CN1688107A - Thyrister valve photoelectric triger plate for stationary reactive power compensator - Google Patents
Thyrister valve photoelectric triger plate for stationary reactive power compensator Download PDFInfo
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Abstract
A thyristor valve photoelectric trigger plate for a static reactive power compensator is composed of a voltage power-fetch and a supply conversion circuit, a supply monitor loop, a voltage testing loop, a logic circuit, a trigger circuit, a back-up trigger circuit, a light receiving loop and a light emit circuit, among which, the voltage power-fetch and supply conversion loop gets power supply necessary for the system work from a primary device, the logic circuit coordinates work of all parts to encode and decode signals to generate trigger pulses and state signals to generate trigger pulses and state information of the thyristor, the back-up trigger loop trigger the thyristor valve automatically when over high voltage appear at both ends of the valve to avoid broken-through.
Description
Technical field the present invention relates to a kind of high power semiconductor component, and the thyristor valve photoelectricity trigger board (TE) of especially a kind of silent oscillation reactive power compensator SVC (Static Var Compensation) is applied in the middle of electrical network and the electric power system.
The background technology recent two decades comes, and large area blackout stable by voltage all over the world and that voltage collapse causes is of common occurrence, also repeatedly takes place in China's voltage collapse accident.At the ultra-large type power load center that China southeastern coastal areas form, there is the not enough day by day problem of support of dynamic reactive power in the electrical network.Along with the expansion of China's " transferring electricity from the west to the east " implementation and interconnected network scale, the voltage stable problem is particularly outstanding.
Adopt silent oscillation reactive power compensator (SVC, Static Var Compensation) is one of effective measures of addressing these problems, it has brought into play considerable effect in solving problems such as the grid stability and the distribution quality of power supply, be the advanced practical technique that present various countries generally adopt.The thyristor triggering technique is the core technology of various power electronic equipments, and general triggering technique comprises that electromagnetism triggers, photoelectricity triggers and light triggers three kinds both at home and abroad at present.The invention belongs to the category that photoelectricity triggers.
Generally speaking, silent oscillation reactive power compensator thyristor valve generally all is positioned at high potential, and the insulation against ground electric pressure generally is 35kV, therefore adopts conventional control method can not meet the demands.Compare with traditional controlling object, the major technology difficult point is as follows: 1), different with the system that is in ground because thyristor valve photoelectricity trigger board is positioned at high potential, and the energy problem that must solve thyristor valve photoelectricity trigger board; 2) thyristor valve photoelectricity trigger board is positioned at hot side, its electromagnetic environment of living in is more abominable, big electric current, the high field intensity of transmission line can cause bigger electromagnetic interference to the electronics triggering system on the one hand, on the other hand, thyristor valve high-speed switch process also can produce a large amount of strong electromagnetic, therefore must solve the Anti-interference Design problem of thyristor valve photoelectricity trigger board; 3) the communication problem between thyristor valve photoelectricity trigger board and ground installation; 4) thyristor valve trigger and the control strategy that detects in real time.These technological difficulties have determined the exploitation of thyristor valve photoelectricity trigger board to have very large technical difficulty.Wherein, the photoelectricity trigger board (TE) of thyristor valve is one of core technology of silent oscillation reactive power compensation technology.
Summary of the invention is in order to solve the problems of the technologies described above, purpose of the present invention realizes a kind of silent oscillation reactive power compensator (SVC exactly, Static Var Compensation) thyristor valve photoelectricity trigger board (TE) possesses following function is arranged: 1) voltage is got the energy function; 2) thyristor valve trigger function; 3) thyristor valve measuring ability; 4) photoelectricity of signal, electric light translation function; 5) thyristor valve reserve triggers function; 6) thyristor valve electronics triggering system power monitoring function.By the combination of these functions, can well realize triggering and detection to thyristor valve.
The technical solution adopted for the present invention to solve the technical problems is: silent oscillation reactive power compensator (SVC, Static Var Compensation) thyristor valve photoelectricity trigger board (TE) mainly gets energy by voltage and power source conversion loop, power monitor circuit, voltage detecting loop, logical circuit, triggering loop, reserve triggering loop, light-receiving loop and light launching circuit eight parts constitute.
