CN109687437A - A kind of electrical simulation method of the exchange energy-consuming device of flexible DC transmission - Google Patents
A kind of electrical simulation method of the exchange energy-consuming device of flexible DC transmission Download PDFInfo
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- CN109687437A CN109687437A CN201811553134.0A CN201811553134A CN109687437A CN 109687437 A CN109687437 A CN 109687437A CN 201811553134 A CN201811553134 A CN 201811553134A CN 109687437 A CN109687437 A CN 109687437A
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- consuming device
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- thyristor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Abstract
A kind of electrical simulation method of the exchange energy-consuming device of flexible DC transmission is disclosed, method is the following steps are included: obtain exchange energy-consuming device main wiring diagram and power equipment parameter；Component-level model foundation is carried out based on the power equipment；Exchange energy-consuming device system emulation circuit model is established based on the main wiring diagram；Voltage and or current detection unit is placed at one or more nodes in the power equipment；Change exchange energy-consuming device operating status and fault condition, voltage and or current detection unit obtains voltage and current data.
Description
Technical field
The invention belongs to Simulating technique in Electric Power System field, the exchange energy-consuming device of especially a kind of flexible DC transmission
Electrical simulation method.
Background technique
It is especially a kind of for studying the exchange of flexible DC transmission engineering the present invention relates to electric system simulation calculating field
The method of energy-consuming device operation and fault characteristic.Flexible DC transmission is the important equipment for constructing smart grid, with traditional approach
It compares, has in terms of island power supply, the capacity-increasing transformation of urban power distribution network, AC system interconnection, large-scale wind power field
There is stronger technical advantage, can be applicable to such as marine wind electric field access, distributed generation resource access, long-distance and large-capacity power transmission and different
The fields such as step networking.Renewable energy (wind energy, solar energy etc.) can be accessed power grid and carried out remote by flexible DC transmission engineering
Distance Transmission, the country's higher soft straight engineering of voltage class generallys use bipolar connection plan at present, has bipolar operation and list
Extremely independently operated ability is equivalent to two independent looped networks, and after a pole is broken down, by pole control system, another pole is in equipment
Through-current capability can turn tape jam pole power in the case where allowing.When transmission system generation isolated island sending end monopole locking or receiving end are tight
When weight failure, will lead to renewable energy source power can not be sent outside, can be caused route and equipment damage when serious, be caused tremendous economic
Loss and security risk.In order to cope with the situation that renewable energy function can not be sent outside, a kind of newest solution is to pass through
The energy that high-power resistance is quickly put into sending end AC system by power grid aggregation by power electronic devices carries out on-site elimination, should
Rapidly, feasibility is strong for scheme response, highly-safe, has been installed within as in the soft straight demonstration project of Zhangbei County ± 500kV.However,
It obtains studying in detail not yet and accurate in the operation of the exchange energy-consuming device of soft straight power transmission engineering and fault characteristic due to applying
Calculating, which can't put into operation, and also can not be to the monitoring of its operational process and maintenance scheme system
It is fixed, therefore need to propose a kind of electrical simulation method of flexible DC transmission engineering exchange energy-consuming device.
PSCAD is current one of most widely used the Summary of Power System Simulation Software both at home and abroad, can be used for handing over
Flow network, route, cable, load module, Insulation Coordination, D.C. high voltage transmission and flexible direct current system (FACTS) control system
Design, the simulation calculation in the fields such as lightning stroke, failure and switching.The electrical characteristic of soft straight power transmission engineering exchange energy-consuming device
Emulation is related to route, load module, power electronic control system, and failure and switching emulation etc. have centainly
Complexity；The electrical characteristic simulation study of energy-consuming device is the theoretical direction and strategy that energy-consuming device is operated normally, safeguards, monitored
Foundation is formulated, energy-consuming device operation and the proposition of fault characteristic emulation mode have very strong practical significance and engineering value.This
Outside, although each class model is largely applied in various simulation calculations, soft straight power transmission engineering exchanges energy-consuming device itself
It is a things newly proposing, complicated, therefore soft straight power transmission engineering exchanges the operation of energy-consuming device and the emulation of fault characteristic
Calculation method is not yet suggested.
