The system emulation parameter is provided with---all system emulation relevant parameters is provided with: load percentage, transition resistance, fault type, the position of fault, fault change-over time;
(4) press the " RUN " button, system enters normal operating condition, computer system is carried out real-time simulation according to the parameter of the structure of the topology of system and setting and is calculated, and all differential equations are resolved and further calculate both sides voltage transformer voltage and flow through the information that the relevant devices being tested such as voltage and current signal of electric current, output of current transformer need.
(5) these information via packings generate IEC61850-9 or FT3 data, download in each address card, export to device being tested or system; System accepts the goose information that the tested device in the address card sends, and analyzes its switching value and changes.
(6) test process
The test emulation device is the output normal information earlier, is in normal operating condition, is equivalent to the normal operation of device being tested under the electric power system actual conditions;
By " fault " button, system parameters changes, this is that the electric power system topological structure that simulated changes, computer resolves the differential equation according to the model and the algorithm of electrical network, the condition of resolving the differential equation is promptly decided by the boundary condition and the both sides killer switch on off operating mode of fault, by the correct analogue system transient process of resolving of differential equation energy;
Parameter during output system fault under output system is nonserviceabled is given tested system or device, and parameter comprises fault current, voltage and aperiodic component etc., can react operation, the failure condition of practical power systems really;
After device being tested receives fault message, fault judged select correct operation, testing software by the real-time simulation technology in the time interval, the jumping of gathering tested system closes signal, determine that the jumping of both sides circuit breaker closes state, and judges down the system mode in step for the moment according to new topological structure;
The electric power system of tested protective device and institute's emulation constitutes closed loop, comes tripping or the killer switch of the system of closing by its action behavior.Thereby simulation algorithm carries out the real-time resolving work of system according to the topological structure that the tripping of killer switch or the state that closes obtain system just, simulation process send data while calculating, therefore the voltage current waveform that observes is with synchronous, the dynamic process of the realistic system of process of the test of this quick real-time resolving and real closed loop;
(7) tested protective relaying device sends actuating signal; PC receives tested protective device feedack, and is presented on the interface, and simultaneity factor provides test report; the information when comprising normal, fault and the action message of device being tested etc. are preserved data and waveform.Can so just can test out protective relaying device regular event under the various failure conditions of primary system of simulation, and every defencive function running order of protective device and satisfy the requirement of system to protective device operate time; Thereby the every performance and the accuracy of action of checking protective relaying device.
(8) stop output, by " stopping " button, test macro enters the wait running status.
Claims (2)
1. digital transformer substation test emulation method, it is characterized in that, described method adopts the transformer substation system method of testing based on the digital dynamic test emulation technology of IEC61850 standard, described method of testing comprises: set up the substation simulation model, simulate its actual motion, carry out system's closed loop test, detect the dynamic characteristic of tested device; For guaranteeing simultaneously multiple arrangement to be carried out system-level emulation testing, overall system design has adopted the frame structure of PCI integrated circuit board and many CPU desktop computer, has set up the system emulation testing apparatus of forming by many CPU desktop computer, based on the IEC61850 communication card of pci bus and small-signal and switching value interface card; Many CPU desktop computer is the platform of system control, draws, processing such as simulation calculation, man-machine interaction; Communication card based on pci bus provides a plurality of fiber optic Ethernet ports to link to each other with a plurality of protective devices and control appliance; Protective device is accepted the MU data of address card, and information such as the switch changed position of generation are returned desktop computer by address card, and the electro-magnetic transient that participates in simulation model calculates, and has realized dynamic closed loop test.
