CN103257588A - Tapping point position simulation device - Google Patents
Tapping point position simulation device Download PDFInfo
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- CN103257588A CN103257588A CN2013101092082A CN201310109208A CN103257588A CN 103257588 A CN103257588 A CN 103257588A CN 2013101092082 A CN2013101092082 A CN 2013101092082A CN 201310109208 A CN201310109208 A CN 201310109208A CN 103257588 A CN103257588 A CN 103257588A
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Abstract
The invention provides a tapping point position simulation device, belongs to the field of electrical measurement, and particularly relates to a testing device used for a simulation study of a direct current control protection system of high-voltage direct current transmission equipment. A tapping point signal end is connected to a first phase inverter and a second phase inverter through a tapping point signal forming module. An output end of the first phase inverter is connected to an input end of a first and gate, and a tapping point rising signal end is connected to the other input end of the first and gate. An output end of the second phase inverter is connected to an input end of a second and gate, and a tapping point falling signal end is connected to the other input end of the second and gate. An output end of the first and gate and an output end of the second and gate are connected with a plus counting input end of a two-way counter and a subtraction counting input end of the two-way counter respectively, and an output end of the two-way counter forms a tapping point signal end. The device can truly simulate and reflect the running state of a direct current protection device, and provide corresponding simulation results for the study or design of the direct current control protection device.
Description
Technical field
The invention belongs to the electric measurement field, relate in particular to a kind of tap joint position simulation testing device of the DC control protection system simulation research for high-voltage direct-current transmission system.
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 tap joint position, truly the tap joint position running status of simulated high-pressure direct current transportation DC control protection system.
Summary of the invention
The objective of the invention is to provide a kind of tap joint position simulator; it can simulate the tap joint position state of reflection D.C. high voltage transmission DC control protection system truly; for the tap joint position research of DC control protective device or design provide corresponding simulation result, solve to the tap joint position research of DC control protective device or design the technical matters that verification platform is provided.
The present invention solves the problems of the technologies described above the technical scheme that adopts:
A kind of tap joint position simulator is arranged in the change of current variation apparatus for controlling connection of DC control protection system, is used for the emulation of the DC control protection system of high-voltage direct-current transmission system, it is characterized in that:
Described tap joint position simulator comprises that the tap signal forms module, first phase inverter, second phase inverter, first with door, second with door and bi-directional counter;
The tap signal end forms module by described tap signal, is connected to the input end of described first phase inverter and second phase inverter; The output terminal of described first phase inverter, be connected to described first with the door an input end; Tap rising signals end be connected to described first with the door another input end; The output terminal of described second phase inverter, be connected to described second with the door an input end; Tap dropping signal end be connected to described second with the door another input end;
Described first with door and second and output terminal, be connected respectively to plus coujnt input end and the subtraction counting input end of described bi-directional counter, the output terminal of described bi-directional counter constitutes the tap signal end of described tap joint position simulator.
A kind of preferable technical scheme of tap joint position simulator of the present invention is characterized in that described tap signal forms module and comprises first delay element, second delay element, first comparer, second comparer, or door and timer; The tap signal end is connected to an input end described or door successively by described first delay element and first comparer; The tap signal end is connected to another input end described or door successively by described second delay element and second comparer, and output terminal described or door is connected to the input end of described timer; The output terminal of described timer constitutes the output terminal that described tap signal forms module, is connected to described first phase inverter and second phase inverter.
The invention has the beneficial effects as follows:
1. the tap joint position running status of DC control protective device can be simulated, be reflected to tap joint position simulator of the present invention truly, for research or the design of DC control protective device provides corresponding simulation result;
2. tap joint position 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 theory diagram for the simulator of DC control protection system;
Fig. 2 is the circuit theory diagrams of tap joint position 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.2410-tap signal forms module, 2411-first delay element, 2412-second delay element, the 2413-timer, 2421-first comparer, 2422-second comparer, 2431-or door, 2432-first phase inverter, 2433-second phase inverter, 2434-first and door, 2435-second and door, 2441-bi-directional counter, DEC_TC-tap dropping signal end, INC_TC-tap rising signals end, TAPS1-tap signal 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 tap joint position simulator of the present invention, is connected in the change of current variation apparatus for controlling connection 240 of DC control protection system, is used for the emulation of the DC control protection system of high-voltage direct-current transmission system.One of basic functional units of the change of current variation apparatus for controlling connection 240 that tap joint position simulator of the present invention is the DC control protection system.The simulator of the DC control protection system of high-voltage direct-current transmission system as shown in Figure 1.Converter power transformer tap control device 240 is links that are used for adjusting automatically converter power transformer 120 on-load voltage regulation tap joint position in the DC power transmission control system, its objective is that the pass angle of rupture (extinguish angle) for the triggering angle of keeping rectifier or inversion side in the scope of appointment, perhaps keeps DC voltage or valve winding in converter transformer no-load voltage in the scope of appointment.
