CN101673951B - Thyristor valve triggering and monitoring system - Google Patents

Thyristor valve triggering and monitoring system Download PDF

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Publication number
CN101673951B
CN101673951B CN2009102357949A CN200910235794A CN101673951B CN 101673951 B CN101673951 B CN 101673951B CN 2009102357949 A CN2009102357949 A CN 2009102357949A CN 200910235794 A CN200910235794 A CN 200910235794A CN 101673951 B CN101673951 B CN 101673951B
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China
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cpu
monitoring
thyristor valve
trigger
control
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Expired - Fee Related
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CN2009102357949A
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CN101673951A (en
Inventor
昃萌
任孟干
柴斌
袁洪亮
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
China EPRI Science and Technology Co Ltd
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China Electric Power Research Institute Co Ltd CEPRI
China EPRI Science and Technology Co Ltd
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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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation

Abstract

The invention provides a thyristor valve triggering and monitoring system and relates to reconfigurable static var compensator (SVC)/DC ice-melting combined device. The system mainly comprises two parts of a triggering part and a monitoring part, and is mainly functionalized in that the triggering and the monitoring functions of a thyristor valve can be completed when the reconfigurable device runs under the SVC or DC ice-melting condition. As the system keeps in touch with the outside only by light signals, the precision is high, and the anti-interference capacity is strong, thereby meeting the requirement of the system.

