CN102522825A - Control and protection system for flexible alternating-current power transmission device - Google Patents
Control and protection system for flexible alternating-current power transmission device Download PDFInfo
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Abstract
The invention provides a control and protection system for a flexible alternating-current power transmission device, and belongs to the field of alternating-current power transmission of power systems. The control and protection system comprises a protection device for finishing a control and protection algorithm and automatically controlling a clearance circuit breaker and a bypass circuit breaker to operate, a measurement and control device for acquiring and calculating electric amount information, and manually and remotely controlling and operating a disconnector and the bypass circuit breaker, an operation execution device for executing a control command to make the disconnector and the bypass circuit breaker operate, and a laser energy transmission device for supplying power to a platform measurement device. The control protection system has a small volume, low cost, high reliability and a compact structure, and is flexibly configured; mobile high-capacity storage equipment, such as a carrier-free (CF) storage card and the like, is configured to store fault recording data; extra recording equipment is not required to be configured; a user can locally set or cancel a record playback terminal according to a requirement; and the control and protection system is applicable to fixed series capacitance compensation devices (FSC), thyristor control series capacitance compensation devices (TCSC), series resonance type fault current limiter devices (FCL) and the like.
Description
Technical field
The invention belongs to the electric system AC electricity transmission field, be specifically related to a kind of control protection system of flexible AC transmission equipment.
Background technology
Fixed series capacitors compensation arrangement FSC (abbreviation fixed series compensation) is in the transmission line of alternation current, to seal in the power capacitor group, is used for the compensated line inductance, increases the equipment of circuit transmission capacity.In remote, large capacity transmission system, along with the increase of transmission distance, the circuit conveying capacity receives increasing restriction.Fixed series compensation can improve the stability of a system, practice thrift investment, is one of important means that improves ultra-high/extra-high voltage circuit conveying capacity.Because it has huge economic, the electric power system in countries in the world has obtained to use widely at present.
Thyristor controlled series capacitor compensation arrangement TCSC (abbreviation controlled series compensation) has increased the thyristor valve branch road on the basis of fixed series compensation; The thyristor control system is through changing the thyristor trigger angle; Regulate the equivalent impedance of fundamental frequency of controlled series compensation, realize dynamic control the transmission line impedance of fundamental frequency.Controlled series compensation has further improved the stability of electric power system when increasing the circuit conveying capacity, can play the effect that suppresses low frequency oscillations and subsynchronous resonance simultaneously.In addition, when the circuit failed because, controlled series compensation can get into thyristor by-pass capacitor group mode immediately, reduces the system short-circuit electric current effectively, improves the stability of a system.
Series resonance-type fault current limiter device FCL (abbreviation fault current limiter) is the series resonant circuit that in the transmission line of alternation current, seals in capacitor and reactor, when the conducting of line failure time control combinations brake tube, drops into the equipment of current-limiting reactor rapidly.Power frequency impedance when fault current limiter normally moves in system is zero, does not change system load flow and distributes, and when system's failed because, can significantly reduce the short circuit current of short dot and adjacent legs.Fault current limiter is installed in electric power system can be solved the problems that fault current exceeds standard and brings, improve the reliability and the power systems of grid equipment.At present, the 500kV series resonance-type fault current limiter device of domestic first cover independent research puts into operation in the bottle kiln electric substation of East China Power Grid.
The control protection system is the important component part of fixing/controlled series compensation device or fault current limiter; It mainly acts on: detect in service various to installing disadvantageous failure condition; The safe and stable operation of assurance device is isolated or the excision fault in the relevant protection of correct operation timely and accurately; Cooperate route protection simultaneously, with the miscellaneous equipment in the protection system.In addition, the control protection system can also realize functions such as electrical quantities measurement, running state monitoring, disconnecting link/breaker operator, failure wave-recording, man-machine interaction.The control protection system is monitored net and failure wave-recording net in the access station usually at local work station group screen after the stipulations conversion.Monitoring net and other online user of failure wave-recording are as controlling various state informations and the fault recorder data that protection system main website (being station level), protection substation, record marble station etc. can obtain device quickly and easily.