As shown in Figure 2, tap joint position simulator of the present invention comprises that the tap signal forms module 2410, the first phase inverters 2432, the second phase inverters 2433, the first and door 2434, the second and door 2435 and bi-directional counter 2441;
Tap signal end TAPS1 forms module 2410 by the tap signal, is connected to the input end of first phase inverter 2432 and second phase inverter 2433; The output terminal of first phase inverter 2432, be connected to first with a door input end of 2434; Tap rising signals end INC_TC be connected to first with door another input end of 2434; The output terminal of second phase inverter 2433, be connected to second with a door input end of 2435; Tap dropping signal end DEC_TC be connected to second with door another input end of 2435;
First with door 2434 and second with door 2435 output terminal, be connected respectively to plus coujnt input end and the subtraction counting input end of bi-directional counter 2441, the output terminal of bi-directional counter 2441, the tap signal end TAPS1 of formation tap joint position simulator.
Embodiment according to tap joint position simulator of the present invention shown in Figure 2, the tap signal forms module 2410 shown in the frame of broken lines zone among Fig. 2, comprise first delay element 2411, second delay element 2412, first comparer 2421, second comparer 2422, or door 2431 and timer 2 413; Tap signal end TAPS1 is successively by first delay element 2411 and first comparer 2421, is connected to or an input end of door 2431; Tap signal end TAPS1 is successively by second delay element 2412 and second comparer 2422, be connected to or another input end of door 2431, or the output terminal of door 2431 is connected to the input end of timer 2 413; The output terminal of timer 2 413 constitutes the output terminal that the tap signal forms module 2410, is connected to first phase inverter 2432 and second phase inverter 2433.
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. a tap joint position simulator is arranged in the change of current variation apparatus for controlling connection of DC control protection system, is used for the emulation of the DC control protection system of high-voltage direct-current transmission system, it is characterized in that:
Described tap joint position simulator comprises that the tap signal forms module, first phase inverter, second phase inverter, first with door, second with door and bi-directional counter;
The tap signal end forms module by described tap signal, is connected to the input end of described first phase inverter and second phase inverter; The output terminal of described first phase inverter, be connected to described first with the door an input end; Tap rising signals end be connected to described first with the door another input end; The output terminal of described second phase inverter, be connected to described second with the door an input end; Tap dropping signal end be connected to described second with the door another input end;
Described first with door and second and output terminal, be connected respectively to plus coujnt input end and the subtraction counting input end of described bi-directional counter, the output terminal of described bi-directional counter constitutes the tap signal end of described tap joint position simulator.
2. tap joint position simulator according to claim 1 is characterized in that described tap signal forms module and comprises first delay element, second delay element, first comparer, second comparer, or door and timer; The tap signal end is connected to an input end described or door successively by described first delay element and first comparer; The tap signal end is connected to another input end described or door successively by described second delay element and second comparer, and output terminal described or door is connected to the input end of described timer; The output terminal of described timer constitutes the output terminal that described tap signal forms module, is connected to described first phase inverter and second phase inverter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101092082A CN103257588A (en) | 2013-03-29 | 2013-03-29 | Tapping point position simulation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101092082A CN103257588A (en) | 2013-03-29 | 2013-03-29 | Tapping point position simulation device |
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| CN103257588A true CN103257588A (en) | 2013-08-21 |
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| CN2013101092082A Pending CN103257588A (en) | 2013-03-29 | 2013-03-29 | Tapping point position simulation device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427238A (en) * | 2011-10-26 | 2012-04-25 | 中国南方电网有限责任公司超高压输电公司 | Method for adjusting gear signals of tap switch during parallel running of different converter transformers |
| CN203133505U (en) * | 2013-03-29 | 2013-08-14 | 国家电网公司 | Tap position simulator |
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2013
- 2013-03-29 CN CN2013101092082A patent/CN103257588A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427238A (en) * | 2011-10-26 | 2012-04-25 | 中国南方电网有限责任公司超高压输电公司 | Method for adjusting gear signals of tap switch during parallel running of different converter transformers |
| CN203133505U (en) * | 2013-03-29 | 2013-08-14 | 国家电网公司 | Tap position simulator |
Non-Patent Citations (3)
| Title |
|---|
| 张跃锋等: "交直流混合输电系统的换流变压器分接头控制", 《中国电力》, vol. 41, no. 4, 30 April 2008 (2008-04-30), pages 20 - 24 * |
| 陈琦: "高压直流输电系统的实时数字仿真研究", 《中国优秀博硕士学位论文全文数据库（硕士）工程科技II辑》, no. 4, 15 December 2004 (2004-12-15), pages 042 - 303 * |
| 马聪: "高压直流输电控制系统仿真研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》, no. 5, 15 May 2012 (2012-05-15), pages 042 - 545 * |
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Application publication date: 20130821 |