CN103257574A - Current margin compensation simulation device - Google Patents
Current margin compensation simulation device Download PDFInfo
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- CN103257574A CN103257574A CN2013101062496A CN201310106249A CN103257574A CN 103257574 A CN103257574 A CN 103257574A CN 2013101062496 A CN2013101062496 A CN 2013101062496A CN 201310106249 A CN201310106249 A CN 201310106249A CN 103257574 A CN103257574 A CN 103257574A
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- electric current
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Abstract
The invention discloses a current margin compensation simulation device, belongs to the field of electronic measuring, and relates to a current margin compensation simulation device used for simulation research of a direct current controlling protecting system of high-voltage direct current transmission equipment. The current margin compensation simulation device comprises a subtractor, a first mode selection switch, a speed limiting device, an integrator, a summator, a second mode selection switch and an inertia element. An electrode power controlling device is connected to the subtractor and the summator, and the subtractor is connected to a neutral current signal end of a thyristor converter. The subtractor is connected to the speed limiting device through the first mode selection switch. The speed limiting device is connected to the summator through the integrator. An output end of the summator is used as an output end of the electrode power controlling device, and the output end of the summator is connected to a converter trigger angle controlling module of the direct current controlling protecting system. The current margin compensation simulation device can simulate and reflect an operation state of the direct current controlling protecting device truly, and provide a corresponding simulation result for the researching and design of the direct current controlling protecting device.
Description
Technical field
The invention belongs to the electric measurement field, relate in particular to a kind of electric current nargin of studying for the DC control protection system simulation of high-voltage direct-current transmission system and compensate simulation testing device.
Background technology
The continuous growth of electricity needs has caused transmission system to develop to the direction of growing distance, big capacity and high stability.Along with the ultra-high voltage AC transmission engineering in each electrical network zone and the construction project of high voltage direct current transmission project constantly increase, the electrical network of power consumption concentrated area presents the extra-high voltage alternating current-direct current series-parallel connection receiving end electrical network feature of tangible many direct currents feed-in, electric network composition is tight, electrical distance is tightr between many ac and dc circuits, behind extra-high voltage and the UHV (ultra-high voltage) fault in ac transmission system, easily cause and comprise high voltage direct current at many interior direct currents while commutation failures, and its rejuvenation of the commutation failure of many times direct currents will produce greater impact to AC system, if the recovery policy mismate of each straight-flow system, then also might cause many direct currents that continuous commutation failure takes place simultaneously, even cause the direct current locking.Many times bipolar locking takes place in direct current simultaneously, and a large amount of trends shift or on a large scale with the initiating system stable problem.Reciprocation between this ac and dc systems brings huge challenge for the safe operation of extra-high voltage alternating current-direct current series-parallel connection receiving end electrical network.
Therefore, in research or the design phase of high voltage direct current transmission project, must test and emulation for the stability of extra-high voltage alternating current-direct current series-parallel connection receiving end electrical network to the reciprocation between ac and dc systems, and with reference to test and simulation result, result to research or design verifies, the stability of system is assessed.China's utility model patent " a kind of many feed-ins DC transmission system real-timedigital simulation model " (utility model patent number: ZL201210532559.X Granted publication number: CN102945004A) disclose many feed-ins DC transmission system real-timedigital simulation model, it comprises the equivalent super high voltage direct current electricity transmission system of a plurality of parallel connections, and described super high voltage direct current electricity transmission system comprises primary system real-timedigital simulation model and electrical secondary system real-timedigital simulation model; Described primary system real-timedigital simulation model comprises current conversion station and DC power transmission line, and described current conversion station is arranged on the two ends of DC power transmission line; Described electrical secondary system real-timedigital simulation model comprises current conversion station control system and protection system, and described current conversion station control system is connected with current conversion station with protection system, is used for the operation of control and protection current conversion station.By control and the protection to the current conversion station operation of current conversion station control system and protection system, avoid easily causing behind the fault in ac transmission system impact that many times direct current simultaneous faultss and many times direct current faults and rejuvenation thereof produce AC system.But this realistic model does not relate to the emulation of electric current nargin compensation, truly the electric current nargin of simulated high-pressure direct current transportation DC control protection system compensation running status.
Summary of the invention
The objective of the invention is to provide a kind of electric current nargin compensation simulator; it can simulate the electric current nargin compensating coefficient of reflection D.C. high voltage transmission DC control protection system truly; for electric current nargin Compensation Research or the design of DC control protective device provides corresponding simulation result, solve the technical matters that electric current nargin Compensation Research or design for the DC control protective device provide verification platform.