Description

A kind of thyristor valve trigger and monitoring system
Technical field
The invention belongs to electric power system technology of transmission of electricity field, be specifically related to a kind of thyristor valve trigger and monitoring system, it is used for reconfigurable static reactive-power compensation and repays device (SVC)/DC de-icing composite apparatus.
Background technology
For solving the heavy losses that the powerline ice-covering disaster causes for electric power system, national economy and even the whole society, carried out a large amount of analysis and research work about the transmission line ice-melt both at home and abroad.Wherein consistent think adopt DC ice melting scheme to have application space very widely based on the rectifier technology, its cardinal principle is as load with the icing circuit, one end is carried out short circuit, apply DC power supply at the other end, provide big direct current to come heating line with low voltage, the circuit icing is melted.
All less in view of time and frequency that ice damage takes place, special-purpose DC ice melting equipment economy is relatively poor.For improving usage ratio of equipment, developed and had DC ice melting and two kinds of reconfigurable power electronic equipments of purposes of static reactive, i.e. restructural type SVC/ DC de-icing composite apparatus concurrently.As required,, can make things convenient for to such an extent that carry out the change of operational mode, thereby improve the utilance and the economic benefit of device greatly through simple main electrical scheme reconstruct.
Thyristor valve trigger of the present invention and monitoring system are designed at two kinds of operating conditions of restructural type SVC/ DC de-icing composite apparatus, and assurance device can both be stablized reliability service under two kinds of different operating conditions.
The triggering of thyristor valve and monitoring system belong to the electrical secondary system device; therefore and its triggering and monitoring target are to be on high-tension side thyristor valve body, and what adopt is that optical cable connects, and insulate on electric; not only guarantee antijamming capability, also protected the fail safe of device greatly.SVC is the category that belongs to ac transmission, and what DC ice melting adopted is rectifier structure, promptly belongs to the category of direct current transportation, because the operational mode difference is huge, so the triggering of thyristor valve and Monitoring System have suitable difficulty.
Summary of the invention
Specifically, the purpose of this invention is to provide the strong restructural type SVC/ DC de-icing composite apparatus of a kind of high accuracy, antijamming capability with thyristor valve trigger and monitoring system.This system can satisfy the accurate triggering and monitoring in real time of the thyristor valve of SVC/ DC de-icing composite apparatus, and monitoring result is real-time transmitted to workstation computer by network shows.Simultaneously, this system also has from monitoring and warning function, when thyristor valve body breaks down, can start the corresponding protection measure.
For achieving the above object, the present invention takes following design:
A kind of thyristor valve trigger and monitoring system, be used for reconfigurable static reactive-power compensation and repay device (SVC)/DC de-icing composite apparatus, it is characterized in that comprising the dual power supply redundancy unit, trigger element, CPU (CPU), control protection A system, control protection B system, the A system interface unit, the B system interface unit, input-output unit and monitoring means, it is characterized in that described dual power supply redundancy unit provides working power for whole device, CPU (CPU) is connected with control protection B system with control protection A system respectively with the B system interface unit by the A system interface unit, CPU (CPU) output signal is to trigger element, CPU (CPU) and input-output unit, and monitoring means connects and carries out two-way communication; CPU (CPU), control protection A system, control protection B system, A system interface unit and B system interface unit are responsible for the control of whole triggering and monitoring system together:
(1) the A system interface unit is monitored in real time to the control signal of control protection A system transmission, have self-monitoring function concurrently, and give workstation computer by Network Transmission with monitoring information, the B system interface unit is monitored in real time to the control signal of control protection B system transmission, have self-monitoring function concurrently, and give workstation computer by Network Transmission monitoring information;
(2) CPU (CPU) will be controlled protection A system and control and protect the trigger command of B system to be converted into the instruction that thyristor valve body can be resolved;
(3) CPU (CPU) reads the repayment signal of thyristor valve body in real time, after resolving coding, give workstation computer by network delivery, CPU (CPU) sends trigger command to trigger element, finish the transmission of trigger command by trigger element, the input and the output of the basic status information of finishing thyristor valve trigger and monitoring system between CPU (CPU) and the input-output unit, CPU (CPU) reads the thyristor valve state information of monitoring means by control command, CPU (CPU) transmitting control commands is given monitoring means, and monitoring means sends to CPU element to the thyristor valve state information.
Wherein, this system has self-protection function; when catastrophe failure appears in thyristor valve body; then this system can start corresponding defence program; it sends the request trip signal to control protection A system and control protection B system; finish switch trip by control protection A system and control protection B system, to reach the purpose of protection thyristor valve.
Wherein, this system's maximum can trigger and monitor 48 layers of antiparallel thyristor simultaneously, therefore can carry out flexible configuration to the number that triggers and monitor between 1～48 as required.
Wherein, the external connection of this system is all carried out transmission signals by optical fiber or optical cable, has splendid antijamming capability and insulating capacity, can be fit to the application scenario of high pressure/superhigh pressure.
The invention has the beneficial effects as follows:
1. can compatible SVC and the ice-melt situation under, the triggering of thyristor valve and monitoring requirement;
2. the function and the network transmission function that possess the real-time monitoring of thyristor valve;
3. possesses self-monitoring function;
4. double control system design can realize initiatively switching;
5. duplicate supply power supply design has the characteristics of stand-by heat, can realize seamless switching;
6. all be that optical cable connects to external signal, the precision height has extraordinary antijamming capability and insulating capacity;
7. but triggering and monitoring channel flexible configuration.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is the formation schematic diagram of valve triggering of the present invention and monitoring system;
Fig. 2 is a dual power supply redundancy project organization schematic diagram of the present invention;
Fig. 3 is a trigger element structural representation of the present invention;
Fig. 4 is a CPU element structural representation of the present invention;
Fig. 5 is CPU element of the present invention and A system interface unit and the external connection diagram of B system interface unit;
Fig. 6 is a monitoring means structural representation of the present invention.
Embodiment
