CN103257590B - A kind of trigger pulse closed-loop circuit control imitation device - Google Patents
A kind of trigger pulse closed-loop circuit control imitation device Download PDFInfo
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- CN103257590B CN103257590B CN201310109359.8A CN201310109359A CN103257590B CN 103257590 B CN103257590 B CN 103257590B CN 201310109359 A CN201310109359 A CN 201310109359A CN 103257590 B CN103257590 B CN 103257590B
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Abstract
A kind of trigger pulse closed-loop circuit control imitation device, belong to electric measurement field, particularly relate to a kind of trigger pulse closed-loop circuit control imitation proving installation of the DC control and protection system simulation study for high-voltage direct-current transmission system, Trigger Angle command signal end by delay element, first rate limiter and trigonometric function element, is connected to the first extreme value selector switch successively; First extreme value selector switch is successively by the 3rd arithmetic arithmetic element, the second speed limiting device, the 4th arithmetical operation element, be connected to the 5th arithmetical operation element, again successively by third speed limiter, the 6th arithmetical operation element and the 4th speed limiting device, be connected to Trigger Angle command signal end, form closed loop current control linkage; Bound selects model calling to the bound input end of the 4th speed limiting device.This device can be simulated truly, reflect the running status of DC control protective device, for the research of DC control protective device or design provide corresponding simulation result.
Description
Technical field
The invention belongs to electric measurement field, particularly relate to a kind of trigger pulse closed-loop circuit control imitation proving installation of the DC control and protection system simulation study for high-voltage direct-current transmission system.
Background technology
The continuous growth of electricity needs result in the future development of transmission system to long distance, Large Copacity and high stability.Along with the construction project of the ultra-high voltage AC transmission engineering in each Grid and high voltage direct current transmission project constantly increases, 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 obvious multi-infeed DC, electric network composition is tight, between many ac and dc circuits, electrical distance is tightr, after extra-high voltage and the ultrahigh-voltage alternating-current system failure, easy initiation comprises many direct currents commutation failure simultaneously of high voltage direct current, and its rejuvenation of the commutation failure of multiple-circuit line will produce greater impact to AC system, if the recovery policy mismate of each straight-flow system, then also likely cause many direct currents that continuous print commutation failure occurs simultaneously, even cause direct current locking.There is bipolar locking in multiple-circuit line, a large amount of trend shifts or on a large scale by initiating system stable problem simultaneously.Reciprocation between this ac and dc systems brings huge challenge to 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 the reciprocation between ac and dc systems be tested to the stability of extra-high voltage alternating current-direct current series-parallel connection receiving end electrical network and be emulated, and with reference to test and simulation result, the result of research or design is verified, the stability of system is assessed.Chinese utility model patent " a kind of Multi-infeed HVDC transmission system real-timedigital simulation model " (utility model patent number: ZL201210532559.X Authorization Notice No.: CN102945004A) discloses Multi-infeed HVDC transmission system real-timedigital simulation model, it comprises the equivalent super high voltage direct current electricity transmission system of multiple parallel connection, 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, for the operation of control and protection current conversion station.By the control and protection that current conversion station control system and protection system are run current conversion station, after avoiding fault in ac transmission system, easily cause the impact that multiple-circuit line simultaneous faults and multiple-circuit line fault and rejuvenation thereof produce AC system.But this realistic model does not relate to the emulation that trigger pulse closed-loop circuit controls, cannot the trigger pulse closed-loop circuit controlling run state of simulated high-pressure direct current transportation DC control and protection system truly.
Summary of the invention
The object of the invention is to provide a kind of trigger pulse closed-loop circuit control imitation device; it can simulate the trigger pulse closed-loop circuit state of a control of reflection D.C. high voltage transmission DC control and protection system truly; trigger pulse closed-loop circuit control for DC control protective device studies or design provides corresponding simulation result, and the trigger pulse closed-loop circuit solved as DC control protective device controls research or designs the technical matters providing verification platform.
The present invention solves the problems of the technologies described above adopted technical scheme:
A kind of trigger pulse closed-loop circuit control imitation device, is arranged in the transverter trigger angle control device of DC control and protection system, for the emulation of the DC control and protection system of high-voltage direct-current transmission system, it is characterized in that:
Described trigger pulse closed-loop circuit control imitation device comprises delay element, first to the 7th arithmetical operation element, first to fourth speed limiting device, first extreme value selector switch, trigonometric function element, proportioning element, secondary extremal selector switch, first mode selector switch, integrator and bound select module; Trigger Angle command signal end by described delay element, first rate limiter and trigonometric function element, is connected to the first described extreme value selector switch successively; The output terminal of described first extreme value selector switch, successively by the 3rd arithmetic arithmetic element, the second speed limiting device, the 4th arithmetical operation element, be connected to an input end of the 5th arithmetical operation element, again successively by third speed limiter, the 6th arithmetical operation element and the 4th speed limiting device, be connected to Trigger Angle command signal end, form closed loop current control linkage; DC current signal, by the first described arithmetical operation element, is connected to an input end of the second arithmetical operation element; Rectification state signal end, by the control end of first mode selector switch, is connected to another input end of the second described arithmetical operation element; The output terminal of described second arithmetical operation element, by described proportioning element, be connected to another input end with the input end of described integrator and described 5th arithmetical operation element, the output terminal of described integrator, is connected to another input end of the 6th described arithmetical operation element; Described bound selects the bound output terminal of module, is connected respectively to the bound input end of described 4th speed limiting device.
