CN104932288A - Closed loop test system and test method for automatic device of rapid switching capacitor - Google Patents
Closed loop test system and test method for automatic device of rapid switching capacitor Download PDFInfo
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- CN104932288A CN104932288A CN201510381432.6A CN201510381432A CN104932288A CN 104932288 A CN104932288 A CN 104932288A CN 201510381432 A CN201510381432 A CN 201510381432A CN 104932288 A CN104932288 A CN 104932288A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims abstract description 7
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Abstract
The invention discloses a closed loop test system of a rapid switching capacitor automatic device, which comprises a simulation workstation for establishing a power grid model, a real-time digital simulator, an analog quantity output interface card, a digital quantity input interface card, a level isolation relay, a voltage amplifier, a switching capacitor automatic device, a background monitor, an Ethernet and a special debugging serial port line, wherein the simulation workstation is connected with the real-time digital simulator through the Ethernet, the real-time digital simulator outputs voltage analog quantity to the switching capacitor automatic device through the analog quantity output interface card and the voltage amplifier, the real-time digital simulator outputs switching state quantity to the switching capacitor automatic device through the digital quantity output interface card and the level isolation relay, the switching capacitor automatic device returns a switching action command to the real-time digital simulator through the digital quantity input interface card, the switching capacitor automatic device is connected with the background monitoring through a special debugging serial port line.
Description
Technical field
The present invention relates to electric system real-time digital closed test technology, more particularly, relate to a kind of closed loop test system and test method thereof of quick-switching capacitor aut.eq..
Background technology
In south electric network system, the website of each electric pressure is all configured with a large amount of reactive apparatus, and operative practice finds, even if under large load condition, also has the capacitor of part to be in stand-by state.If adopt aut.eq. automatically to drop into capacitor for subsequent use when system voltage reduces, then with less cost, the voltage stability of system can be improved; On control strategy, consider that capacitor is failure to actuate when the correct excision of system jam protection, drop into when protection or switch failure.Although AVC and VQC of current employing also can control the switching of capacitor, time scale cannot meet the requirement of quick-switching Capacitor banks temporarily.
For strengthening receiving end electrical network dynamic reactive supporting capacity further, improve Network Voltage Stability, selected part area power grid, as dropping into capacitor pilot fast, is installed capacitor switching aut.eq., is realized dropping into Capacitor banks fast after realizing the system failure.
Therefore, in order to check basic function strategy correctness and the response condition of aut.eq. under different faults operating mode, need to carry out quick-switching capacitor aut.eq. l-G simulation test.
Summary of the invention
The object of the invention is to: closed loop test system and test method thereof that a kind of quick-switching capacitor aut.eq. is provided, be convenient to carry out different faults Type Test.
To achieve these goals, the invention provides a kind of closed loop test system of quick-switching capacitor aut.eq., comprise the simulation work station setting up electric network model, Real Time Digital Simulator, analog output interface circuit card, digital-quantity output interface card, digital-quantity input interface card, level disconnecting relay, voltage amplifier, switched capacitor aut.eq., background monitoring, Ethernet, Special debugging Serial Port Line, simulation work station is connected with Real Time Digital Simulator by Ethernet, Real Time Digital Simulator by analog output interface circuit card through voltage amplifier to switched capacitor aut.eq. output voltage analog quantity, Real Time Digital Simulator by digital-quantity output interface card through level disconnecting relay to switched capacitor aut.eq. output switch quantity of state, switch motion order is back to Real Time Digital Simulator by digital-quantity input interface card by switched capacitor aut.eq., switched capacitor aut.eq. is connected with background monitoring by Special debugging Serial Port Line.
As a modification of the present invention, described Real Time Digital Simulator is used for setting up alterating and direct current network data realistic model, simulates actual electric network except switched capacitor automation equipment, and by analog quantity and digital quantity I/O to switched capacitor aut.eq..
As a modification of the present invention, described alterating and direct current network data realistic model is set up according to electrical network primary equipment practical structures and parameter, comprising: the generator of AC system, transformer, alternating current circuit, isolating switch, circuit high resistance, equivalent power-supply device; The converter valve group of straight-flow system, converter power transformer, alternating current filter, DC filter, DC power transmission line, ground electrode circuit, isolating switch, isolated switchgear; AC system is electrically connected by change of current change and straight-flow system at change of current bus place.
As a modification of the present invention, described Real Time Digital Simulator exports capacitor installation station 220kV bus three-phase voltage in AC system to switched capacitor aut.eq. by analog output interface circuit card.