A kind of thyristor valve trigger provided by the invention and monitoring system relate to reconfigurable static reactive-power compensation and repay device (SVC)/DC de-icing composite apparatus.This system mainly is divided into two parts, triggering part and monitoring part.Major function is to finish triggering and the monitoring function that reconfigurable device operates in the thyristor valve under static var compensator (SVC) or the DC ice melting operating mode.
Triggering part is the trigger command that sends according to control system, resolves coding, and through opto-electronic conversion, by optical cable trigger command is sent to high-order electron plate on the thyristor valve body, finishes the triggered as normal of thyristor valve.
The monitoring part is the repayment signal that receives the high-order electron plate of thyristor valve by optical cable, and this signal and thyristor are to concern one to one, can reflect the state of thyristor in real time.The monitoring part sends to workstation computer by network and shows in real time after this signal is resolved.If thyristor valve body has fault, then can start safeguard measure.
Thyristor valve trigger and monitoring system also have self-monitoring function, if self device has problem, and can be by lighting alarm lamp and indicating by the mode that network sends message.
Thyristor valve trigger and monitoring system have the dual system characteristics of stand-by heat each other, and when a cover system went wrong, thyristor triggered with monitoring system and initiatively switches on the intact cover system, does not influence the work of whole device.
Because this system gets in touch by light signal, so precision height, antijamming capability are strong, satisfy the requirement of system.
As shown in Figure 1, the present invention includes dual power supply redundancy unit 1, trigger element 2, CPU (CPU) 3, control protection A system 4, control protection B system 5, A system interface unit 6, B system interface unit 7, input-output unit 8 and monitoring means 9.The function of thyristor valve trigger and monitoring system is no matter device operates in SVC pattern or DC ice melting pattern, can both realize the correct triggering of thyristor valve and monitoring in real time.
Dual power supply redundancy design cell 1 among Fig. 1, its concrete formation as shown in Figure 2.Two DC power supplier are independently mutually arranged, and it is input as mutually independently direct current 220V, and the output of two power supplys is carried out parallel connection through after the Schottky diode, provides the Vcc power supply signal to other unit.This kind design can guarantee not influence the operate as normal of thyristor valve trigger and monitoring system when one tunnel DC power supply fault.
Trigger element 2 among Fig. 1, its concrete formation as shown in Figure 3.The triggering signal of CPU element output thyristor valve, but this signal energy is less, and deficiency is so that the emission shaven head operate as normal of trigger element, therefore, need that at first this signal is carried out one-level and drive, be delivered to electric light conversion loop afterwards again, generate the needed light signal of thyristor valve trigger.Each trigger element comprises 12 tunnel triggering signals, 6 forwards, and 6 are oppositely.The sum of trigger element is configurable, can trigger 48 pairs simultaneously at most, i.e. 96 thyristors.
CPU element 3 among Fig. 1, Fig. 1 (6) is that A system interface unit and Fig. 1 (7) they are the B system interface unit, johning knot composition such as Fig. 4 between the three, main signal transmission diagram is as shown in Figure 5.This part is the core of thyristor valve trigger and monitoring system.Control unit circuit adopts the CPLD+DSP structure.CPLD is responsible for logic control, and DSP is responsible for Network Transmission and communication.This part receives the control signal from control protection A system and control protection B system.In Fig. 4, CPLD1 is responsible for controlling the signal processing of protection A system, and CPLD2 is responsible for controlling the signal processing of protection B system, and CPLD3 receives the result of CPLD1 and CPLD2, and comprehensively judges, confirms to carry out the order of which cover system.That cover system of carrying out is a main system, and an other cover then is a back-up system.When main system breaks down, back-up system is switched to main system carry out a cover system of the indication fault of reporting to the police simultaneously.CPLD3 returns the system information of CPLD1 and CPLD2 correspondence, outputs to control protection A system and control protection B system by CPLD1 and CPLD2 by control protection A system and control protection B system interface unit.CPLD3 passes to CPLD4 with the forward trigger command, and reverse trigger command is passed to CPLD5.The CPLD4 major function is that the forward trigger command is encoded to the form output that the high-order electron plate of thyristor valve body can be resolved, and the CPLD5 major function is that reverse trigger command is encoded to the form output that the high-order electron plate of thyristor valve body can be resolved.CPLD1 and CPLD2 also monitor the signal of self, promptly have self-monitoring function, and monitoring result is passed to CPLD3.CPLD3 will control the state information of protection A system and control protection B system and feed back to the DSP unit from monitoring information, and the major function of DSP unit is to finish and the communication of workstation computer and the processing of valve state information.On the one hand the DSP unit triggers operation information with monitoring system with thyristor and sends to workstation computer by network and show; parse thyristor valve body when catastrophe failure is arranged by the valve state information as DSP on the other hand; can start application tripping operation program; and signal is exported to control protection A system protect the B system with control; thereby reach the purpose of protection thyristor valve body, promptly have self-protection function.The function of CPLD6 is to finish netconfig function.
Input-output unit 8 among Fig. 1, its input and output connected mode all is to pass through optical fiber.Identical with the light input and output of routine.
Monitoring means 9 among Fig. 1, concrete formation as shown in Figure 6.Each monitoring means can be finished the monitoring of 12 road light repayment, repays 6 the tunnel comprising forward, oppositely repays 6 the tunnel.The monitoring means number can dispose, and maximum configurable 8 monitoring means are finished the monitoring of 96 road light repayment.CPLD1 is responsible for forward 6 road light repayment monitoring, and CPLD2 is responsible for the monitoring of reverse 6 road light repayment.Signal transmission between monitoring means and the CPU element is transmitted by control bus and valve state information bus.Control bus is the address that is used for selecting the valve state information that will read, and valve state information bus is used for transmitting the state information of the valve that the Be Controlled bus chooses.
Thyristor valve trigger that this is routine and monitoring system, the thyristor that goes for most electric power systems triggers and monitoring, as SVC, rectifier etc.Connection is optical fiber to this device to external signal, can satisfy the insulating requirements and the anti-interference requirement of high pressure/extra high voltage system.
Invention has been described according to specific exemplary embodiment herein.It will be conspicuous carrying out suitable replacement to one skilled in the art or revise under not departing from the scope of the present invention.Exemplary embodiment only is illustrative, rather than to the restriction of scope of the present invention, scope of the present invention is by appended claim definition.