The light-receiving loop will be converted to the signal of telecommunication from the light signal of optical fiber, and with signal of telecommunication input logic loop; Voltage is got energy and the power source conversion loop gets power supply from the primary equipment side-draw, exports plurality of voltages to power monitor circuit, and respectively to triggering loop, light-receiving loop, light launching circuit and logical circuit output voltage; Power monitor circuit is with the power state information input logic loop of whole system; The instantaneous voltage at thyristor two ends is detected in the voltage detecting loop, exports detection signal to logical circuit, for triggering, status monitoring and the overvoltage protection of thyristor provides threshold voltage; Logical circuit carries out Code And Decode to control command, generates the trigger impulse of thyristor and the state information of thyristor according to trigger command, and exports trigger impulse to gate circuit transistor gate through triggering the loop, also to light launching circuit output light emission signal; Be connected with light path device by optical fiber between light launching circuit and the light-receiving loop; Reserve triggers the voltage that the loop monitors the thyristor two ends, exports trigger impulse to gate circuit transistor gate.
Wherein, voltage get can and power source conversion loop, logical circuit and reserve to trigger the loop be core technology of the present invention.Voltage is got energy and power source conversion loop major function is to get the required power supply of system works from the primary equipment side-draw; The logical circuit major function is to coordinate the work of each several part, and signal is carried out Code And Decode, generates the trigger impulse of thyristor and the state information of thyristor; It is when too high voltage occurring at the thyristor valve two ends, to trigger thyristor valve automatically that reserve triggers the loop major function, avoids thyristor valve by too high voltage breakdown.
The thyristor valve photoelectricity trigger board (TE) of silent oscillation reactive power compensator (SVC, Static Var Compensation) is not seen identical or similar techniques at home, outward as yet.At present, multiple thyristor triggering system is arranged on the market at home and abroad, but they and the present invention have bigger difference, mainly show the following aspects, 1) the electric pressure difference, this patent is mainly used in the above electric pressure of 35kV; 2) triggering is different with detection mode, and the present invention adopts the scheme of photoelectricity triggering and Photoelectric Detection.
The thyristor valve photoelectricity trigger board (TE) of silent oscillation reactive power compensator of the present invention (SVC, Static Var Compensation) has bigger difference with traditional controllable series compensation thyristor valve electronics triggering system (TETS).Mainly show two aspects: 1) get energy loop difference; 2) core trigger of system is different with the detection logic.
Owing to adopt above-mentioned technical point scheme, technical scheme of the present invention has following beneficial effect: 1, the triggering that realizes thyristor valve with light signal with detect 2, realizing at hot side that voltage is got can, improved system fail safe and reliability 3, adopted low power consumption design method, reduce as far as possible to get can the loop power requirement; 4, this system has comprised the reserve triggering function of thyristor valve, has avoided the damage of thyristor valve voltage breakdown; 5, circuit realizes that simply antijamming capability is strong by 6, cost is low, device is easy to choose.
Therefore, the thyristor valve photoelectricity trigger board of silent oscillation reactive power compensator of the present invention has reliable operation, stability is high, antijamming capability is strong advantage, well solved the bottleneck problem that the silent oscillation reactive power compensator is used in electric power system, had great importance.
Description of drawings
Fig. 1 is the circuit block diagram of total structure of the thyristor valve photoelectricity trigger board of silent oscillation reactive power compensator of the present invention;
Fig. 2 (a) is the circuit theory diagrams that the voltage among Fig. 1 is got energy and power source conversion loop;
Fig. 2 (b) is the circuit theory diagrams that reserve triggers the loop among Fig. 1;
Fig. 2 (c) is the circuit theory diagrams of logical circuit among Fig. 1;
Fig. 2 (d) is the circuit theory diagrams in voltage detecting loop among Fig. 1;
Fig. 2 (e) is the circuit theory diagrams in light-receiving loop among Fig. 1;
Fig. 2 (f) is the circuit theory diagrams of power monitor circuit among Fig. 1.
Embodiment
The circuit diagram of Fig. 1 to Fig. 2 (f) expression a kind of embodiment of the present invention.