At present, the supplier of string benefit device mainly contains ABB, Siemens, GE and CLP Purui Technology Co., Ltd of China Electric Power Research Institute etc.The control protection system that existing string is mended device possesses following three characteristics mostly:
1. control protection equipment adopts the compositional model of " digital signal processor DSP/programmable logic controller (PLC) PLC+ industrial control computer " on hardware; In DSP or PLC, realize the control defencive function, carry out in industrial control computer that event information gathers, stipulations conversion etc.;
2. fault recorder data is generally held in the record wave device in the local work station, and the operations staff can check fault waveform, copy record ripple file on the record wave device;
3. control protection equipment inserts the monitoring net, and the record wave device inserts record ripple net, and control protection equipment carries out the stipulations conversion to device state information and recorder data respectively with the record wave device, and transformation result is sent to corresponding network.
There are following three main drawbacks in control protection system with above-mentioned characteristic:
1. the real-time of industrial control computer is not good enough with stability, in the control protection system, uses industrial control computer to influence the performance of string compensation covering device to a great extent.Industrial computer adopts non-real time operating system, and string is mended on-the-spot industrial computer system time and the bigger situation of control protection system time deviation of often occurring; In addition, the industrial computer internal structure is complicated, and its fan and hard disk are slewing, and the life-span is short, occurs various faults easily, will inevitably cause supervisory control system to lose efficacy in case break down;
2. control protection equipment does not possess the fault waveform memory function, if desired transient state record ripple, configuration record wave device in addition.At present, external supplier adopts the in addition integrated mode of record wave device of purchasing other producer mostly, and this mode can be brought the interface problem of record wave device and control protection system.In addition, though general record wave device record wave energy is powerful, not necessarily be applicable to the specific (special) requirements of fixed series compensation, controlled series compensation and fault current limiter;
3. the monitoring net is accomplished by two elements or equipment respectively with the stipulations conversion of record ripple net, has increased the system integration and testing of equipment, the cost of overhaul.
Summary of the invention
In order to overcome the deficiency of above-mentioned prior art; The present invention provides a kind of control protection system of AC transmission equipment; Real-time, the reliability and stability of control protection system have been improved; Simplify the record wave device and controlled being connected of protection system and external network, be applicable to fixed series capacitors compensation arrangement FSC, thyristor controlled series capacitor compensation arrangement TCSC and series resonance-type fault current limiter device FCL.
In order to realize the foregoing invention purpose, the present invention adopts following technical scheme:
A kind of control protection system of flexible AC transmission equipment, said system comprises protective device, accomplishes control protection algorithm, is used for the action of automatic control gap and bypass breaker; Measure and control device is used to obtain and calculates electric parameters information, and remote manual control operation disconnecting link and bypass breaker; The operation final controlling element, execution comes the control command of self-protecting device and measure and control device, makes the action of disconnecting link and bypass breaker; With the laser energy feeding device, for the platform measuring device provides power supply.
Event information, protection information and the recorder data that said control protective device produces shared through monitoring net, record ripple net, catch net in said protective device, measure and control device, man-machine interface, wave record playback terminal, station monitoring and control equipment and protection and record marble station.
Said man-machine interface makes user's real time monitoring string mend running status with record ripple/playback terminal, the investigation equipment fault.
Said monitoring net, record ripple net and catch net can be selected configuration according to user's request.
Said protective device and measure and control device adopt the pattern of " DSP+ embedded microprocessor " on hardware is realized.
Said protective device comprises LCDs and operation keyboard 1, switching value input unit, Data Receiving unit, protection computing unit, records ripple/playback unit, switching value output unit and communications management unit 1.
Said communications management unit 1 is interconnected through event information net 1 with said switching value input unit, Data Receiving unit, protection computing unit, record ripple/playback unit and switching value output unit; Inquire about above-mentioned each unit information, and running status, protection action event and the protection alarm event of each unit sent to the monitoring net.
