CN107168106A - A kind of VBE system simulations method - Google Patents

A kind of VBE system simulations method Download PDF

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Publication number
CN107168106A
CN107168106A CN201710523518.7A CN201710523518A CN107168106A CN 107168106 A CN107168106 A CN 107168106A CN 201710523518 A CN201710523518 A CN 201710523518A CN 107168106 A CN107168106 A CN 107168106A
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CN
China
Prior art keywords
signal
trigger
converter valve
breaking continuous
duration
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Pending
Application number
CN201710523518.7A
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Chinese (zh)
Inventor
李胜男
邢超
苏进国
郭成
徐志
荆雪记
胡永昌
何鑫
张冀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electric Power Research Institute of Yunnan Power Grid Co Ltd
Electric Power Research Institute of Yunnan Power System Ltd
Original Assignee
Electric Power Research Institute of Yunnan Power System Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Electric Power Research Institute of Yunnan Power System Ltd filed Critical Electric Power Research Institute of Yunnan Power System Ltd
Priority to CN201710523518.7A priority Critical patent/CN107168106A/en
Publication of CN107168106A publication Critical patent/CN107168106A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B17/00Systems involving the use of models or simulators of said systems
    • G05B17/02Systems involving the use of models or simulators of said systems electric

Abstract

This application discloses a kind of VBE system simulations method, including according to the terminal voltage of converter valve, the breaking continuous signal of generation;Receive the excitation signal that control system is sent;Judge whether excitation signal is located in the duration of the breaking continuous signal;If whether excitation signal is located in the duration of the breaking continuous signal, a triggered as normal signal is generated;Within the duration of the excitation signal, if receiving new breaking continuous signal, trigger irregularly signal is generated.This application provides a kind of VBE system simulations method, simulate two functions of the VBE systems needed to use in RTDS l-G simulation tests, that is triggered as normal converter valve and trigger irregularly converter valve function, solve in conventional art, due to carrying out RTDS l-G simulation tests using VBE entities, and the l-G simulation test process that causes is numerous and diverse, inefficiency and the problem of high experimentation cost, improves the efficiency of RTDS l-G simulation tests, also saves hardware device.