Referring to Fig. 1, the thyristor valve photoelectricity trigger board (TE) of expression silent oscillation reactive power compensator SVC (Static Var Compensation), it mainly gets energy by voltage and power source conversion loop, power monitor circuit, voltage detecting loop, logical circuit, triggering loop, reserve triggering loop, light-receiving loop and light launching circuit eight parts constitute.Voltage is got energy and power source conversion loop major function is to get the required power supply of system works from the primary equipment side-draw, output+60V and+voltage of 10V is to power monitor circuit, and respectively to the voltage that triggers loop output+60V, to the voltage of light-receiving loop, light launching circuit and logical circuit output+10V; The logical circuit major function is to coordinate the work of each several part, and signal is carried out Code And Decode, generates the trigger impulse of thyristor and the state information of thyristor; It is when too high voltage occurring at the thyristor valve two ends, to trigger thyristor valve automatically that reserve triggers the loop major function, avoids thyristor valve by too high voltage breakdown.
Shown in Fig. 2 (a), be that the voltage among Fig. 1 is got the circuit theory diagrams in energy and power source conversion loop, this partial circuit has bigger difference with the controllable series compensation thyristor valve electronics triggering system of using always (TETS).Be connected with filtering and anti-interference loop behind the power source conversion loop, in parallel with anode and the negative electrode of thyristor Ta again through shunt capacitance C2; The gate pole of thyristor Ta is in series with resistance R 1 and voltage-stabiliser tube DZ; Thyristor Ta is in parallel with thyristor through capacitor C 1 and resistance R 2.This partial circuit is finished through the power source conversion loop from the voltage of the hot side of system and is obtained certain energy, again through filtering and anti-interference loop, is converted to the required voltage of TE plate.In order to obtain enough energy, require the voltage effective value of hot side to be not less than 80V.
Shown in Fig. 2 (b), be the circuit theory diagrams that reserve triggers the loop among Fig. 1.The voltage at the two ends of thyristor is applied on the voltage breakdown element of connecting with resistance R 1, is connected to the gate pole of thyristor again through voltage-stabiliser tube Z1 and diode D2.When thyristor both end voltage during, voltage breakdown element conductive, thereby remove to trigger thyristor by diode D2 and voltage-stabiliser tube Z1 greater than its operating value.The voltage breakdown element inserts the light launching circuit through the resistance R 3 and the diode D3 of series connection, and through parallel resistor R2 and capacitor C 1 ground connection.After the resistance R 3 through the voltage-stabiliser tube Z2 and capacitor C 2 ground connection of parallel connection.The major function of this partial circuit is the voltage that monitors the thyristor two ends, when magnitude of voltage reaches the protection definite value, generates the thyristor trigger impulse automatically, makes the thyristor conducting.Be mainly used in the protection thyristor, prevent that the thyristor two ends are owing to overtension damages.
Shown in Fig. 2 (c), be the circuit theory diagrams of logical circuit among Fig. 1.Through general monostable trigger D (its concrete model can be selected CD4538 for use), send into general NOR gate OR1, OR2 (its concrete model can be selected CD4001 for use) from the signal in light-receiving loop respectively, send into CPU more respectively.General NOR gate OR3 (its concrete model can be selected CD4001 for use) receives the signal from CPU and power supply monitoring loop respectively, delivers to and triggers the loop.Trigger the signal in loop from reserve and send into CPU.Send into general not gate NOT (its concrete model can be selected CD40106 for use) respectively from the signal in voltage detecting loop, general NAND gate AND5 (its concrete model can be selected CD4023 for use), and CPU, be connected with general NAND gate AND1, AND2, AND3 (its concrete model can be selected CD4023 for use) respectively again, after general NAND gate AND4 (its concrete model can be selected CD4023 for use) delivers to the light launching circuit.This partial circuit is the core of the thyristor valve photoelectricity trigger board of silent oscillation reactive power compensator, is responsible for coordinating the function of each several part, and control command is decoded and the thyristor monitoring information is encoded.In order to reduce the power consumption of photoelectricity trigger board as far as possible, this partial circuit has adopted low power dissipation design, mainly comprises selecting low-power consumption chip and the design of central processing unit sleep mode etc. for use.This partial circuit and controllable series compensation thyristor valve electronics triggering system (TETS) have bigger difference.In controllable series compensation thyristor valve electronics triggering system (TETS), need be to the trigger command identification of decoding, and generate different trigger impulses according to different trigger commands.And in silent oscillation reactive power compensator SVC (Static Var Compensation) thyristor valve photoelectricity trigger board (TE), do not need the trigger command identification of decoding, only be to generate trigger impulse according to trigger command.Therefore the formation of this logical circuit is comparatively simple, and functional reliability is higher.