Claims (4)

1. thyristor valve trigger and monitoring system, be used for reconfigurable static reactive-power compensation and repay device (SVC)/DC de-icing composite apparatus, it is characterized in that comprising dual power supply redundancy unit (1), trigger element (2), CPU (CPU) (3), control protection A system (4), control protection B system (5), A system interface unit (6), B system interface unit (7), input-output unit (8) and monitoring means (9), it is characterized in that described dual power supply redundancy unit (1) provides working power for whole device, CPU (CPU) (3) is connected with control protection B system (5) with control protection A system (4) respectively with B system interface unit (7) by A system interface unit (6), CPU (CPU) (3) output signal arrives trigger element (2), CPU (CPU) (3) and input-output unit (8), and monitoring means (9) connects and carries out two-way communication; CPU (CPU) (3), control protection A system, control protection B system, A system interface unit (6) and B system interface unit (7) are responsible for the control of whole triggering and monitoring system together:
(1) A system interface unit (6) is monitored in real time to the control signal of control protection A system transmission, have self-monitoring function concurrently, and give workstation computer by Network Transmission with monitoring information, B system interface unit (7) is monitored in real time to the control signal of control protection B system transmission, have self-monitoring function concurrently, and give workstation computer by Network Transmission monitoring information;
(2) CPU (CPU) (3) will be controlled protection A system (4) or control and protect the trigger command of B system (5) to be converted into the instruction that thyristor valve body can be resolved;
(3) CPU (CPU) (3) reads the repayment signal of thyristor valve body in real time, after resolving coding, give workstation computer by network delivery, CPU (CPU) (3) sends trigger command to trigger element (2), finish the transmission of trigger command by trigger element (2), between CPU (CPU) (3) and input-output unit (8), finish the input and the output of the basic status information of thyristor valve trigger and monitoring system, CPU (CPU) reads the thyristor valve state information of monitoring means by control command, CPU (CPU) transmitting control commands is given monitoring means (9), and monitoring means (9) sends to CPU element to the thyristor valve state information.
2. thyristor valve trigger according to claim 1 and monitoring system; it is characterized in that: this system has self-protection function; when catastrophe failure appears in thyristor valve body; then this system can start corresponding defence program; it sends the request trip signal to control protection A system and control protection B system; finish switch trip by control protection A system and control protection B system, to reach the purpose of protection thyristor valve.
3. thyristor valve trigger according to claim 2 and monitoring system, it is characterized in that: this system's maximum can trigger and monitor 48 pairs of antiparallel thyristors simultaneously, therefore can carry out flexible configuration to the thyristor number that triggers and monitor between 1～48 as required.
4. thyristor valve trigger according to claim 3 and monitoring system is characterized in that: the external connection of this system is all carried out transmission signals by optical fiber or optical cable, has antijamming capability and insulating capacity, can be fit to the application scenario of high pressure/superhigh pressure.
CN2009102357949A 2009-10-15 2009-10-15 Thyristor valve triggering and monitoring system Expired - Fee Related CN101673951B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101841157A (en) * 2010-04-29 2010-09-22 洛阳润星电子科技有限公司 Intelligent electric power regulator and method for uniformly allocating power thereof
CN102332725B (en) * 2010-07-12 2013-11-27 北京博润新能电力科技有限公司 High potential gate control device for series thyristor valve block in SVC (Static Var Compensator)
CN102354942B (en) * 2011-10-20 2014-08-13 贵州电网公司输电运行检修分公司 High-pressure DC (direct current) ice melting device
CN102412544B (en) * 2011-12-09 2015-07-15 贺长宏 Power-uninterrupted ice melting and SVG-type reactive static compensation compound device and use method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101020425A (en) * 2007-03-28 2007-08-22 中国南车集团株洲电力机车研究所 Mixed static synchronous reactive compensator
CN101316033A (en) * 2008-06-11 2008-12-03 国网武汉高压研究院 High-capacity direct current de-icing device
CN101369723A (en) * 2008-10-08 2009-02-18 中国电力科学研究院 Protection system for reconfigurable static reactive-power compensation/DC de-icing composite apparatus
CN101387885A (en) * 2008-10-15 2009-03-18 中国电力科学研究院 Reconfigurable static reactive compensation/DC deicing composite apparatus monitoring system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101020425A (en) * 2007-03-28 2007-08-22 中国南车集团株洲电力机车研究所 Mixed static synchronous reactive compensator
CN101316033A (en) * 2008-06-11 2008-12-03 国网武汉高压研究院 High-capacity direct current de-icing device
CN101369723A (en) * 2008-10-08 2009-02-18 中国电力科学研究院 Protection system for reconfigurable static reactive-power compensation/DC de-icing composite apparatus
CN101387885A (en) * 2008-10-15 2009-03-18 中国电力科学研究院 Reconfigurable static reactive compensation/DC deicing composite apparatus monitoring system

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