CN102709886A - Status monitoring and overvoltage protection system of high-voltage TCR (Thyristor Controlled Reactor) thyristor valve gate set - Google Patents
Status monitoring and overvoltage protection system of high-voltage TCR (Thyristor Controlled Reactor) thyristor valve gate set Download PDFInfo
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Abstract
The invention discloses a status monitoring and overvoltage protection system of a high-voltage TCR (Thyristor Controlled Reactor) thyristor valve gate set, which comprises a main control device, a static voltage-equalizing and information acquisition module, a thyristor working status monitoring module, an AC voltage acquisition module, an overvoltage judging and signal expanding module, a forced triggering pulse string generating module, a high-level energy-acquiring and 1+1 redundant power supply, and a thyristor triggering module, wherein the static voltage-equalizing and information acquisition module is used for extracting AC voltage information and bi-directional overvoltage signals; the thyristor working status monitoring module is used for monitoring AC voltage signals of the TCR thyristor valve gate set; the AC voltage acquisition module is used for monitoring the bi-directional overvoltage information of the TCR thyristor valve gate set; the overvoltage judging and signal expanding module is used for carrying out overvoltage judgment according to the bi-directional overvoltage information; and the high-level energy-acquiring and 1+1 redundant power supply is used for controlling conduction and conduction angle of the TCR thyristor valve gate set. The status monitoring and overvoltage protection system disclosed by the invention is simple and reliable and low in cost and can be used for overvoltage protection on the high-voltage TCR thyristor valve gate set and real-time detection on the normal working status of the high-voltage TCR thyristor valve gate set.
Description
Technical field
The invention belongs to electric and electronic technical field, more specifically relate to the condition monitoring and the overvoltage protective system of the brilliant pipe valve lock group of a kind of high pressure TCR (Thyristor Controlled Reactor), be applicable to the condition monitoring and the overvoltage protection of the brilliant pipe valve lock of TCR group.
Background technology
Modern society be unable to do without flexible AC transmitting system, and SVC (Static Vat Compensator) and SVG (Static Var Generator) are the basic technology and the key equipment of flexible AC transmitting system.High pressure TCR (Thyristor Controlled Reactor) then is the core apparatus of SVC, by multistage anti-parallel thyristor thyristor valve string and the inductance that (thyristor valve group) series connection constitutes is composed in series.Usually, control its size through the angle of flow of control thyristor valve group to the electrical network injecting reactive current.In order to guarantee that TCR works reliably, the operating state of thyristor valve group is implemented monitoring in real time and the overvoltage fault that the thyristor valve group possibly occur is implemented protection reliably is crucial.
Traditional high pressure TCR adopts the overvoltage protection of breakdown diode BOD as the thyristor valve group more; Principle is to utilize its distinctive voltage-current characteristic; Be serially connected in breakdown diode BOD among the alternating voltage sampling circuit,, reach turning back during voltage of BOD when the improper rising of high pressure TCR thyristor valve group voltage; BOD moment accomplishes from the saltus step of high-impedance state to low resistive state; Utilize a pair of antiparallel thyristor in the vent discharge diffluence forced trigger thyristor valve group produced, make its conducting, avoid it to bear overvoltage and damage.
Sampling BOD as the advantage of the overvoltage protection of thyristor valve group is, the voltage of turning back that causes the protection action is accurate, and the vent discharge diffluence forced-triggered that produces can utilize BOD to turn back the time is in the thyristor of overvoltage condition.Its shortcoming is protection operation voltage inconvenience adjustment, and BOD costs an arm and a leg, and the quantity of in addition in equipment, using is many, and delivery cycle is long, has increased the cost of equipment.In addition, inconvenience takes into account the monitoring to thyristor valve group normal operating conditions, makes the monitoring and the overvoltage protective system more complicated of high pressure TCR high-pressure thyristor valve.