Shown in Fig. 2 (d), be the circuit theory diagrams in voltage detecting loop among Fig. 1.One side of this partial circuit is in parallel with the both end voltage of thyristor, the CPU in resistance R 1, R2, R3 and diode D (its concrete model can select 4148 for use) access logical circuit.Another branch road is through resistance R 1, and the general not gate U1 of R4 and two serial connections and U2 (its concrete model can select 40106 for use) insert logical circuit.The major function of this partial circuit is to detect the instantaneous voltage at thyristor two ends, for triggering, status monitoring and the overvoltage protection of thyristor provides threshold voltage.
Shown in Fig. 2 (e), be the circuit theory diagrams in light-receiving loop among Fig. 1.Optical receiver is through the optical fiber receiving optical signals, and again through general comparator U1 (its concrete model can be selected LM393 for use) and change-over circuit, the signal of telecommunication that will be got by the light signal conversion is sent into the CPU in the logical circuit.The major function of this partial circuit is the light signal that receives GCU, and this light signal is converted to the signal of telecommunication.
Shown in Fig. 2 (f), be the circuit theory diagrams of power monitor circuit among Fig. 1.From voltage get can and the power source conversion loop+60V and+10V voltage is through general comparator U1 (its concrete model can be selected LM393 for use) and comprise the comparison circuit of voltage-stabiliser tube D1, compares the power status of surveillance with " reference voltage ".Wherein " reference voltage " from other loops, represent the whole system locking or the situation of system power supply when resetting.The major function of this partial circuit is the power supply status that monitors whole system, and when power supply can not satisfy the system works requirement, the locking or the correlation function that resets were in order to avoid whole system is out of control.
The represented embodiment of accompanying drawing only is a specific embodiment of the present invention, is not limitation of the present invention.Those of ordinary skill in the art does not break away from essential scope of the present invention, also can make various improvement and alternative.
Claims (7)
1, a kind of thyristor valve photoelectricity trigger board of silent oscillation reactive power compensator is characterized in that: by voltage get can and power source conversion loop, power monitor circuit, voltage detecting loop, logical circuit, triggering loop, reserve trigger loop, light-receiving loop and light launching circuit and constitute;
The light-receiving loop will be converted to the signal of telecommunication from the light signal of optical fiber, and with signal of telecommunication input logic loop; Voltage is got energy and the power source conversion loop gets power supply from the primary equipment side-draw, exports plurality of voltages to power monitor circuit, and respectively to triggering loop, light-receiving loop, light launching circuit and logical circuit output voltage; Power monitor circuit is with the power state information input logic loop of whole system; The instantaneous voltage at thyristor two ends is detected in the voltage detecting loop, exports detection signal to logical circuit, for triggering, status monitoring and the overvoltage protection of thyristor provides threshold voltage; Logical circuit carries out Code And Decode to control command, generates the trigger impulse of thyristor and the state information of thyristor according to trigger command, and exports trigger impulse to gate circuit transistor gate through triggering the loop, also to light launching circuit output light emission signal; Be connected with light path device by optical fiber between light launching circuit and the light-receiving loop; Reserve triggers the voltage that the loop monitors the thyristor two ends, exports trigger impulse to gate circuit transistor gate and light launching circuit.
2, the thyristor valve photoelectricity trigger board of silent oscillation reactive power compensator according to claim 1, it is characterized in that: voltage get can and the power source conversion loop from the hot side of system carry out voltage get can, for the thyristor valve photoelectricity trigger board of silent oscillation reactive power compensator provides power supply; Get in energy and the power source conversion loop at this voltage, be connected with filtering and anti-interference loop behind the power source conversion loop, in parallel with anode and the negative electrode of thyristor Ta again through shunt capacitance C2; The gate pole of thyristor Ta is in series with resistance R 1 and voltage-stabiliser tube D
ZThyristor Ta is in parallel with thyristor through capacitor C 1 and resistance R 2.