Disclosed above- mentioned information are used only for enhancing the understanding to background of the present invention in the background section, it is thus possible to
Information comprising not constituting the prior art known to a person of ordinary skill in the art in home.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention proposes a kind of electricity of the exchange energy-consuming device of flexible DC transmission
Gas emulation mode is formed the emulation mode of energy-consuming device system simulation model by the emulation equivalent model of each physical unit, should
Method simple and flexible, it is as a result scientific accurate, simple and clear, for exchange the operation of energy-consuming device, maintenance, monitoring policy system
It is fixed, flexible DC transmission engineering safety and stability are improved, shortens the equipment breakdown discovery period with significant practical significance.
The purpose of the present invention is being achieved by the following technical programs, a kind of exchange energy-consuming device of flexible DC transmission
Electrical simulation method the following steps are included:
In first step, exchange energy-consuming device main wiring diagram and power equipment parameter are obtained；
In second step, component-level model foundation is carried out based on the power equipment；
In third step, exchange energy-consuming device system emulation circuit model is established based on the main wiring diagram；
It is single that voltage and or current detection is placed in four steps, at one or more nodes in the power equipment
Member；
In 5th step, changes exchange energy-consuming device operating status and fault condition, voltage and or current detection unit obtain
Obtain voltage and current data.
In the method, in first step, exchange energy-consuming device includes line switching equipment, arrester, mutual induction of voltage
Device and/or current transformer, multiple thyristor valves and energy consumption resistor, the main wiring diagram are that line switching equipment is mutual via voltage
Sensor and/or current transformer connect multiple thyristor valves and energy consumption resistor, wherein energy consumption resistor and thyristor valve tandem are one
Group, multiple groups join end to end, arrester parallel line switchgear, and power equipment parameter includes the fracture electricity of line switching equipment
Hold, the equalizing resistance of the nonlinear resistance U-I curve and entrance capacitance of arrester, thyristor valve, damping resistance, damping capacitor,
Turn on thyristors and the entrance capacitance for turning off resistance, the resistance value of energy consumption resistor, voltage transformer and/or current transformer.
In the method, line switching equipment includes disconnecting switch and breaker.
In the method, in second step, the thyristor valve is modeled as damping capacitor Cd/N series damping resistor NRd
In parallel with the thyristor of a pair of of reverse parallel connection respectively afterwards and equalizing resistance Ra is in parallel, and wherein N is number.
In the method, in second step, the thyristor valve control system in the thyristor valve of modeling include phaselocked loop,
Interpolation pulse generator, trigger switch and Trigger Angle.
In the method, in second step, line switching equipment modeling is at breaking capacitance shunt trip breaker module.
In the method, in second step, the arrester of modeling includes the capacitor and ZNO module of ground connection.
In the method, in third step, energy-consuming device system emulation circuit model is exchanged as line switching equipment warp
Multiple thyristor valves and energy consumption resistor, three alternate thyristor valves and energy consumption are connected by voltage transformer and/or current transformer
The connection of △ shape realizes quick-switching response by cut-offfing for thyristor valve.
In the method, the phase of route line voltage is extracted using phase-locked loop module and generates 6 pulse zig-zags；So
The zig-zag that input phaselocked loop generates at the high level end of interpolation pulse generator afterwards inputs Trigger Angle number in low level end
Value generates 6 pulse triggering signals；Trigger signal is applied to thyristor gate leve end and controls cut-offfing for thyristor.
In the method, in the 5th step, changes exchange energy-consuming device operating status and fault condition obtains voltage wave
Shape figure, disconnecting switch and breaker are completely in closure or on state, and thyristor valve is off or by triggering and conducting shape
State is based on trigger signal waveform, with the voltage and electricity on voltmeter and ammeter monitoring route and on energy consumption resistor, thyristor valve
Flow waveform diagram.
In the method, voltage and or current detection unit is voltage sensor and/or current sensor.
Compared to the prior art, the invention has the following advantages that
The present invention carries out component-level model building to the power equipment in energy-consuming device according to device model parameter；Then
According to actual control principle, using the modules such as phaselocked loop, interpolation pulse generator to thyristor Control System Imitation model into
Row building；Then whole energy-consuming device circuit system is built, monitors the electric signal of key equipment node, and utilize sequential logic
Module emulates switch switching operation and fault, exchanges energy-consuming device under normal condition and fault condition to study
Electrical characteristic, to provide theoretical foundation to exchange operation, maintenance, the monitoring of energy-consuming device.