As a modification of the present invention, described Real Time Digital Simulator exports the Capacitor banks on off state hung on 10kV bus to switched capacitor aut.eq. by digital-quantity output interface card.
As a modification of the present invention, described switched capacitor aut.eq. determines whether opening-closing capacitor bank by three-phase voltage size, slippage and the Capacitor banks on off state judging Real Time Digital Simulator and send here, by digital-quantity input interface card will divide/combined floodgate order is back to Real Time Digital Simulator.
As a modification of the present invention, described background monitoring reads the action message of switched capacitor aut.eq. and records ripple for analysis of experiments.
Present invention also offers a kind of closed test method of quick-switching capacitor aut.eq.:
(1) trouble spot arranges and is respectively: switched capacitor aut.eq. installs website 220kV outlet, the outlet of installation station upper level 500kV website, electrical distance more than the outlet of 300km 500kV website;
(2) fault type arranges and is respectively: single-phase transient earthing fault, single-phase continuous earth fault, singlephase earth fault generation switch failure, alternate earth fault, the tripping of alternate earth fault generation single-phase switch, three-phase ground fault, the tripping of three-phase ground fault generation single-phase switch, three-phase permanent earth fault, single-phase earthing develop into two fault, straight-flow system generation bipolar lockings etc. indirectly;
(3) aut.eq. mounting points electrical distance nearest generating plant generation oscillation of power;
(4) by the fault verification that combination is above-mentioned, quick-switching capacitor aut.eq. test two dimensional fault matrix is formed.
Compared with prior art, the present invention adopts Real Time Digital Simulator to be connected with quick-switching capacitor aut.eq. by interface hardware equipment, form quick-switching capacitor aut.eq. closed loop test system, be convenient to carry out different faults Type Test, after fault, pilot system conveniently can return to and normally run initial state.Flexible design of the present invention, dependable performance, convenient and practical.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, structure of the present invention and Advantageous Effects thereof are described in detail.
Fig. 1 is the structural representation of closed loop test system of the present invention.
Fig. 2 is that schematic diagram built by the digital model of closed loop test system of the present invention.
Embodiment
In order to make goal of the invention of the present invention, technical scheme and Advantageous Effects thereof more clear, below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.Should be understood that, the embodiment described in this instructions is only used to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1, the closed loop test system of quick-switching capacitor aut.eq. of the present invention comprises simulation work station 1, Real Time Digital Simulator 2, analog output interface circuit card 3, digital-quantity output interface card 4, digital-quantity input interface card 5, level disconnecting relay 6, voltage amplifier 7, switched capacitor aut.eq. 8, background monitoring 9, Ethernet 10, the Special debugging Serial Port Line 11 of setting up electric network model.Wherein, simulation work station 1 is connected with Real Time Digital Simulator 2 by Ethernet 10, Real Time Digital Simulator 2 by analog output interface circuit card 3 through voltage amplifier 7 to switched capacitor aut.eq. 8 output voltage analog quantity, Real Time Digital Simulator 2 by digital-quantity output interface card 4 through level disconnecting relay 6 to switched capacitor aut.eq. 8 output switch quantity of state, switch motion order is back to Real Time Digital Simulator 2 by digital-quantity input interface card 5 by switched capacitor aut.eq. 8, switched capacitor aut.eq. 8 is connected with background monitoring 9 by Special debugging Serial Port Line 11.In the present embodiment, Real Time Digital Simulator 2 is RTDS (Real Time DigitalSimulator) Real Time Digital Simulator.Real Time Digital Simulator 2, for setting up alterating and direct current network data realistic model, simulates actual electric network except switched capacitor automation equipment, and by analog quantity and digital quantity I/O to switched capacitor aut.eq. 8.
Alterating and direct current network data realistic model is set up according to electrical network primary equipment practical structures and parameter, digital model includes: the generator, transformer, alternating current circuit, isolating switch, circuit high resistance, equivalent power-supply device etc. of AC system, the converter valve group, converter power transformer, alternating current filter, DC filter, DC power transmission line, ground electrode circuit, isolating switch, isolated switchgear etc. of straight-flow system, AC system is electrically connected by change of current change and straight-flow system at change of current bus place.Real Time Digital Simulator 2 exports capacitor installation station 220kV bus three-phase voltage in AC system to switched capacitor aut.eq. 8 by analog output interface circuit card 3; Real Time Digital Simulator 2 exports the Capacitor banks on off state hung on 10kV bus to switched capacitor aut.eq. 8 by digital-quantity output interface card 4; Switched capacitor aut.eq. 8 by judging that three-phase voltage size, slippage and Capacitor banks on off state that Real Time Digital Simulator 2 is sent here determine whether opening-closing capacitor bank, by digital-quantity input interface card 5 will divide/combined floodgate order is back to Real Time Digital Simulator 2; Quick-switching capacitor aut.eq. pilot system, can read action message and the record ripple of switched capacitor aut.eq. 8, for analysis of experiments by background monitoring 9.