In order to overcome the above-mentioned shortcoming of BOD in high pressure TCR high-pressure thyristor valve, using; Must find a kind of means simple and reliable, with low cost to replace BOD; Enforcement is to the condition monitoring and the overvoltage protection of high pressure TCR thyristor valve group, this problem to be solved by this invention just.
Find a kind of means simple and reliable, with low cost to replace BOD; The state of high pressure TCR thyristor valve group is implemented monitoring and overvoltage protection, must solve following problem: a) find a kind of simple and reliable, high pressure TCR thyristor valve group overvoltage method for distilling that threshold values is easy to adjust.B) take into account extraction to high pressure TCR high-pressure thyristor valve group normal operating conditions information.C) it is right when occurring exchanging the overvoltage fault, to trigger thyristor reliably.
One Chinese patent application 201010281722.0 discloses a kind of novel thyristor over-voltage protection method, is applicable to the direct current transportation field.The present invention adopts diverse means, is applied to the overvoltage protection of ac high voltage TCR thyristor valve group, and can accomplish the real-time detection to thyristor valve group normal operating conditions simultaneously.
Summary of the invention
The objective of the invention is to be the problems referred to above to the prior art existence; The condition monitoring and the overvoltage protective system of the brilliant pipe valve lock of a kind of high pressure TCR group are provided; This system is simple and reliable; Threshold values is easy to adjust, takes into account the extraction to high pressure TCR high-pressure thyristor valve group normal operating conditions information, and it is right when occurring exchanging the overvoltage fault, to trigger thyristor reliably.
To achieve these goals, the present invention adopts following technical scheme:
The condition monitoring and the overvoltage protective system of the brilliant pipe valve lock of a kind of high pressure TCR group comprise master control set, and master control set output master control triggering signal sig2-Driver3 also comprises:
Static state voltage equipoise and information acquisition module are used to extract the AC information and the two-way overvoltage signal of the brilliant pipe valve lock of TCR group;
The thuristor working state monitoring modular is used for the OK signal is monitored and exported to the AC information of the brilliant pipe valve lock of TCR group to master control set;
The AC voltage sampling module is used for the two-way overvoltage information of the brilliant pipe valve lock of TCR group is monitored and monitoring result is input to the overvoltage judgement and signal is expanded module;
Overvoltage judgement and signal are expanded module, carry out the overvoltage judgement and generate overvoltage alarm signal sig1-HV1 according to AC information, and overvoltage alarm signal sig1-HV1 is sent to the warning synthesis module after generating the sig1-HV2 signal through negate;
Forced-triggered pulse train generation module is delivered to a high position according to overvoltage alarm signal sig1-HV1 generation forced-triggered burst signal sig2-Driver2 and is got ability and 1+1 redundant power and thyristor trigger module;
A high position is got ability and 1+1 redundant power and thyristor trigger module, and is parallelly connected with the brilliant pipe valve lock of TCR group, through the conducting of forced-triggered burst signal sig2-Driver2 or the brilliant pipe valve lock of master control triggering signal sig2-Driver3 control TCR group;
The warning synthesis module receives alarm signal and alarm signal is sent to master control set through an optical fiber sending module, and wherein alarm signal comprises OK signal and sig1-HV2 signal.
Aforesaid static state voltage equipoise and information acquisition module comprise divider resistance row, voltage stabilizing didoe DZ1 and the voltage stabilizing didoe DZ2 of series connection successively; The voltage stabilizing end of voltage stabilizing didoe DZ1 and the voltage stabilizing end of DZ2 are connected with the thuristor working state monitoring modular respectively, and the anode of voltage stabilizing didoe DZ2 is connected with the anode of voltage stabilizing didoe DZ1.
Aforesaid thuristor working state monitoring modular comprises voltage sampling signal module, first signal shaping and processing module, optocoupler transport module and secondary signal shaping and the processing module that connects successively, secondary signal shaping and processing module output OK signal.