Detailed description of the invention
By reading the detailed description in hereafter preferred embodiment, various other advantages and benefits of the present invention
It will become apparent to those of ordinary skill in the art.Figure of description only for the purpose of illustrating preferred embodiments,
And it is not to be construed as limiting the invention.It should be evident that drawings discussed below is only some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.And throughout the drawings, identical component is presented with like reference characters.
In the accompanying drawings:
Fig. 1 is the electrical simulation method of the exchange energy-consuming device of flexible DC transmission according to an embodiment of the invention
Step schematic diagram；
Fig. 2 is the electrical simulation side of the exchange energy-consuming device according to an embodiment of the invention for implementing flexible DC transmission
The circuit interconnect pattern of method；
Fig. 3 (a) to Fig. 3 (c) is the exchange energy-consuming device according to an embodiment of the invention for implementing flexible DC transmission
Electrical simulation method thyristor valve actual circuit model and emulation equivalent model schematic diagram；
Fig. 4 is the electrical simulation side of the exchange energy-consuming device according to an embodiment of the invention for implementing flexible DC transmission
The thyristor valve Control System Imitation model schematic of method；
Fig. 5 is the electrical simulation side of the exchange energy-consuming device according to an embodiment of the invention for implementing flexible DC transmission
The line switching device emulation model schematic of method；
Fig. 6 is the electrical simulation side of the exchange energy-consuming device according to an embodiment of the invention for implementing flexible DC transmission
The arrester simulation model schematic diagram of method；
Fig. 7 is the electrical simulation side of the exchange energy-consuming device according to an embodiment of the invention for implementing flexible DC transmission
The simulation model circuit diagram of the exchange energy-consuming device of method；
Fig. 8 is the electrical simulation side of the exchange energy-consuming device according to an embodiment of the invention for implementing flexible DC transmission
The trigger signal waveform diagram of the exchange energy-consuming device of method；
Fig. 9 is the electrical simulation side of the exchange energy-consuming device according to an embodiment of the invention for implementing flexible DC transmission
The voltage waveform view at the thyristor both ends of the exchange energy-consuming device of method.
Below in conjunction with drawings and examples, the present invention will be further explained.
Specific embodiment
The specific embodiment that the present invention will be described in more detail below with reference to accompanying drawings.Although being shown in attached drawing of the invention
Specific embodiment, it being understood, however, that may be realized in various forms the present invention without that should be limited by embodiments set forth here
System.It is to be able to thoroughly understand the present invention on the contrary, providing these embodiments, and can be complete by the scope of the present invention
Be communicated to those skilled in the art.
It should be noted that having used some vocabulary in the specification and claims to censure specific components.Ability
Field technique personnel it would be appreciated that, technical staff may call the same component with different nouns.This specification and right
It is required that not in such a way that the difference of noun is as component is distinguished, but with the difference of component functionally as differentiation
Criterion."comprising" or " comprising " as mentioned throughout the specification and claims are an open language, therefore should be solved
It is interpreted into " including but not limited to ".Specification subsequent descriptions are to implement better embodiment of the invention, so the description be with
For the purpose of the rule of specification, the range that is not intended to limit the invention.Protection scope of the present invention is when the appended right of view
It is required that subject to institute's defender.
In order to facilitate understanding of embodiments of the present invention, further by taking specific embodiment as an example below in conjunction with attached drawing to be solved
Explanation is released, and each attached drawing does not constitute the restriction to the embodiment of the present invention.
In order to better understand, Fig. 1 is the exchange energy-consuming device of flexible DC transmission according to an embodiment of the invention
Electrical simulation method step schematic diagram, as shown in Figure 1, a kind of flexible DC transmission exchange energy-consuming device electrical simulation
Method the following steps are included:
In first step S1, exchange energy-consuming device main wiring diagram and power equipment parameter are obtained；
In second step S2, component-level model foundation is carried out based on the power equipment；
In third step S3, exchange energy-consuming device system emulation circuit model is established based on the main wiring diagram；
Voltage and or current detection is placed in four steps S4, at one or more nodes in the power equipment
Unit；
In 5th step S5, change exchange energy-consuming device operating status and fault condition, voltage and or current detection unit
Obtain voltage and current data.