Description

A kind of VBE system simulations method
Technical field
The application is related to technical field of direct current power transmission, more particularly to a kind of VBE system simulations method.
Background technology
RTDS (real time digital simulator, Real Time Digital Simulator) is a kind of research Complex Power system The digital simulation technique of system, the advantages of because of its high-performance calculation, real-time simulation, is widely used in high-voltage dc transmission electrical domain. For example, the direct-current power transmission control protection system joint debugging closed loop test emulated using RTDS, in the joint debugging closed loop test, waits to simulate Power equipment include direct-current power transmission control protection system (hereinafter referred to as control system), VBE (valve base Electronics, valve base electronic device) and thyristor valves (hereinafter referred to as converter valve).Wherein, VBE connections direct current transportation Control protection system and thyristor valves, and for the signal according to direct-current power transmission control protection system, act in crystalline substance The trigger signal of brake tube converter valve.
In this l-G simulation test, most power equipment realizes its function using digital simulation mode, and still, VBE is still Its function is completed using entity VBE.The reason is that VBE function is more and complicated, it is therefore more difficult to realize the mould to VBE Intend.
At present, using entity VBE complete VBE function still have many inconveniences, for example, entity VBE need to Producer asks for or bought, the limitation of the condition that is put to the test and price, and most of producers can not provide corresponding VBE entities.Certainly, i.e., Shi Fa producers provide corresponding VBE entities, in actual RTDS l-G simulation tests, because the use of VBE entities is complex, from And cause the inefficiency of RTDS l-G simulation tests.
The content of the invention
This application provides a kind of VBE system simulations method, to solve the system because lacking simulation VBE, cause to adopt The l-G simulation test of DC transmission engineering is carried out with VBE entities, so as to cause numerous and diverse l-G simulation test process, inefficiency and experiment The problem of cost is high.
A kind of VBE system simulations method, VBE systems are used to connect control system and change of current valve group, and change of current valve group includes many The converter valve of individual series connection, methods described includes:
According to the terminal voltage of the converter valve, break signal is generated;
According to the break signal, the breaking continuous signal of generation;
Receive the excitation signal for being used to indicate converter valve conducting that the control system is sent;
Judge whether the excitation signal is located in the duration of the breaking continuous signal;
If the excitation signal was located in the duration of the breaking continuous signal, a triggered as normal signal is generated, The triggered as normal signal is used to trigger the converter valve conducting with triggering the breaking continuous signal interruption;
Within the duration of the excitation signal, if not receiving new breaking continuous signal, end trigger work;
Within the duration of the excitation signal, if receiving new breaking continuous signal, generation trigger irregularly letter Number, the trigger irregularly signal is used to trigger the converter valve conducting;
Previous step is repeated, until the duration of the excitation signal terminates, end trigger work.
Preferably, a breaking continuous signal is generated, is specifically included,
The break signal is sent to monostable flipflop, excitation of the monostable flipflop in the break signal Under, send breaking continuous signal.
Preferably, judge whether the excitation signal is located in the duration of the breaking continuous signal, specifically include,
Judge whether the excitation signal is located in the duration of the breaking continuous signal using with logic circuit.
Preferably, trigger irregularly signal is generated, is specifically included,
Judge new breaking continuous signal whether after a upper triggered as normal signal or trigger irregularly signal are sent Reached in first preset time;
If new breaking continuous signal is first pre- after a upper triggered as normal signal or trigger irregularly signal are sent If being reached in the time, then trigger irregularly signal is generated;
If new breaking continuous signal whether the after a upper triggered as normal signal or trigger irregularly signal are sent Reach, then postpone after the second preset time in one preset time, generate trigger irregularly signal.
Preferably, according to the terminal voltage of the converter valve, break signal is generated, is specifically included,
Judge whether the terminal voltage of the converter valve exceedes default open circuit voltage;
If the terminal voltage of the converter valve exceedes default open circuit voltage, break signal is generated.
This application provides a kind of VBE system simulations method, using digital simulation method, simulate in RTDS l-G simulation tests Two functions of the VBE systems needed to use, i.e. triggered as normal converter valve and trigger irregularly converter valve function, solve tradition In technology, due to using VBE entities carry out RTDS l-G simulation tests, and the l-G simulation test process caused is numerous and diverse, inefficiency and The problem of experimentation cost is high, improves the efficiency of RTDS l-G simulation tests, also saves hardware device.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, letter will be made to the required accompanying drawing used in embodiment below Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor, Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of one embodiment of VBE system simulation methods;
Fig. 2 is the time diagram of generation triggered as normal signal;
Fig. 3 is the time diagram of generation trigger irregularly signal.
Embodiment
In actual network system, VBE systems connect (including the multiple changes of current connected of control system and change of current valve group Valve), VBE systems have the multiple functions such as the state of triggering converter valve, detection converter valve and other relevant devices.In RTDS emulation In experiment, the function of VBE system trigger converter valves is only related to.Therefore, the application will simplify the function of VBE systems, i.e. the application VBE system simulations method will only simulation VBE system triggers converter valve conducting function.VBE system triggers converter valve is included just Often trigger and trigger irregularly.Generally, VBE systems can complete the triggering and conducting to converter valve using triggered as normal, When converter valve occurs to block again, VBE systems then complete the triggering and conducting to converter valve using trigger irregularly.
Fig. 1 is the flow chart of one embodiment of VBE system simulation methods, as shown in figure 1, VBE system simulation method bags Include:
S1, according to the terminal voltage of converter valve, generates break signal.It is specifically included, and whether the terminal voltage of detection converter valve More than default open circuit voltage;If the terminal voltage of converter valve exceedes default open circuit voltage, break signal is generated.
The method whether terminal voltage of detection converter valve exceedes default open circuit voltage has a variety of, for example, voltage can be used Whether the terminal voltage of comparator detection converter valve exceedes default open circuit voltage.Voltage comparator is by the terminal voltage of converter valve and in advance If open circuit voltage be compared calculating.If the terminal voltage of converter valve is in not less than default open circuit voltage, i.e. converter valve and led Logical state, then voltage comparator not as.If the terminal voltage of converter valve, which exceedes default open circuit voltage, i.e. converter valve, is in open circuit State, then voltage comparator generate a break signal.