The closed test method of quick-switching capacitor aut.eq. of the present invention, comprises the steps: that (1) sets up quick-switching capacitor aut.eq. pilot system real-timedigital simulation model on simulation work station 1; (2) by netting twine, simulation work station 1 is connected with Real Time Digital Simulator 2; (3) by optical fiber, the computer card of Real Time Digital Simulator 2 is connected with analog output interface circuit card 3, with hardwire, analog output interface circuit card 3 is connected with voltage amplifier 7, with power lead, voltage amplifier 7 is connected with switched capacitor aut.eq. 8, exports the ac bus voltage of RTDS real-time operation to switched capacitor aut.eq. 8; (4) by optical fiber, the computer card of Real Time Digital Simulator 2 is connected with digital-quantity output interface card 4, with hardwire, digital-quantity output interface card 4 is connected with level disconnecting relay 6, with hardwire, level disconnecting relay 6 is connected with switched capacitor aut.eq. 8, exports Capacitor banks switch state to switched capacitor aut.eq. 8; (5) with hardwire, switched capacitor aut.eq. 8 is connected with digital-quantity input interface card 5, with optical fiber, the computer card of digital-quantity input interface card 5 with Real Time Digital Simulator 2 is connected, deciliter order of Capacitor banks switch is inputed to Real Time Digital Simulator 2; (6) with Special debugging Serial Port Line 11, switched capacitor aut.eq. 8 is connected with background monitoring 9, for reading the action message, failure wave-recording etc. of switched capacitor aut.eq. 8; (7) according to testing program, ffault matrix is set in digital simulation model, encoded number realistic model, and downloads to operation on Real Time Digital Simulator 2; (8) by operating real-time simulation operating software in simulation work station 1, DCO is carried out to quick-switching capacitor aut.eq. (8).
Above-mentioned quick-switching capacitor aut.eq. test two dimensional fault arranged in matrix process is: (1) trouble spot arranges and is respectively: switched capacitor aut.eq. installs website 220kV outlet, the outlet of installation station upper level 500kV website, electrical distance more than the outlet of 300km 500kV website; (2) fault type arranges and is respectively: single-phase transient earthing fault, single-phase continuous earth fault, singlephase earth fault generation switch failure, alternate earth fault, the tripping of alternate earth fault generation single-phase switch, three-phase ground fault, the tripping of three-phase ground fault generation single-phase switch, three-phase permanent earth fault, single-phase earthing develop into two fault, straight-flow system generation bipolar lockings etc. indirectly; (3) aut.eq. mounting points electrical distance nearest generating plant generation oscillation of power; (4) by combination above-mentioned (1), (2) bar fault verification, quick-switching capacitor aut.eq. test two dimensional fault matrix is formed.
Refer to Fig. 2, the voltage and current analog quantity of AC system is sent to voltage amplifier by digital simulator through analog output interface circuit card, and the analog signal input card being sent to switched capacitor aut.eq. after voltage amplifier amplifies according to setting proportional linearity carries out collection and calculates; The on off state of alternating current circuit is sent to level disconnecting relay by the digital-quantity output interface card of emulator, and the digital input card being sent to switched capacitor aut.eq. after the level isolation of level disconnecting relay carries out collection and calculates; After switched capacitor aut.eq. calculates the analog quantity gathered, digital quantity, by digital input interface board to digital simulator input switch action command.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also carry out suitable change and amendment to above-mentioned embodiment.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (9)
1. the closed loop test system of a quick-switching capacitor aut.eq., it is characterized in that, comprise the simulation work station setting up electric network model, Real Time Digital Simulator, analog output interface circuit card, digital-quantity output interface card, digital-quantity input interface card, level disconnecting relay, voltage amplifier, switched capacitor aut.eq., background monitoring, Ethernet, Special debugging Serial Port Line, simulation work station is connected with Real Time Digital Simulator by Ethernet, Real Time Digital Simulator by analog output interface circuit card through voltage amplifier to switched capacitor aut.eq. output voltage analog quantity, Real Time Digital Simulator by digital-quantity output interface card through level disconnecting relay to switched capacitor aut.eq. output switch quantity of state, switch motion order is back to Real Time Digital Simulator by digital-quantity input interface card by switched capacitor aut.eq., switched capacitor aut.eq. is connected with background monitoring by Special debugging Serial Port Line.