In one embodiment of the method, in first step S1, exchange energy-consuming device include line switching equipment,
Arrester, voltage transformer and/or current transformer, multiple thyristor valves and energy consumption resistor, attached drawing 2 are one implementation of the present invention
The flexible DC transmission engineering of example exchanges energy-consuming device circuit interconnect pattern, and referring to fig. 2, the main wiring diagram is line switching equipment
Multiple thyristor valves and energy consumption resistor are connected via voltage transformer and/or current transformer, wherein energy consumption resistor and thyristor
Valve series connection is one group, and multiple groups join end to end, and arrester parallel line switchgear, power equipment parameter includes line switching equipment
Fracture capacitor, the equalizing resistance of the nonlinear resistance U-I curve and entrance capacitance of arrester, thyristor valve, damping resistance, resistance
Buddhist nun's capacitor, turn on thyristors and the entrance for turning off resistance, the resistance value of energy consumption resistor, voltage transformer and/or current transformer
Capacitor.
In one embodiment of the method, line switching equipment includes disconnecting switch and breaker.
In one embodiment of the method, attached drawing 3 (a) to Fig. 3 (c) be thyristor valve actual circuit model and
Emulate equivalent model, Fig. 3 (a) be thyristor valve actual circuit model, be made of N number of thyristor grade, each thyristor grade by
The thyristor of a pair of of reverse parallel connection, an equalizing resistance Ra, a damping branch circuit parallel connection composition, damping branch is damping capacitor Cd
It connects with damping resistance Rd, thyristor valve both end voltage is u；Fig. 3 (b) is the actual circuit model of each thyristor grade；Fig. 3
It (c) is the equivalent circuit for simulating model of thyristor valve, in second step S2, the thyristor valve is modeled as damping capacitor Cd/N string
In parallel with the thyristor of a pair of of reverse parallel connection respectively and equalizing resistance Ra is in parallel after joining damping resistance NRd, and wherein N is number.
In one embodiment of the method, attached drawing 4 is the schematic diagram of thyristor valve Control System Imitation model, such as
Shown in figure, in second step S2, the thyristor valve control system in the thyristor valve of modeling includes phaselocked loop, interpolation pulse generation
Device, trigger switch and Trigger Angle.
In one embodiment of the method, Fig. 5 is that implementation flexible direct current according to an embodiment of the invention is defeated
The line switching device emulation model schematic of the electrical simulation method of the exchange energy-consuming device of electricity, in second step S2, route
Switchgear is modeled as breaking capacitance shunt trip breaker module.
In one embodiment of the method, Fig. 6 is that implementation flexible direct current according to an embodiment of the invention is defeated
The arrester simulation model schematic diagram of the electrical simulation method of the exchange energy-consuming device of electricity, in second step S2, modeling it is lightning-arrest
Device includes the capacitor and ZNO module of ground connection.
In one embodiment of the method, Fig. 7 is that implementation flexible direct current according to an embodiment of the invention is defeated
The simulation model circuit diagram of the exchange energy-consuming device of the electrical simulation method of the exchange energy-consuming device of electricity, third step S3
In, exchange energy-consuming device system emulation circuit model is that line switching equipment connects via voltage transformer and/or current transformer
Multiple thyristor valves and energy consumption resistor are connect, three alternate thyristor valves are connected with energy consumption △ shape, cut-off reality by thyristor valve
Existing quick-switching response.
In one embodiment of the method, the phase of route line voltage is extracted using phase-locked loop module and generates 6
Pulse zig-zag；Then the zig-zag that input phaselocked loop generates at the high level end of interpolation pulse generator, in low level
End input Trigger Angle numerical value, generates 6 pulse triggering signals；Trigger signal be applied to thyristor gate leve end to thyristor cut-off into
Row control.
In one embodiment of the method, in the 5th step S5, change exchange energy-consuming device operating status and event
Hinder situation and obtain voltage oscillogram, disconnecting switch and breaker are completely in closure or on state, and thyristor valve is off
Or by triggering and conducting state, it is based on trigger signal waveform, on voltmeter and ammeter monitoring route and energy consumption resistor, brilliant lock
Voltage and current waveform diagram on pipe valve.
For a further understanding of the present invention, in one embodiment, energy-consuming device main wiring diagram and power equipment are obtained
Parameter.The object of simulation calculation of the present invention is that flexible DC transmission engineering exchanges energy-consuming device, and basic structure is by 2 institute of attached drawing
Show.Need to obtain wall bushing entrance capacitance, line switching equipment fracture capacitor, thyristor valve equalizing resistance, damping resistance, resistance
Buddhist nun's capacitor, turn on thyristors and shutdown resistance, energy consumption resistor resistance value, arrester nonlinear resistance U-I curve and entrance capacitance
The parameter of the equal secondary devices such as primary equipments and voltage transformer entrance capacitance, current transformer entrance capacitance.