3, the thyristor valve photoelectricity trigger board of silent oscillation reactive power compensator according to claim 1, it is characterized in that: reserve triggers the voltage that the loop monitors the thyristor two ends, when magnitude of voltage reaches the protection definite value, generate the thyristor trigger impulse automatically, make the thyristor conducting; Trigger in loop in this reserve, the voltage at the two ends of thyristor is applied on the voltage breakdown element of connecting with resistance R 1, is connected to the gate pole of thyristor again through voltage-stabiliser tube Z1 and diode D2; When thyristor both end voltage during, voltage breakdown element conductive, thereby remove to trigger thyristor by diode D2 and voltage-stabiliser tube Z1 greater than its operating value; The voltage breakdown element inserts the light launching circuit through the resistance R 3 and the diode D3 of series connection, and through parallel resistor R2 and capacitor C 1 ground connection; After the resistance R 3 through the voltage-stabiliser tube Z2 and capacitor C 2 ground connection of parallel connection.
4, the thyristor valve photoelectricity trigger board of silent oscillation reactive power compensator according to claim 1, it is characterized in that: logical circuit adopts low power dissipation design, select the design of low-power consumption chip and central processing unit sleep mode for use, to reduce the power consumption of photoelectricity trigger board; In this logical circuit, through general monostable trigger D, send into general NOR gate OR1, OR2 from the signal in light-receiving loop respectively, send into CPU more respectively; General NOR gate OR3 receives the signal from CPU and power supply monitoring loop respectively, delivers to and triggers the loop; Trigger the signal in loop from reserve and send into CPU; Send into general not gate NOT respectively from the signal in voltage detecting loop, general NAND gate AND5, and CPU are connected with general NAND gate AND1, AND2, AND3 respectively, after general NAND gate AND4 delivers to the light launching circuit; This logical circuit is responsible for coordinating the function of each several part, control command is decoded and the thyristor monitoring information is encoded, but do not need the trigger command identification of decoding.
5, the thyristor valve photoelectricity trigger board of silent oscillation reactive power compensator according to claim 1, it is characterized in that: the instantaneous voltage at thyristor two ends is detected in the voltage detecting loop, for triggering, status monitoring and the overvoltage protection of thyristor provides threshold voltage; One side in this voltage detecting loop is in parallel with the both end voltage of thyristor, the CPU in resistance R 1, R2, R3 and diode D access logical circuit, and another branch road is through resistance R 1, and the general not gate U1 of R4 and two serial connections and U2 insert logical circuit.
6, the thyristor valve photoelectricity trigger board of silent oscillation reactive power compensator according to claim 1 is characterized in that: the light-receiving loop receives the light signal of GCU, and this light signal is converted to the signal of telecommunication; In this light-receiving loop, optical receiver is through the optical fiber receiving optical signals, and again through general comparator and change-over circuit, the signal of telecommunication that will be got by the light signal conversion is sent into the CPU in the logical circuit.