Aforesaid AC voltage sampling module comprises voltage stabilizing didoe DZ3, voltage stabilizing didoe DZ4, resistance R 4, optocoupler U1 and optocoupler U2; Voltage on the brilliant pipe valve lock of the TCR group outputs to the voltage input interface that the voltage stabilizing end by the voltage stabilizing end of voltage stabilizing didoe DZ3 and voltage stabilizing didoe DZ4 constitutes after through divider resistance row dividing potential drop; End after the photodiode parallel connected in reverse phase of the photodiode of optocoupler U1 and optocoupler U2 is connected with resistance R 4 one ends; The other end after the photodiode parallel connected in reverse phase of the photodiode of optocoupler U1 and optocoupler U2 is connected with the anode of voltage stabilizing didoe DZ3, and the other end of resistance R 4 is connected with the anode of voltage stabilizing didoe DZ4.
Aforesaid overvoltage judgement and signal are expanded module and are comprised signal negate module, signal broadening module and signal shaping and the logic processing module that connects successively; The signal of signal shaping and logic processing module output is divided into two-way; One the tunnel is input to forced-triggered pulse train generation module as over voltage alarm signal sig1-HV1, and another road is carried out generating the sig1-HV2 signal after the level negate through signal negate module and outputed to the warning synthesis module.
An aforesaid high position is got ability and 1+1 redundant power and thyristor trigger module and is comprised power module and thyristor trigger module; Power module comprises that 40V main power source, 5V control power supply, time delay module and thyristor driver power supply; Dynamic voltage-balancing will be input to the 40V main power source from the voltage that the brilliant pipe valve lock of a TCR group high position is got after the ability; The output of 40V main power source is divided into three the tunnel; One the tunnel is connected with the thyristor trigger module with the thyristor driver power supply through time delay module successively, and two-way is input to 5V control power supply formation 1+1 redundant power respectively in addition, and forced-triggered burst signal sig2-Driver2 is input to the thyristor trigger module; Master control set output master control driving signal, master control driving signal are input to the thyristor trigger module as master control triggering signal sig2-Driver3 after through an optic fiber transceiver module.
The present invention compared with prior art has the following advantages and effect:
1, utilize means simple and reliable, with low cost to replace BOD, high pressure TCR thyristor valve group is implemented overvoltage protection, and the information of obtaining is simultaneously implemented to detect in real time to the normal operating conditions of high pressure TCR thyristor valve group.
2, can convenient, adjustment accurately flexibly to the threshold voltage of high pressure TCR thyristor valve group enforcement overvoltage protection.
3, make things convenient for the circuit and the structural design of the TE plate of high pressure TCR, improved its functional reliability.
4, BOD costs an arm and a leg, and consumption is very big in high pressure TCR, and the present invention greatly reduces the cost of high pressure TCR equipment.
Description of drawings
Fig. 1 is a circuit theory sketch map of the present invention;
Fig. 2 is the principle schematic of AC voltage sampling module of the present invention;
Fig. 3 is the principle schematic that overvoltage judgement of the present invention and signal are expanded module;
Fig. 4 is the principle schematic (wherein, (a) being circuit diagram, (b) is the waveform sketch map of signal sig1-HV1, (c) is the waveform sketch map of signal sig2-Driver1) of forced-triggered pulse train generation module of the present invention;
Fig. 5 is the principle schematic of thuristor working state monitoring modular of the present invention;
Fig. 6 is the principle schematic that a high position of the present invention is got ability and 1+1 redundant power and thyristor trigger module;
Fig. 7 is the principle schematic of warning synthesis module of the present invention.