Component-level model foundation is carried out to the power equipment of exchange energy-consuming device.According to attached drawing 3 (a)-model shown in fig. 6
Model buildings are carried out respectively to thyristor valve, thyristor valve control system, switchgear and arrester.
Establish exchange energy-consuming device system emulation circuit model.Energy-consuming device system discharge circuit is exchanged according to main wiring diagram
It is built, as shown in Fig. 7.
Voltage, electric current observation point are placed at key equipment node.
Change energy-consuming device operating status and fault condition, it is operated normally and fault characteristic is studied.Pass through touching
The shutdown for sending out angle control thyristor, emulates line switching switching operation and fault using time control logic module, real
Now to the research of exchange energy-consuming device electrical characteristic, Fig. 8 is implementation flexible DC transmission according to an embodiment of the invention
The trigger signal waveform diagram of the exchange energy-consuming device of the electrical simulation method of energy-consuming device is exchanged, Fig. 9 is according to the present invention
The brilliant lock of the exchange energy-consuming device of the electrical simulation method of the exchange energy-consuming device of the implementation flexible DC transmission of one embodiment
The voltage waveform view at pipe both ends.Conducting is transformed by off state as attached drawing 8, Fig. 9 show thyristor valve in 0.1s
The voltage oscillogram of the start pulse signal of state and corresponding thyristor valve both ends.It can be seen that this method can effectively, it is intuitive,
Accurately to the electrical characteristic simulation study of soft straight power transmission engineering exchange energy-consuming device.
The electrical of energy-consuming device is exchanged in one embodiment of the method, in a kind of flexible DC transmission engineering to imitate
True method carries out electrical simulation to exchange energy-consuming device in flexible DC transmission engineering based on PSCAD electromagnetic transient simulation software,
Component-level modeling is carried out to each power equipment in energy-consuming device working line according to device model parameter first；Then basis
Actual control principle realizes the emulation mould of thyristor control system using computing modules such as phaselocked loop, interpolation pulse generators
Type is built；Then connecting components module forms artificial circuit when energy-consuming device operates normally, monitoring key equipment node
Voltage and current signal；Finally switch switching operation and fault are emulated using time control logic module, realized to exchange
The research of energy-consuming device electrical characteristic.
In one embodiment of the method, energy-consuming device is exchanged by line switching disconnecting switch, breaker, brilliant lock
Pipe valve contains Triggering Control System, the components such as energy consumption resistor composition, and three alternate thyristor valves are taken △ shape to connect, passed through with energy consumption
Quick-switching response is realized in cut-offfing for valve.
In one embodiment of the method, power equipment include wall bushing, disconnecting switch high speed grounding switch,
The secondary devices such as the primary equipments such as breaker, thyristor valve, energy consumption resistor, arrester and voltage transformer, current transformer.
In one embodiment of the method, the modeling of power equipment component grade is: wall bushing, earthing switch, electricity
The equipment such as pressure mutual inductor, current transformer can be equivalent to corresponding entrance capacitance；Arrester takes Zno varistor in parallel
The model of entrance capacitance；Disconnecting switch and breaker take the model of ideal breaker module parallel connection fracture capacitor；Thyristor valve
It is composed in series by multiple thyristor grades, each thyristor grade is by 2 anti-parallel thyristors, equalizing resistance and antihunt circuit parallel connection group
At since the effect of equalizing resistance thinks that the voltage of each thyristor grade in valve is identical, thyristor valve can be equivalent to a crystalline substance
Brake tube grade model.
In one embodiment of the method, disconnecting switch and breaker on route are completely in closure conducting shape
State, thyristor valve are off or by triggering and conducting states.With on voltmeter and ammeter module monitors route and energy consumption electricity
Voltage and current signals in resistance, thyristor valve, can study the electrical characteristic on energy-consuming device entirety and component.
Although embodiment of the present invention is described in conjunction with attached drawing above, the invention is not limited to above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiment are only schematical, directiveness, rather than restricted
's.Those skilled in the art are under the enlightenment of this specification and in the range for not departing from the claims in the present invention and being protected
In the case where, a variety of forms can also be made, these belong to the column of protection of the invention.