2. a kind of digital transformer substation test emulation method according to claim 1, it is characterized in that, described method is finished by testing software the real-time calculating that system carries out closed loop test, the decomposition of system mathematic model and data computation part is on many CPU desktop computer in the software, resolved and be distributed to each pci card, calculating and communication processing section are finished by DSP on pci card in real time, software closed loop calculation process is, in the regular hour step-length, (be 20us to the maximum) by external digital amount interface analysis goose information by computer control system, obtain the external information amount, carry out the analysis of system mathematic model again according to its data, finish the closed loop of model and calculate in real time, and will resolve the data output that the result packs and generates IEC61850-9 and FT3 form simultaneously.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102403788A (en) * | 2011-04-28 | 2012-04-04 | 广东省电力调度中心 | Test system applicable to southern power grid communication guaranteeing system |
| CN102759692A (en) * | 2012-07-24 | 2012-10-31 | 广州供电局有限公司 | Simulation method for detecting local discharge of switch cabinet based on virtual reality technology |
| CN102820703A (en) * | 2011-06-09 | 2012-12-12 | 北京市电力公司 | Method and system for determining switch deflection in real time |
| CN103176084A (en) * | 2013-03-07 | 2013-06-26 | 江苏省电力公司电力科学研究院 | Intelligent substation simulation system in panoramic replace mode and integration testing method for intelligent substation simulation system |
| CN103185848A (en) * | 2012-07-12 | 2013-07-03 | 深圳市康必达控制技术有限公司 | Practical simulation test system for full-station system of digital intelligent transformer substation |
| CN104378413A (en) * | 2014-06-27 | 2015-02-25 | 许继电气股份有限公司 | Data transmission method for simulation system of intelligent substation |
| CN105891637A (en) * | 2016-04-14 | 2016-08-24 | 云南电网有限责任公司电力科学研究院 | Intelligent substation secondary device testing method and intelligent substation secondary device testing system |
| CN106204326A (en) * | 2016-07-11 | 2016-12-07 | 国网浙江省电力公司杭州供电公司 | A kind of distribution terminal IED equipment detection method for distribution system |
| CN106407492A (en) * | 2016-02-03 | 2017-02-15 | 上海交通大学 | Micro-grid real-time simulation method for processing multi-break switches of power systems |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102403788A (en) * | 2011-04-28 | 2012-04-04 | 广东省电力调度中心 | Test system applicable to southern power grid communication guaranteeing system |
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| CN102820703A (en) * | 2011-06-09 | 2012-12-12 | 北京市电力公司 | Method and system for determining switch deflection in real time |
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| CN103185848B (en) * | 2012-07-12 | 2016-12-28 | 深圳市康必达控制技术有限公司 | The practical emulation test system of system of entirely standing for digital intelligent transformer station |
| CN103185848A (en) * | 2012-07-12 | 2013-07-03 | 深圳市康必达控制技术有限公司 | Practical simulation test system for full-station system of digital intelligent transformer substation |
| CN102759692A (en) * | 2012-07-24 | 2012-10-31 | 广州供电局有限公司 | Simulation method for detecting local discharge of switch cabinet based on virtual reality technology |
| CN102759692B (en) * | 2012-07-24 | 2014-12-10 | 广州供电局有限公司 | Simulation method for detecting local discharge of switch cabinet based on virtual reality technology |
| CN103176084A (en) * | 2013-03-07 | 2013-06-26 | 江苏省电力公司电力科学研究院 | Intelligent substation simulation system in panoramic replace mode and integration testing method for intelligent substation simulation system |
| CN104378413A (en) * | 2014-06-27 | 2015-02-25 | 许继电气股份有限公司 | Data transmission method for simulation system of intelligent substation |
| CN104378413B (en) * | 2014-06-27 | 2018-04-24 | 许继电气股份有限公司 | A kind of intelligent substation simulation system data transmission method |
| CN106407492A (en) * | 2016-02-03 | 2017-02-15 | 上海交通大学 | Micro-grid real-time simulation method for processing multi-break switches of power systems |
| CN105891637A (en) * | 2016-04-14 | 2016-08-24 | 云南电网有限责任公司电力科学研究院 | Intelligent substation secondary device testing method and intelligent substation secondary device testing system |
| CN106204326A (en) * | 2016-07-11 | 2016-12-07 | 国网浙江省电力公司杭州供电公司 | A kind of distribution terminal IED equipment detection method for distribution system |
| CN106204326B (en) * | 2016-07-11 | 2019-12-31 | 国网浙江省电力公司杭州供电公司 | Power distribution terminal IED equipment detection method for power distribution system |
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Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121206 |
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Effective date of registration: 20121206 Address after: 330000 No. 88 min Qiang Road, private science and Technology Park, Jiangxi, Nanchang Applicant after: Jiangxi Electric Power Science Academy Applicant after: State Grid Corporation of China Address before: 330000 No. 88 min Qiang Road, private science and Technology Park, Jiangxi, Nanchang Applicant before: Jiangxi Electric Power Science Academy |
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Effective date of registration: 20180628 Address after: 330096 No. 88, min Qiang Road, private science and Technology Park, Nanchang, Jiangxi Co-patentee after: State Grid Corporation of China Patentee after: Power Science Research Institute of Jiangxi Electric Power Co., Ltd. Address before: 330000 No. 88, min Qiang Road, private science and Technology Park, Nanchang, Jiangxi Co-patentee before: State Grid Corporation of China Patentee before: Jiangxi Electric Power Science Academy |