Said event information net 1 is the message switching network between protective device internal switch amount input unit, Data Receiving unit, protection computing unit, record ripple/playback unit, switching value output unit and the communications management unit 1.
The event information that monitoring net share protect device produces is inserted at man-machine interface, station monitoring and control equipment and protection and record marble station.
Said communications management unit 1 is connected with operation keyboard 1 with said LCDs, consults event information, throws and to move back each defencive function, protection parameter and display device running status are set through the button of operation keyboard.
Said communications management unit 1 is connected with record ripple net with said record ripple/playback unit respectively, receives record ripple/playback unit waveform recorded data, and sends to record ripple net.
Said communications management unit 1 is furnished with pluggable CF card, stores record ripple/playback unit waveform recorded data.
Said communications management unit 1 receives the said waveform playback that the record ripple/the playback terminal issues and is transmitted to said record ripple/playback unit and is used for playback.
Said protective device, record ripple/playback terminal and protection and record marble station are inserted record ripple net and are shared Wave data.
Said measure and control device comprises LCDs and operation keyboard 2, switching value input unit, analog input unit, switching value output unit and communications management unit 2.
Said communications management unit 2 is interconnected through event information net 2 with said switching value input unit, analog input unit and switching value output unit, and the running status and the electric parameters of above-mentioned each unit of inquiry are calculated the result, and result of calculation is sent to the monitoring net.
Said result of calculation comprises effective value, active power, the reactive power harmonic content of line current and line voltage distribution.
Said event information net 2 is the message switching network between measure and control device internal switch amount input unit, analog input unit, switching value output unit and the communications management unit 2.
Man-machine interface, station monitoring and control equipment and protection and record marble station are inserted the monitoring net and are shared event information and the measurement data that measure and control device produces.
Fiber optical transceiver realizes that the optical cable between wall and the station level connects.
Compared with prior art, beneficial effect of the present invention is:
1. the application can satisfy the demand of control protection system to real-time, multitask property, the stability and the reliability of the operation of assurance system;
2. hardware configuration has been taken into account the modularization and the portability of software design, has shortened the software development time;
3. volume is little, in light weight, cost is low, reliability is high;
4. compact conformation, flexible configuration;
5. dispose LCDs and operation keyboard, can replace the various human-computer interaction functions of man-machine interaction computer realization of local work station, this mode both provided cost savings, and had improved the stability and the reliability of man-machine interface again;
6. dispose movably mass-memory unit,, be used to preserve fault recorder data like Compact Flash etc., needn't additional configuration record wave device, the user also can according to demand in the locality configuration or cancellation wave record playback terminal;
7. can be used for fixed series capacitors compensation arrangement FSC, thyristor controlled series capacitor compensation arrangement TCSC and series resonance-type fault current limiter device FCL etc.
Description of drawings
Fig. 1 is the schematic diagram of a kind of control protection system embodiment of AC transmission equipment;
Fig. 2 is the structural representation of control protective device and measure and control device.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Like Fig. 1, a kind of control protection system of flexible AC transmission equipment, said system comprises
The platform measuring device is used to obtain and transmits the in-site measurement data;
Protective device A and protective device B, redundant configuration is accomplished control protection algorithm each other, is used for the action of automatic control gap and bypass breaker;
Measure and control device is used to obtain and calculates electric parameters information, and remote manual control operation disconnecting link and bypass breaker;
The operation final controlling element, execution comes the control command of self-protecting device and measure and control device, makes the action of disconnecting link and bypass breaker;
With the laser energy feeding device, for said platform measuring device provides power supply.
Said platform measuring device is positioned at the outdoor high-voltage platform, and said protective device, measure and control device, operation final controlling element, laser energy feeding device are positioned at indoor.
Said protective device, measure and control device, man-machine interface, wave record playback terminal, station monitoring and control equipment and protection and record marble station through the monitoring net,, record ripple net, catch net share event information, protection information and the recorder data that said control protective device produces.
Said man-machine interface makes user's real time monitoring string mend running status with record ripple/playback terminal, the investigation equipment fault.
Said monitoring net, record ripple net and catch net can be selected configuration according to user's request.