The present invention solves the problems of the technologies described above the technical scheme that adopts:
A kind of electric current nargin compensation simulator is used for the emulation of the DC control protection system of high-voltage direct-current transmission system, and described electric current nargin compensation simulator is connected to the outgoing side of the utmost point output control device of DC control protection system, it is characterized in that:
Described electric current nargin compensation simulator comprises subtracter, first mode selection switch, speed limiting device, integrator and totalizer;
The current command signal of described utmost point output control device is connected to the in-phase input end of described subtracter, and is connected to an input end of described totalizer, and the inverting input of described subtracter is connected to the neutral current signal end of thyristor converter device;
The output terminal of described subtracter is connected to the input end of described speed limiting device by first mode selection switch; The output terminal of described speed limiting device is connected to another input end of totalizer by integrator; The output terminal of described totalizer as the trigger pulse control output end of utmost point output control device, is connected to the transverter trigger angle control module of DC control protection system.
A kind of preferable technical scheme of electric current nargin compensation simulator of the present invention, it is characterized in that described electric current nargin compensation simulator also comprises second mode selection switch and inertance element, the input end of described inertance element selects to be connected to corresponding compensating coefficient setting value by described second mode selection switch; The output terminal of described inertance element is connected to described integrator.
The invention has the beneficial effects as follows:
1. the electric current nargin compensation running status of DC control protective device can be simulated, be reflected to electric current nargin of the present invention compensation simulator truly, for research or the design of DC control protective device provides corresponding simulation result;
2. electric current nargin compensation simulator of the present invention has the advantage of cross-platform emulation testing, both can realize with actual components in true environment, can realize with computer software in virtual environment again;
Description of drawings
Fig. 1 is the circuit theory diagrams for the simulator of DC control protection system;
Fig. 2 is the circuit theory diagrams of electric current nargin compensation simulator of the present invention.
The label of each parts among the above figure: 100-high-voltage direct-current transmission system; 110-alternating current filter switching device; the 120-converter power transformer; 130-thyristor converter device; the 200-control module; 210-angle, current/voltage reference value calculation element; 220-transverter trigger angle control device; 230-trigger pulse generation device, 240-change of current variation apparatus for controlling connection, 250-utmost point output control device; the 260-overload control apparatus; 270-Reactive Power Control device, 300-dc system protection unit, 900-operation control workstation.The 2531-subtracter, 2532-first mode selection switch, the 2533-speed limiting device, the 2534-integrator, 2535-second mode selection switch, 2536-inertance element, the 2537-totalizer, the neutral current signal of IDNC-thyristor converter device, the current command signal output terminal of IO10-utmost point output control device, IO_CFC-trigger pulse control output end.
Embodiment
In order to understand technique scheme of the present invention better, be explained in further detail below in conjunction with drawings and Examples.
Fig. 2 has showed an embodiment of electric current nargin compensation simulator of the present invention; be used for the emulation of the DC control protection system of high-voltage direct-current transmission system, electric current nargin compensation simulator is connected to the outgoing side of the utmost point output control device 250 of DC control protection system.The simulator of the DC control protection system of high-voltage direct-current transmission system as shown in Figure 1.
As shown in Figure 2, electric current nargin compensation simulator of the present invention comprises subtracter 2531, the first mode selection switchs 2532, speed limiting device 2533, integrator 2534 and totalizer 2537;
The current command signal output terminal IO10 of utmost point output control device 250, be connected to the in-phase input end of subtracter 2531, and be connected to an input end of totalizer 2537, the inverting input of subtracter 2531 is connected to the neutral current signal end IDNC of thyristor converter device 130.
The output terminal of subtracter 2531 is connected to the input end of speed limiting device 2533 by first mode selection switch 2532; The output terminal of speed limiting device 2533 is connected to another input end of totalizer 2537 by integrator 2534; The output terminal of totalizer 2537 as the trigger pulse control output end IO_CFC of utmost point output control device 250, is connected to the transverter trigger angle control module 220 of DC control protection system.First mode selection switch 2532 is controlled by phase shift running status RETARD.
Embodiment according to electric current nargin compensation simulator of the present invention shown in Figure 2, electric current nargin compensation simulator also comprises second mode selection switch 2535 and inertance element 2536, the input end of inertance element 2536 selects to be connected to corresponding compensating coefficient setting value by second mode selection switch 2535; The output terminal of inertance element 2536 is connected to integrator 2534.Second mode selection switch 2535 can select two states: RECT to represent the rectification side, and PPC_OPN represents utmost point power control running status.