The one preferably technical scheme of trigger pulse closed-loop circuit control imitation device of the present invention, is characterized in that described bound selects module to comprise the second to the 5th mode selection switch; Regulated voltage signal end and maximum Trigger Angle signal end, successively by the second mode selection switch and the 3rd mode selection switch, be connected to the maximum Trigger Angle signal end of inverter; Current control amplifier minimum signal end and regulated voltage signal end, successively by four-mode selector switch and the 5th mode selection switch, be connected to inverter minimum trigger angle signal end.
The invention has the beneficial effects as follows:
1. the trigger pulse closed-loop circuit controlling run state of DC control protective device can be simulated, be reflected to trigger pulse closed-loop circuit control imitation device of the present invention truly, for the research of DC control protective device or design provide corresponding simulation result;
2. trigger pulse closed-loop circuit control imitation device of the present invention has the advantage of cross-platform emulation testing, both can realize with actual components in true environment, can realize again in virtual environment with computer software;
Accompanying drawing explanation
Fig. 1 is the theory diagram of the simulator for DC control and protection system;
Fig. 2 is the circuit theory diagrams of trigger pulse closed-loop circuit control imitation device of the present invention.
The label of each parts in above figure: 100-high-voltage direct-current transmission system; 110-alternating current filter switching device; 120-converter power transformer; 130-thyristor converter device; 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-pole output control device; 260-overload control apparatus; 270-Reactive Power Control device, 300-DC system protection unit, 900-runs and controls workstation.2211 ~ 2217-first is to the 7th arithmetical operation element, 2220-bound selects module, 2221 ~ 2224-first to fourth speed limiting device, 2231-first extreme value selector switch, 2232-secondary extremal selector switch, 2241 ~ 2245-first is to the 5th mode selection switch, 2251-delay element, 2252-trigonometric function element, 2253-proportioning element, 2254-integrator, ALPHA_ORD-Trigger Angle command signal end, the maximum Trigger Angle signal end of ALPHA_MAX-, CCA_LIM-current control amplifier restricting signal end, CCA_N_MIN-current control amplifier minimum signal end, the maximum Trigger Angle signal end of INT_MAX-inverter, INT_MIN-inverter minimum trigger angle signal end, UD_VARC-DC voltage and angle reference value, OVL_ORD-superpotential restricting signal end, RECT-rectification state signal end, VCA_ORD-regulated voltage signal end.
Embodiment
In order to technique scheme of the present invention can be understood better, be explained in further detail below in conjunction with drawings and Examples.
Fig. 2 illustrates an embodiment of trigger pulse closed-loop circuit control imitation device of the present invention, is connected in the transverter trigger angle control device of DC control and protection system, for the emulation of the DC control and protection system of high-voltage direct-current transmission system.Trigger pulse closed-loop circuit control imitation device of the present invention is one of basic functional units of the transverter trigger angle control device 220 of DC control and protection system.The simulator of the DC control and protection system of high-voltage direct-current transmission system as shown in Figure 1.
As shown in Figure 2, trigger pulse closed-loop circuit control imitation device of the present invention comprises delay element 2251, first to the 7th arithmetical operation element 2211 ~ 2217, first to fourth speed limiting device 2221 ~ 2224, first extreme value selector switch 2231, trigonometric function element 2252, proportioning element 2253, secondary extremal selector switch 2232, first mode selector switch 2241, integrator 2254 and bound select module 2220; Trigger Angle command signal end by delay element 2251, first rate limiter 2221 and trigonometric function element 2252, is connected to the first extreme value selector switch 2231 successively; The output terminal of the first extreme value selector switch 2231, successively by the 3rd arithmetic arithmetic element 2213, second speed limiting device 2222, the 4th arithmetical operation element 2214, be connected to an input end of the 5th arithmetical operation element 2215, again successively by third speed limiter 2223, the 6th arithmetical operation element 2216 and the 4th speed limiting device 2224, be connected to Trigger Angle command signal end, form closed loop current control linkage; DC current signal, by the first arithmetical operation element 2211, is connected to an input end of the second arithmetical operation element 2212; Rectification state signal end, by the control end of first mode selector switch 2241, is connected to another input end of the second arithmetical operation element 2212; The output terminal of the second arithmetical operation element 2212, passing ratio element 2253, be connected to the input end of integrator 2254 and another input end of the 5th arithmetical operation element 2215, the output terminal of integrator 2254, is connected to another input end of the 6th arithmetical operation element 2216; Bound selects the bound output terminal of module 2220, is connected respectively to the bound input end of the 4th speed limiting device 2224.