Said protective device and measure and control device adopt the pattern of " DSP+ embedded microprocessor " on hardware is realized.
Like Fig. 2, said protective device comprises LCDs and operation keyboard 1, switching value input unit, Data Receiving unit, protection computing unit, records ripple/playback unit, switching value output unit and communications management unit 1.
Said communications management unit 1 is interconnected through event information net 1 with said switching value input unit, Data Receiving unit, protection computing unit, record ripple/playback unit and switching value output unit; Inquire about above-mentioned each unit information, and running status, protection action event and the protection alarm event of each unit sent to the monitoring net.
Said event information net 1 is the message switching network between protective device internal switch amount input unit, Data Receiving unit, protection computing unit, record ripple/playback unit, switching value output unit and the communications management unit 1.
The event information that monitoring net share protect device produces is inserted at man-machine interface, station monitoring and control equipment and protection and record marble station.
Said communications management unit 1 is connected with operation keyboard 1 with said LCDs, consults event information, throws and to move back each defencive function, protection parameter and display device running status are set through the button of operation keyboard.
Said communications management unit 1 is connected with record ripple net with said record ripple/playback unit respectively, receives record ripple/playback unit waveform recorded data, and sends to record ripple net.
Said communications management unit 1 is furnished with pluggable CF card (TF storage card or SD storage card), stores record ripple/playback unit waveform recorded data.
Said communications management unit 1 receives the said waveform playback that the record ripple/the playback terminal issues and is transmitted to said record ripple/playback unit and is used for playback.
Said protective device, record ripple/playback terminal and protection and record marble station are inserted record ripple net and are shared Wave data.
Said measure and control device comprises LCDs and operation keyboard 2, switching value input unit, analog input unit, switching value output unit and communications management unit 2.
Said communications management unit 2 is interconnected through event information net 2 with said switching value input unit, analog input unit and switching value output unit, and the running status and the electric parameters of above-mentioned each unit of inquiry are calculated the result, and result of calculation is sent to the monitoring net.
Said result of calculation comprises effective value, active power, the reactive power harmonic content of line current and line voltage distribution.
Said event information net 2 is the message switching network between measure and control device internal switch amount input unit, analog input unit, switching value output unit and the communications management unit 2.
Man-machine interface, station monitoring and control equipment and protection and record marble station are inserted the monitoring net and are shared event information and the measurement data that measure and control device produces.
Fiber optical transceiver realizes that the optical cable between wall and the station level connects.
Should be noted that: above embodiment only is used to explain the application's technical scheme but not limits it.Although the foregoing description specifies the application; The those of ordinary skill in affiliated field is to be understood that: still can make amendment or replacement on an equal basis to the embodiment of application; And do not break away from any modification of the application's spirit and scope or replacement on an equal basis, all should be encompassed in the application's the claim scope.
Claims (16)
1. the control protection system of a flexible AC transmission equipment, it is characterized in that: said system comprises
Protective device is accomplished control protection algorithm, is used for the action of automatic control gap and bypass breaker;
Measure and control device is used to obtain and calculates electric parameters information, and remote manual control operation disconnecting link and bypass breaker;
The operation final controlling element, execution comes the control command of self-protecting device and measure and control device, makes the action of disconnecting link and bypass breaker; With
The laser energy feeding device is for measurement mechanism provides power supply.
2. the control protection system of a kind of flexible AC transmission equipment according to claim 1 is characterized in that: event information, protection information and recorder data that said protective device, measure and control device, man-machine interface, wave record playback terminal, station monitoring and control equipment and protection and record marble station produce through monitoring net, record ripple net, the shared said protective device of catch net.
3. the control protection system of a kind of flexible AC transmission equipment according to claim 2 is characterized in that: said man-machine interface makes user's real time monitoring string mend running status with record ripple/playback terminal, the investigation equipment fault.
4. the control protection system of a kind of flexible AC transmission equipment according to claim 1 and 2 is characterized in that: said protective device comprises LCDs and operation keyboard (1), switching value input unit, Data Receiving unit, protection computing unit, record ripple/playback unit, switching value output unit and communications management unit (1).