Claims (10)
1. a kind of electrical simulation method of the exchange energy-consuming device of flexible DC transmission, the described method comprises the following steps:
In first step (S1), exchange energy-consuming device main wiring diagram and power equipment parameter are obtained；
In second step (S2), component-level model foundation is carried out based on the power equipment；
In third step (S3), exchange energy-consuming device system emulation circuit model is established based on the main wiring diagram；
It is single that voltage and or current detection is placed in four steps (S4), at one or more nodes in the power equipment
Member；
In 5th step (S5), changes exchange energy-consuming device operating status and fault condition, voltage and or current detection unit obtain
Obtain voltage and current data.
2. according to the method described in claim 1, wherein, it is preferred that in first step (S1), exchange energy-consuming device includes route
Switchgear, arrester, voltage transformer and/or current transformer, multiple thyristor valves and energy consumption resistor, the main wiring diagram
Multiple thyristor valves and energy consumption resistor are connected via voltage transformer and/or current transformer for line switching equipment, wherein consumption
Energy resistance and thyristor valve tandem are one group, and multiple groups join end to end, arrester parallel line switchgear, power equipment parameter packet
Include the fracture capacitor of line switching equipment, the equal piezoelectricity of the nonlinear resistance U-I curve and entrance capacitance of arrester, thyristor valve
Resistance, damping resistance, damping capacitor, turn on thyristors and shutdown resistance, the resistance value of energy consumption resistor, voltage transformer and/or electricity
The entrance capacitance of current transformer.
3. according to the method described in claim 2, wherein, line switching equipment includes disconnecting switch and breaker.
4. according to the method described in claim 2, wherein, in second step (S2), the thyristor valve is modeled as damping capacitor
In parallel with the thyristor of a pair of of reverse parallel connection respectively and equalizing resistance Ra is in parallel after Cd/N series damping resistor NRd, and wherein N is
Number.
5. according to the method described in claim 2, wherein, the thyristor valve in second step (S2), in the thyristor valve of modeling
Control system includes phaselocked loop, interpolation pulse generator, trigger switch and Trigger Angle.
6. according to the method described in claim 2, wherein, in second step (S2), line switching equipment modeling is at breaking capacitance
Shunt trip breaker module.
7. according to the method described in claim 2, wherein, in second step (S2), the arrester of modeling includes the capacitor of ground connection
With ZNO module.
8. according to the method described in claim 2, wherein, in third step (S3), exchanging energy-consuming device system emulation circuit mould
Type is line switching equipment via voltage transformer and/or the multiple thyristor valves of current transformer connection and energy consumption resistor, three-phase
Between thyristor valve with energy consumption △ shape connect, by thyristor valve cut-off realize quick-switching respond.
9. according to the method described in claim 8, wherein, extracting the phase of route line voltage using phase-locked loop module and generating 6
Pulse zig-zag；Then the zig-zag that input phaselocked loop generates at the high level end of interpolation pulse generator, in low level
End input Trigger Angle numerical value, generates 6 pulse triggering signals；Trigger signal be applied to thyristor gate leve end to thyristor cut-off into
Row control.
10. according to the method described in claim 1, wherein, in the 5th step (S5), change exchange energy-consuming device operating status and
Fault condition obtains voltage oscillogram, and disconnecting switch and breaker are completely in closure or on state, and thyristor valve, which is in, to close
It is disconnected or by triggering and conducting state, it is based on trigger signal waveform, on voltmeter and ammeter monitoring route and energy consumption resistor, crystalline substance
Voltage and current waveform diagram on gate tube valve.
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| CN201811553134.0A CN109687437B (en) | 2018-12-18 | 2018-12-18 | Electrical simulation method of alternating current energy consumption device for flexible direct current transmission |
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| CN201811553134.0A CN109687437B (en) | 2018-12-18 | 2018-12-18 | Electrical simulation method of alternating current energy consumption device for flexible direct current transmission |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110209065A (en) * | 2019-04-30 | 2019-09-06 | 南方电网科学研究院有限责任公司 | MMC power module grade failure and relay protective scheme dynamic simulator system and method |
| CN112327082A (en) * | 2020-10-30 | 2021-02-05 | 国网江苏省电力有限公司电力科学研究院 | Flexible direct current engineering complete energy consumption device testing method, device and system |
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