S2, according to break signal, sends a breaking continuous signal.
Break signal is a duration shorter pulse signal, for the ease of break signal and excitation signal hereafter Coordinate in generation trigger signal, the application, break signal is converted into breaking continuous signal, wherein, breaking continuous signal is can Continue the high level signal of one section of long period.
The method that break signal is converted into breaking continuous signal has a variety of, for example, can use monostable flipflop.Voltage Comparator sends the break signal of generation to a monostable flipflop, monostable flipflop is switched to temporary stable state by stable state, So as to produce a continuous, high level signal, i.e., breaking continuous signal.Monostable flipflop can be when temporary stable state continues one section Between, within this time, monostable flipflop will uninterruptedly send breaking continuous signal;When monostable flipflop is jumped by temporary stable state After the state that stabilizes, monostable flipflop, which is terminated, sends breaking continuous signal.
S3, receives the excitation signal for being used to indicate converter valve conducting that control system is sent.
Excitation signal is the command signal that the instructions converter valve that control system is sent is turned on, and in the application, excitation signal is Clock signal, i.e. system send an excitation signal at interval of same time, and the duration of each excitation signal is identical.
S4, judges whether excitation signal is located in the duration of the breaking continuous signal.
In the application, judge whether excitation signal is located at the duration of the breaking continuous signal using with logic circuit It is interior.Monostable flipflop and control system independence the breaking continuous signal or excitation signal of each self-generating are sent to logic Circuit, only when breaking continuous signal and excitation signal are entering with logic circuit, can just be turned on logic circuit.Cause This, when breaking with logic circuit, then judges that excitation signal is not located in the duration of the breaking continuous signal;When electric with logic When road is turned on, then judge that excitation signal was located in the duration of the breaking continuous signal.
S5, if whether excitation signal is located in the duration of the breaking continuous signal, one triggered as normal letter of generation Number, triggered as normal signal is used to trigger converter valve conducting and the breaking continuous signal of triggering is interrupted.
In the application, the process of generation triggered as normal signal is specifically included, with logic circuit in breaking continuous signal with swashing Triggered as normal signal is generated under the common activation of signalling, and triggered as normal signal is sent to converter valve, converter valve is normal Triggering and conducting under the excitation of trigger signal.
Receive in the break signal of next time, this example, also will normally be touched with logic circuit for the ease of monostable flipflop Signal and send to monostable flipflop, make to change monostable flipflop and stable state is reduced to by temporary stable state, interrupt and believed by this open circuit Number trigger breaking continuous signal.
Under normal circumstances, triggered as normal signal will trigger converter valve conducting, now, and the terminal voltage of converter valve will be less than open circuit Voltage, and then cause to generate without breaking continuous signal.But, when converter valve is blocked again, the terminal voltage of converter valve will again More than open circuit voltage, so as to generate new break signal, and then new breaking continuous signal is generated.To make the converter valve weight of blocking In new conducting, the application, trigger irregularly signal will be generated, the converter valve after blocking is encouraged again by trigger irregularly signal Conducting, this process is specific as follows.
S6, judged within the duration of the excitation signal, if receive new breaking continuous signal.
S7, if not receiving new breaking continuous signal, end trigger work.
If within the duration of the pumping signal, new breaking continuous signal is not received, illustrate that converter valve is in and lead Logical state, without sending trigger signal again, so far, terminates the triggering work to converter valve.
S8, if receiving new breaking continuous signal, generates trigger irregularly signal, trigger irregularly signal is used to touch Converter valve conducting is sent out, return to step S6 terminates or no longer received the continuous letter of new open circuit up to the duration of the excitation signal Number, end trigger work.
In the present embodiment, the process of generation trigger irregularly signal is specifically included,
Judge new breaking continuous signal whether after a upper triggered as normal signal or trigger irregularly signal are sent Reached in first preset time;
If new breaking continuous signal is first pre- after a upper triggered as normal signal or trigger irregularly signal are sent If being reached in the time, then trigger irregularly signal is generated;
If new breaking continuous signal whether the after a upper triggered as normal signal or trigger irregularly signal are sent Reach, then postpone after the second preset time in one preset time, generate trigger irregularly signal.
It will not limited specifically for the specific duration of the first preset time, the second preset time herein, this area skill Art personnel can be set accordingly according to the actual requirements.In the present embodiment, the first preset time is 100 μ s, second it is default when Between be 50 μ s.
Fig. 2 is generates the time diagram of triggered as normal signal, as shown in Fig. 2 as the terminal voltage U of converter valveforMore than default Open circuit voltage UrefWhen, break signal IP is generated, break signal IP is a duration shorter pulse signal;Break signal It is converted into a long-term breaking continuous signal QS;When control system sends excitation signal CP, i.e. open circuit connects In the presence of continuing signal QS and excitation signal CP simultaneously, then triggered as normal signal P1 is generated, meanwhile, block road continuous signal QS.
Fig. 3 is the time diagram of generation trigger irregularly signal, as shown in figure 3, generating after triggered as normal signal P1, is swashed at this In signalling CP duration, if receiving new break signal again, trigger irregularly signal is generated.For example, in life T1 moment into after triggered as normal signal P1, wherein t1<100us, the terminal voltage U of converter valveforMore than default open circuit voltage UrefWhen, a new break signal IP is generated, a new breaking continuous signal QS is then generated;Now, breaking continuous signal QS with Excitation signal CP exists simultaneously, then generates trigger irregularly signal P2.The t2 moment after generation trigger irregularly signal P2, its Middle t2>100us, when breaking continuous signal QS and excitation signal CP simultaneously in the presence of, generate trigger irregularly signal P3.It is different from Trigger irregularly signal P2 generating process, during this, does not exist simultaneously in breaking continuous signal QS and excitation signal CP The first moment generation trigger irregularly signal P3, but after delay 50us, just generation trigger irregularly signal P3.
Embodiment of the present invention above is not intended to limit the scope of the present invention..

