CN101980417B - 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 substation testing simulation 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 digital transformer substation Pilot project construction advances rapidly at home.Compare with traditional transformer station, digital transformer substation adopts unified communication standard 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 communication and control, again major transformation of Substation Automation System, represented from now on one period electric substation automation system developing direction.
Digital transformer substation is as the digitlization object take 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, the modernized transformer station of satisfy safety, stablize, reliable, economical operation requires.
Electronic mutual inductor and IEC61850 standard are after digital transformer substation is used, a lot of original problems (the routine transformer electromagnetism is saturated, secondary circuit electromagnetic interference, transmission pressure drop etc.) are very significantly improved, 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 had larger change.
Now widely used on the market is two kinds of testing apparatuss, and a kind of is the conventional tester with power amplifier, 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; to have increased an interface arrangement on the Microcomputer Protection test instrument basis of routine; electric current, the voltage analog information of the output of routine test instrument are inputed to protective device after converting light signal to, and these schemes only can be as the transiens testing scheme of digital transformer substation first stage of construction.
The test device for relay protection that uses at present also is not suitable with the needs of electric power digital; existing method of testing simple so that the function imperfection; can only do some simple Basic function testings; 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 affected 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; be not suitable with the needs of electric power digital for the test device for relay protection 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; namely 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 macro of researching and developing based on the IEC61850 standard, the allomeric function test request that satisfies the substation field test and check and accept.
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 a plurality of devices 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 that forms 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, the 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 the information exchanges such as the switch changed position of generation are crossed address card and returned desktop computer, 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 simultaneously a plurality of tested IED and transformer substation system.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 in real time that again tested IED action is on the impact of digital transformer substation system.In order to solve the cumbersome amount of calculation because adopting closed loop test to bring, the Software for 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 calculating section are on many CPU desktop computer in the software, resolved and be distributed to each pci card, calculating and Communication processing part is finished by DSP on pci card in real time, give full play to so the powerful computing capability of many CPU desktop computer, avoided again the poor shortcoming of its real-time; Because in real time processing is to be finished by the DSP on the every pci card, therefore increases measurement system interface, namely expands pci card, the real-time of system is processed and is not affected, and Design of System Software as shown in Figure 2.The process that the software closed loop is calculated 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 again the analysis of system mathematic model according to its data, finish the closed loop of model and calculate in real time, and simultaneously the calculation result packing is generated the data output of IEC61850-9 or FT3 form.
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, greatly improves electric power system personnel's technical merit and power system device production development personnel's research level.
Description of drawings
Fig. 1 is system global structure example block diagram of the present invention;
Fig. 2 is 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; 61850 communication cards of the 3rd, PCI; The 4th, a plurality of fiber ports; The DA small-signal card of the 5th, 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 communication card, do not connect such 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) by the parameter characteristic of on-the-spot tested IED, goose and the smv parameter of communication is set.
The user is parameters directly, also can be by reading in icd configuration file Lookup protocol.To the goose parameter, device also can be directly from tested IED intercepting goose message, automatically configuration.
(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 arranges primary system parameter and system emulation parameter.The button of clicking main interface right side central arranges frame with all parameters and activates, and successively each parameter is arranged;
The primary system parameter arranges:---all primary system relevant parameters are arranged: 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 arranges---all system emulation relevant parameters arranged: load percentage, transition resistance, fault type, the position of fault, Conversion fault 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 the information that the relevant devices being tested such as voltage and current signal of electric current, output of both sides voltage transformer voltage and current flowing instrument transformer need.
(5) these information generate IEC61850-9 or FT3 data through packing, 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 exported first normal information, 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 algorithm of electrical network, the condition of resolving the differential equation is namely decided by boundary condition and the both sides killer switch on off operating mode of fault, by the correct analogue system transient process of differential equation energy of resolving;
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 really operation, the failure condition of practical power systems;
After device being tested receives fault message, fault is judged to select correct operation, testing software by Real-time Simulation Technology within the time interval, the jumping that gathers tested system closes signal, determine that the jumping of both sides circuit breaker closes state, and judges the lower for the moment system mode in step according to new topological structure;
The electric power system of tested protective device and institute's emulation consists of 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; information when comprising normal, fault and the action message of device being tested etc., save 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 system operate time to the requirement of protective device; Thereby properties 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 substation testing simulation 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 a plurality of devices 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 that forms 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, simulation calculation, man-machine interaction process; 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 the switch changed position information exchange of generation is crossed address card and returned desktop computer, and the electro-magnetic transient that participates in simulation model calculates, and has realized dynamic closed loop test.
2. a kind of digital substation testing simulation 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 calculating section are on many CPU desktop computer in the software, resolved and be distributed to each pci card, calculating and Communication processing part is finished by DSP on pci card in real time, the process that the software closed loop is calculated is, by computer control system in the regular hour step-length by external digital amount interface analysis goose information, obtain the external information amount, carry out again the analysis of system mathematic model according to its data, finish the closed loop of model and calculate in real time, and simultaneously the calculation result packing is generated the data output of IEC61850-9 and FT3 form.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102403788B (en) * | 2011-04-28 | 2014-03-26 | 广东省电力调度中心 | Test system applicable to southern power grid communication guaranteeing system |
| CN102820703B (en) * | 2011-06-09 | 2014-08-27 | 国家电网公司 | Method and system for determining switch deflection in real time |
| 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 |
| 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 |
| CN103176084B (en) * | 2013-03-07 | 2014-04-16 | 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 |
| 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 |
| 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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| JP2010226906A (en) * | 2009-03-25 | 2010-10-07 | Tokyo Electric Power Co Inc:The | Power system analytic model evaluating device |
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| CN1929223A (en) * | 2005-09-07 | 2007-03-14 | 上海东捷建设(集团)有限公司 | Integrated automation converting station debugging apparatus |
| CN101158847A (en) * | 2007-08-23 | 2008-04-09 | 济南钢铁集团总公司 | Electric power substation software emulation platform building method and no power off upgrading improved method |
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