The operational process of electric current nargin compensation simulator of the present invention is as follows:
Utmost point power control simulation device 250 receives power/current instruction and the power/current rising or falling speed from the operations staff.When carrying out the change power command, the DC power that realization is carried to the predetermined electric power definite value, guarantees to decide the fluctuation that DC power was controlled and decided to carry out between the Current Control not cause when pattern is changed to power by linear change simultaneously.Maximal value from the IOmax signal limitations current-order of overloading control module 260.When Current Control was transferred to the inversion side, the electric current that the compensation of electric current nargin compensation system equates with electric current nargin descended.The current command signal IO10 of utmost point power control simulation device 250 by trigger pulse control output end IO_CFC, is sent to the transverter trigger angle control module 220 of DC control protection system.
Those of ordinary skill in the art will be appreciated that; above embodiment illustrates technical scheme of the present invention; and be not to be used as limitation of the invention; any variation, modification of the above embodiment being done based on connotation of the present invention all will drop in the protection domain of claim of the present invention.
Claims (2)
1. an electric current nargin compensation simulator is used for the emulation of the DC control protection system of high-voltage direct-current transmission system, and described electric current nargin compensation simulator is connected to the outgoing side of the utmost point output control device of DC control protection system, it is characterized in that:
Described electric current nargin compensation simulator comprises subtracter, first mode selection switch, speed limiting device, integrator and totalizer;
The current command signal of described utmost point output control device is connected to the in-phase input end of described subtracter, and is connected to an input end of described totalizer, and the inverting input of described subtracter is connected to the neutral current signal end of thyristor converter device;
The output terminal of described subtracter is connected to the input end of described speed limiting device by first mode selection switch; The output terminal of described speed limiting device is connected to another input end of totalizer by integrator;
The output terminal of described totalizer is connected to the transverter trigger angle control module of DC control protection system as the output terminal of utmost point output control device.
2. electric current nargin according to claim 1 compensates simulator, it is characterized in that described electric current nargin compensation simulator also comprises second mode selection switch and inertance element, the input end of described inertance element selects to be connected to corresponding compensating coefficient setting value by described second mode selection switch; The output terminal of described inertance element is connected to described integrator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310106249.6A CN103257574B (en) | 2013-03-29 | 2013-03-29 | Current margin compensation simulation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310106249.6A CN103257574B (en) | 2013-03-29 | 2013-03-29 | Current margin compensation simulation device |
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| CN103257574A true CN103257574A (en) | 2013-08-21 |
| CN103257574B CN103257574B (en) | 2015-07-01 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1069666A1 (en) * | 1999-07-01 | 2001-01-17 | Abb Ab | Control of active power in a high voltage direct current transmission system |
| CN1808158A (en) * | 2005-12-15 | 2006-07-26 | 南京南瑞继保电气有限公司 | Pole block comprehensive distinguishing method for DC power transmission system |
| WO2007033620A1 (en) * | 2005-09-22 | 2007-03-29 | Siemens Aktiengesellschaft | Control method for transmitting direct current |
| CN102361329A (en) * | 2011-10-18 | 2012-02-22 | 山东电力研究院 | Modeling method for performing dynamic characteristic research on hybrid alternating current/direct current (AC/DC) transmission system |
| CN102945004A (en) * | 2012-12-11 | 2013-02-27 | 上海市电力公司 | Real-time digital simulation model for multi-infeed direct current power transmission system |
| CN203191715U (en) * | 2013-03-29 | 2013-09-11 | 国家电网公司 | Current margin compensation simulation device |
-
2013
- 2013-03-29 CN CN201310106249.6A patent/CN103257574B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1069666A1 (en) * | 1999-07-01 | 2001-01-17 | Abb Ab | Control of active power in a high voltage direct current transmission system |
| EP1069666B1 (en) * | 1999-07-01 | 2004-09-22 | Abb Ab | Control of active power in a high voltage direct current transmission system |
| WO2007033620A1 (en) * | 2005-09-22 | 2007-03-29 | Siemens Aktiengesellschaft | Control method for transmitting direct current |
| CN1808158A (en) * | 2005-12-15 | 2006-07-26 | 南京南瑞继保电气有限公司 | Pole block comprehensive distinguishing method for DC power transmission system |
| CN102361329A (en) * | 2011-10-18 | 2012-02-22 | 山东电力研究院 | Modeling method for performing dynamic characteristic research on hybrid alternating current/direct current (AC/DC) transmission system |
| CN102945004A (en) * | 2012-12-11 | 2013-02-27 | 上海市电力公司 | Real-time digital simulation model for multi-infeed direct current power transmission system |
| CN203191715U (en) * | 2013-03-29 | 2013-09-11 | 国家电网公司 | Current margin compensation simulation device |
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