5. the control protection system of a kind of flexible AC transmission equipment according to claim 4; It is characterized in that: said communications management unit (1) is interconnected through event information net (1) with said switching value input unit, Data Receiving unit, protection computing unit, record ripple/playback unit and switching value output unit; Inquire about above-mentioned each unit information, and running status, protection action event and the protection alarm event of each unit sent to the monitoring net.
6. the control protection system of a kind of flexible AC transmission equipment according to claim 5 is characterized in that: said event information net (1) is the message switching network between protective device internal switch amount input unit, Data Receiving unit, protection computing unit, record ripple/playback unit, switching value output unit and the communications management unit (1).
7. the control protection system of a kind of flexible AC transmission equipment according to claim 5; It is characterized in that: said communications management unit (1) is connected with operation keyboard (1) with said LCDs, consults event information, throws and to move back each defencive function, protection parameter and display device running status are set through the button of operation keyboard.
8. the control protection system of a kind of flexible AC transmission equipment according to claim 7; It is characterized in that: said communications management unit (1) is connected with record ripple net with said record ripple/playback unit respectively; Receive record ripple/playback unit waveform recorded data, and send to record ripple net.
9. the control protection system of a kind of flexible AC transmission equipment according to claim 8, it is characterized in that: said communications management unit (1) is furnished with can plug the CF card, stores record ripple/playback unit waveform recorded data.
10. the control protection system of a kind of flexible AC transmission equipment according to claim 9 is characterized in that: said communications management unit (1) receives the said waveform playback that the record ripple/the playback terminal issues and is transmitted to said record ripple/playback unit and is used for playback.
11. the control protection system of a kind of flexible AC transmission equipment according to claim 1 is characterized in that: said protective device, record ripple/playback terminal and protection and record marble station are inserted record ripple net and are shared Wave data.
12. the control protection system of a kind of flexible AC transmission equipment according to claim 1 and 2 is characterized in that: said measure and control device comprises LCDs and operation keyboard (2), switching value input unit, analog input unit, switching value output unit and communications management unit (2).
13. the control protection system of a kind of flexible AC transmission equipment according to claim 12; It is characterized in that: said communications management unit (2) is interconnected through event information net (2) with said switching value input unit, analog input unit and switching value output unit; The running status and the electric parameters of above-mentioned each unit of inquiry are calculated the result, and result of calculation is sent to the monitoring net.
14. the control protection system of a kind of flexible AC transmission equipment according to claim 13 is characterized in that: said result of calculation comprises effective value, active power, the reactive power harmonic content of line current and line voltage distribution.
15. the control protection system of a kind of flexible AC transmission equipment according to claim 13 is characterized in that: said event information net (2) is the message switching network between measure and control device internal switch amount input unit, analog input unit, switching value output unit and the communications management unit 2.
16. the control protection system of a kind of flexible AC transmission equipment according to claim 2 is characterized in that: said man-machine interface, station monitoring and control equipment and protection and record marble station are inserted said monitoring net and are shared event information and the measurement data that measure and control device produces.
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| CN104638770A (en) * | 2015-02-12 | 2015-05-20 | 中国能源建设集团广东省电力设计研究院有限公司 | Substation monitoring system |
| WO2016026243A1 (en) * | 2014-08-18 | 2016-02-25 | 国家电网公司 | Wams multi-facts coordination control-based real-time control system |
| CN106655123A (en) * | 2016-12-29 | 2017-05-10 | 北京四方继保自动化股份有限公司 | Subsynchronous/super-synchronous oscillation monitoring protection apparatus and oscillation monitoring protection method |
| CN109962473A (en) * | 2017-12-14 | 2019-07-02 | 中电普瑞科技有限公司 | A kind of Control protection system of THE UPFC UPFC |
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| CN109962473A (en) * | 2017-12-14 | 2019-07-02 | 中电普瑞科技有限公司 | A kind of Control protection system of THE UPFC UPFC |
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| CN102522825B (en) | 2014-08-27 |
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