7, the thyristor valve photoelectricity trigger board of silent oscillation reactive power compensator according to claim 1, it is characterized in that: power monitor circuit monitors the power supply status of whole system, when power supply can not satisfy the system works requirement, the locking or the correlation function that resets were in order to avoid whole system is out of control; In this power monitor circuit monitors, from voltage get can and the plurality of voltages in power source conversion loop through general comparator with comprise the comparison circuit of voltage-stabiliser tube D1, the situation of system power supply is compared the power status of surveillance with the whole system locking or when resetting.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100646876A CN100403651C (en) | 2005-04-20 | 2005-04-20 | Thyrister valve photoelectric triger plate for stationary reactive power compensator |
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| CNB2005100646876A CN100403651C (en) | 2005-04-20 | 2005-04-20 | Thyrister valve photoelectric triger plate for stationary reactive power compensator |
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| CN1688107A true CN1688107A (en) | 2005-10-26 |
| CN100403651C CN100403651C (en) | 2008-07-16 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101510771B (en) * | 2008-12-15 | 2010-12-08 | 北京索控欣博通电气有限公司 | Trigger equipment of induction energy-taking type thyristor |
| CN101662154B (en) * | 2009-09-25 | 2011-07-06 | 许继集团有限公司 | Link control panel of IGBT valve of chain static synchronous compensator |
| WO2012037770A1 (en) * | 2010-09-20 | 2012-03-29 | 中国电力科学研究院 | New method for protecting thyristors in direct-cureent converter valve from discontinuous currents |
| CN101834537B (en) * | 2009-12-11 | 2013-03-13 | 中电普瑞科技有限公司 | High potential electron plate of thyristor valve |
| CN103259273A (en) * | 2013-05-23 | 2013-08-21 | 南京南瑞继保电气有限公司 | A triggering system of thyristor switched capacitor valve set |
| CN103516177A (en) * | 2013-09-13 | 2014-01-15 | 华中科技大学 | Triggering device for pulse thyristor |
| CN104716937A (en) * | 2013-12-12 | 2015-06-17 | 国家电网公司 | Thyristor valve body |
| CN105676100A (en) * | 2016-01-19 | 2016-06-15 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Voltage-applied test method for silicon controlled rectifier electronic equipment in moist environment |
| CN106972852A (en) * | 2017-04-19 | 2017-07-21 | 深圳市云顶信息技术有限公司 | Interface circuit and electronic equipment |
| CN109962611A (en) * | 2017-12-14 | 2019-07-02 | 中电普瑞科技有限公司 | A kind of high-lying electronic plate and its control method for high altitude localities |
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| CN2033171U (en) * | 1987-12-05 | 1989-02-22 | 中国人民解放军总后医学专科学校生物医学工程系 | Bidirectional silicon control digit flopover |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101510771B (en) * | 2008-12-15 | 2010-12-08 | 北京索控欣博通电气有限公司 | Trigger equipment of induction energy-taking type thyristor |
| CN101662154B (en) * | 2009-09-25 | 2011-07-06 | 许继集团有限公司 | Link control panel of IGBT valve of chain static synchronous compensator |
| CN101834537B (en) * | 2009-12-11 | 2013-03-13 | 中电普瑞科技有限公司 | High potential electron plate of thyristor valve |
| WO2012037770A1 (en) * | 2010-09-20 | 2012-03-29 | 中国电力科学研究院 | New method for protecting thyristors in direct-cureent converter valve from discontinuous currents |
| CN103259273A (en) * | 2013-05-23 | 2013-08-21 | 南京南瑞继保电气有限公司 | A triggering system of thyristor switched capacitor valve set |
| CN103516177A (en) * | 2013-09-13 | 2014-01-15 | 华中科技大学 | Triggering device for pulse thyristor |
| CN103516177B (en) * | 2013-09-13 | 2015-09-23 | 华中科技大学 | A kind of trigger equipment of pulse thyristor |
| CN104716937A (en) * | 2013-12-12 | 2015-06-17 | 国家电网公司 | Thyristor valve body |
| CN104716937B (en) * | 2013-12-12 | 2018-06-05 | 国家电网公司 | A kind of thyristor valve body |
| CN105676100A (en) * | 2016-01-19 | 2016-06-15 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Voltage-applied test method for silicon controlled rectifier electronic equipment in moist environment |
| CN106972852A (en) * | 2017-04-19 | 2017-07-21 | 深圳市云顶信息技术有限公司 | Interface circuit and electronic equipment |
| CN109962611A (en) * | 2017-12-14 | 2019-07-02 | 中电普瑞科技有限公司 | A kind of high-lying electronic plate and its control method for high altitude localities |
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Assignee: China Electric Prime Technology Co., Ltd. Assignor: China Electric Power Research Institute Contract fulfillment period: 2008.10.10 to 2014.10.10 contract change Contract record no.: 2008990001333 Denomination of invention: Thyrister valve photoelectric triger plate for stationary reactive power compensator Granted publication date: 20080716 License type: Exclusive license Record date: 2008.12.3 |
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