The embodiment of the trigger pulse closed-loop circuit control imitation device of the present invention according to Fig. 2, bound selects module 2220 as shown in the dotted line frame region in Fig. 2, comprises the second to the 5th mode selection switch 2242 ~ 2245; Regulated voltage signal end VCA_ORD and maximum Trigger Angle signal end ALPHA_MAX, successively by the second mode selection switch 2242 and the 3rd mode selection switch 2243, is connected to inverter maximum Trigger Angle signal end INT_MAX; Current control amplifier minimum signal end CCA_N_MIN and regulated voltage signal end VCA_ORD, successively by four-mode selector switch 2244 and the 5th mode selection switch 2245, is connected to inverter minimum trigger angle signal end INT_MIN.
Those of ordinary skill in the art will be appreciated that; above embodiment is only used to technical scheme of the present invention is described; and be not used as limitation of the invention; any the above embodiment is done based on connotation of the present invention change, modification, all will drop in the protection domain of claim of the present invention.
Claims (2)
1. a trigger pulse closed-loop circuit control imitation device, is arranged in the transverter trigger angle control device of DC control and protection system, for the emulation of the DC control and protection system of high-voltage direct-current transmission system, it is characterized in that:
Described trigger pulse closed-loop circuit control imitation device comprises delay element, first to the 7th arithmetical operation element, first to fourth speed limiting device, first extreme value selector switch, trigonometric function element, proportioning element, secondary extremal selector switch, first mode selector switch, integrator and bound select module; Trigger Angle command signal end by described delay element, first rate limiter and trigonometric function element, is connected to the first described extreme value selector switch successively; The output terminal of described first extreme value selector switch, successively by the 3rd arithmetic arithmetic element, the second speed limiting device, the 4th arithmetical operation element, be connected to an input end of the 5th arithmetical operation element, again successively by third speed limiter, the 6th arithmetical operation element and the 4th speed limiting device, be connected to Trigger Angle command signal end, form closed loop current control linkage; DC current signal, by the first described arithmetical operation element, is connected to an input end of the second arithmetical operation element; Rectification state signal end, by the control end of first mode selector switch, is connected to another input end of the second described arithmetical operation element; The output terminal of described second arithmetical operation element, by described proportioning element, be connected to another input end with the input end of described integrator and described 5th arithmetical operation element, the output terminal of described integrator, is connected to another input end of the 6th described arithmetical operation element; Described bound selects the bound output terminal of module, is connected respectively to the bound input end of described 4th speed limiting device.
2. trigger pulse closed-loop circuit control imitation device according to claim 1, is characterized in that described bound selects module to comprise the second to the 5th mode selection switch; Regulated voltage signal end and maximum Trigger Angle signal end, successively by the second mode selection switch and the 3rd mode selection switch, be connected to the maximum Trigger Angle signal end of inverter; Current control amplifier minimum signal end and regulated voltage signal end, successively by four-mode selector switch and the 5th mode selection switch, be connected to inverter minimum trigger angle signal end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310109359.8A CN103257590B (en) | 2013-03-29 | 2013-03-29 | A kind of trigger pulse closed-loop circuit control imitation device |
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| CN201310109359.8A CN103257590B (en) | 2013-03-29 | 2013-03-29 | A kind of trigger pulse closed-loop circuit control imitation device |
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| CN103257590B true CN103257590B (en) | 2015-12-16 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0280382A2 (en) * | 1987-02-27 | 1988-08-31 | ABB Power T&D Company Inc. | Inverter control method and apparatus |
| GB2295506A (en) * | 1994-11-24 | 1996-05-29 | Gec Alsthom Ltd | HVDC converter control |
| CN101577423A (en) * | 2009-06-18 | 2009-11-11 | 山东大学 | Method and device for inhibiting electromagnetic coupling of AC lines on adjacent DC lines |
| CN102122880A (en) * | 2011-02-19 | 2011-07-13 | 中国电力科学研究院 | Method for integrating high-voltage direct current transmission engineering equipment |
| CN203133511U (en) * | 2013-03-29 | 2013-08-14 | 国家电网公司 | Trigger-pulse closed-loop current control simulator |
-
2013
- 2013-03-29 CN CN201310109359.8A patent/CN103257590B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0280382A2 (en) * | 1987-02-27 | 1988-08-31 | ABB Power T&D Company Inc. | Inverter control method and apparatus |
| GB2295506A (en) * | 1994-11-24 | 1996-05-29 | Gec Alsthom Ltd | HVDC converter control |
| CN101577423A (en) * | 2009-06-18 | 2009-11-11 | 山东大学 | Method and device for inhibiting electromagnetic coupling of AC lines on adjacent DC lines |
| CN102122880A (en) * | 2011-02-19 | 2011-07-13 | 中国电力科学研究院 | Method for integrating high-voltage direct current transmission engineering equipment |
| CN203133511U (en) * | 2013-03-29 | 2013-08-14 | 国家电网公司 | Trigger-pulse closed-loop current control simulator |
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