Claims (5)

1. a kind of VBE system simulations method, VBE systems are used to connect control system and change of current valve group, change of current valve group includes multiple The converter valve of series connection, it is characterised in that methods described includes:
According to the terminal voltage of the converter valve, break signal is generated;
According to the break signal, the breaking continuous signal of generation;
Receive the excitation signal for being used to indicate converter valve conducting that the control system is sent;
Judge whether the excitation signal is located in the duration of the breaking continuous signal;
If the excitation signal was located in the duration of the breaking continuous signal, a triggered as normal signal is generated, it is described Triggered as normal signal is used to trigger the converter valve conducting with triggering the breaking continuous signal interruption;
Within the duration of the excitation signal, if not receiving new breaking continuous signal, end trigger work;
Within the duration of the excitation signal, if receiving new breaking continuous signal, trigger irregularly signal, institute are generated Stating trigger irregularly signal is used to trigger the converter valve conducting;
Previous step is repeated, until the duration of the excitation signal terminates, end trigger work.
2. according to the method described in claim 1, it is characterised in that according to the break signal, one open circuit of generation is continuously believed Number, specifically include,
The break signal is sent to monostable flipflop, the monostable flipflop under the excitation of the break signal, Send breaking continuous signal.
3. according to the method described in claim 1, it is characterised in that judge whether the excitation signal is located at the open circuit and continuously believes Number duration in, specifically include,
Judge whether the excitation signal is located in the duration of the breaking continuous signal using with logic circuit.
4. according to the method described in claim 1, it is characterised in that generation trigger irregularly signal, specifically include,
Judge new breaking continuous signal whether first after a upper triggered as normal signal or trigger irregularly signal are sent Reached in preset time;
If new breaking continuous signal is when first after a upper triggered as normal signal or trigger irregularly signal are sent is default It is interior to reach, then generate trigger irregularly signal;
If whether new breaking continuous signal is first pre- after a upper triggered as normal signal or trigger irregularly signal are sent If being reached in the time, then postpone after the second preset time, generate trigger irregularly signal.
5. break signal according to the method described in claim 1, it is characterised in that according to the terminal voltage of the converter valve, is generated, Specifically include,
Judge whether the terminal voltage of the converter valve exceedes default open circuit voltage;
If the terminal voltage of the converter valve exceedes default open circuit voltage, break signal is generated.
CN201710523518.7A 2017-06-30 2017-06-30 A kind of VBE system simulations method Pending CN107168106A (en)

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