2. the closed loop test system of quick-switching capacitor aut.eq. according to claim 1, it is characterized in that, described Real Time Digital Simulator is used for setting up alterating and direct current network data realistic model, simulation actual electric network except switched capacitor automation equipment, and by analog quantity and digital quantity I/O to switched capacitor aut.eq..
3. the closed loop test system of quick-switching capacitor aut.eq. according to claim 2, it is characterized in that, described alterating and direct current network data realistic model is set up according to electrical network primary equipment practical structures and parameter, comprising: the generator of AC system, transformer, alternating current circuit, isolating switch, circuit high resistance, equivalent power-supply device; The converter valve group of straight-flow system, converter power transformer, alternating current filter, DC filter, DC power transmission line, ground electrode circuit, isolating switch, isolated switchgear; AC system is electrically connected by change of current change and straight-flow system at change of current bus place.
4. the closed loop test system of quick-switching capacitor aut.eq. according to claim 2, it is characterized in that, described Real Time Digital Simulator exports capacitor installation station 220kV bus three-phase voltage in AC system to switched capacitor aut.eq. by analog output interface circuit card.
5. the closed loop test system of quick-switching capacitor aut.eq. according to claim 2, it is characterized in that, described Real Time Digital Simulator exports the Capacitor banks on off state hung on 10kV bus to switched capacitor aut.eq. by digital-quantity output interface card.
6. the closed loop test system of quick-switching capacitor aut.eq. according to claim 2, it is characterized in that, described switched capacitor aut.eq. determines whether opening-closing capacitor bank by three-phase voltage size, slippage and the Capacitor banks on off state judging Real Time Digital Simulator and send here, by digital-quantity input interface card will divide/combined floodgate order is back to Real Time Digital Simulator.
7. the closed loop test system of quick-switching capacitor aut.eq. according to claim 6, is characterized in that, described background monitoring reads the action message of switched capacitor aut.eq. and records ripple for analysis of experiments.
8. a closed test method for quick-switching capacitor aut.eq., is characterized in that, comprise the steps:
(1) on simulation work station, set up quick-switching capacitor aut.eq. pilot system real-timedigital simulation model;
(2) by netting twine, simulation work station is connected with Real Time Digital Simulator;
(3) by optical fiber the computer card of Real Time Digital Simulator and analog output interface circuit linked and connect, with hardwire, analog output interface circuit card is connected with voltage amplifier, with power lead, voltage amplifier is connected with switched capacitor aut.eq., exports the ac bus voltage of real-time operation to switched capacitor aut.eq.;
(4) by optical fiber the computer card of Real Time Digital Simulator and digital-quantity output interface linked and connect, with hardwire, digital-quantity output interface card is connected with level disconnecting relay, with hardwire, level disconnecting relay is connected with switched capacitor aut.eq., exports Capacitor banks switch state to switched capacitor aut.eq.;
(5) with hardwire switched capacitor aut.eq. and digital-quantity input interface linked and connect, with optical fiber, digital-quantity input interface card is connected with the computer card of Real Time Digital Simulator, deciliter order of Capacitor banks switch is inputed to Real Time Digital Simulator;
(6) with Special debugging Serial Port Line, switched capacitor aut.eq. is connected with background monitoring, for reading the action message, failure wave-recording etc. of switched capacitor aut.eq.;
(7) according to testing program, ffault matrix is set in digital simulation model, encoded number realistic model, and downloads on Real Time Digital Simulator and run;
(8) by operating real-time simulation operating software in simulation work station, DCO is carried out to quick-switching capacitor aut.eq..
9. the closed test method of quick-switching capacitor aut.eq. according to claim 8, is characterized in that, described ffault matrix setting up procedure comprises:
(1) trouble spot arranges and is respectively: switched capacitor aut.eq. installs website 220kV outlet, the outlet of installation station upper level 500kV website, electrical distance more than the outlet of 300km 500kV website;
(2) fault type arranges and is respectively: single-phase transient earthing fault, single-phase continuous earth fault, singlephase earth fault generation switch failure, alternate earth fault, the tripping of alternate earth fault generation single-phase switch, three-phase ground fault, the tripping of three-phase ground fault generation single-phase switch, three-phase permanent earth fault, single-phase earthing develop into two fault, straight-flow system generation bipolar lockings etc. indirectly;
(3) aut.eq. mounting points electrical distance nearest generating plant generation oscillation of power;
(4) by the fault verification that combination is above-mentioned, quick-switching capacitor aut.eq. test two dimensional fault matrix is formed.
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