Among the figure: 1-static state voltage equipoise and information acquisition module; 2-thuristor working state monitoring modular; 3-AC voltage sampling module; 4-overvoltage judgement and signal are expanded module; 5-forced-triggered pulse train generation module; A 6-high position is got ability and 1+1 redundant power and thyristor trigger module.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
Embodiment:
Like Fig. 1, shown in Figure 4, the condition monitoring and the overvoltage protective system of the brilliant pipe valve lock of a kind of high pressure TCR group comprise master control set, and master control set output master control triggering signal sig2-Driver3 also comprises:
Static state voltage equipoise and information acquisition module 1 are used to extract the AC information and the two-way overvoltage signal of the brilliant pipe valve lock of TCR group;
Thuristor working state monitoring modular 2 is used for the OK signal is monitored and exported to the AC information of the brilliant pipe valve lock of TCR group to master control set;
AC voltage sampling module 3 is used for the two-way overvoltage information of the brilliant pipe valve lock of TCR group is monitored and monitoring result is input to the overvoltage judgement and signal is expanded module 4;
Overvoltage judgement and signal are expanded module 4, carry out the overvoltage judgement and generate overvoltage alarm signal sig1-HV1 according to AC information, and overvoltage alarm signal sig1-HV1 is sent to the warning synthesis module after generating the sig1-HV2 signal through negate;
Forced-triggered pulse train generation module 5 is delivered to a high position according to overvoltage alarm signal sig1-HV1 generation forced-triggered burst signal sig2-Driver2 and is got ability and 1+1 redundant power and thyristor trigger module 6;
A high position is got ability and 1+1 redundant power and thyristor trigger module 6, and is parallelly connected with the brilliant pipe valve lock of TCR group, through the conducting of forced-triggered burst signal sig2-Driver2 or the brilliant pipe valve lock of master control triggering signal sig2-Driver3 control TCR group;
The warning synthesis module receives alarm signal and alarm signal is sent to master control set through an optical fiber sending module, and wherein alarm signal comprises OK signal and sig1-HV2 signal.
Static state voltage equipoise and information acquisition module 1 comprise divider resistance row, voltage stabilizing didoe DZ1 and the voltage stabilizing didoe DZ2 of series connection successively; The voltage stabilizing end of voltage stabilizing didoe DZ1 and the voltage stabilizing end of DZ2 are connected with thuristor working state monitoring modular 2 respectively, and the anode of voltage stabilizing didoe DZ2 is connected with the anode of voltage stabilizing didoe DZ1.
As shown in Figure 5; Thuristor working state monitoring modular 2 comprises voltage sampling signal module, first signal shaping and processing module, optocoupler transport module and secondary signal shaping and the processing module that connects successively, secondary signal shaping and processing module output OK signal.
As shown in Figure 2; AC voltage sampling module 3 comprises voltage stabilizing didoe DZ3, voltage stabilizing didoe DZ4, resistance R 4, optocoupler U1 and optocoupler U2; Voltage on the brilliant pipe valve lock of the TCR group outputs to the voltage input interface that the voltage stabilizing end by the voltage stabilizing end of voltage stabilizing didoe DZ3 and voltage stabilizing didoe DZ4 constitutes after through divider resistance row dividing potential drop; End after the photodiode parallel connected in reverse phase of the photodiode of optocoupler U1 and optocoupler U2 is connected with resistance R 4 one ends; The other end after the photodiode parallel connected in reverse phase of the photodiode of optocoupler U1 and optocoupler U2 is connected with the anode of voltage stabilizing didoe DZ3, and the other end of resistance R 4 is connected with the anode of voltage stabilizing didoe DZ4.The overvoltage fault appears in the thyristor valve group, and the photodiode of optocoupler U1, U2 has electric current.
As shown in Figure 3; Overvoltage judgement and signal are expanded module 4 and are comprised signal negate module, signal broadening module and signal shaping and the logic processing module that connects successively; The signal of signal shaping and logic processing module output is divided into two-way; One the tunnel is input to forced-triggered pulse train generation module 5 as over voltage alarm signal sig1-HV1, and another road is carried out generating the sig1-HV2 signal after the level negate through signal negate module and outputed to the warning synthesis module.
Like Fig. 1; Shown in Figure 6; The condition monitoring and the overvoltage protective system of the brilliant pipe valve lock of a kind of high pressure TCR group also comprise dynamic voltage-balancing, and a described high position is got ability and 1+1 redundant power and thyristor trigger module 6 and comprised power module and thyristor trigger module; Power module comprises that 40V main power source, 5V control power supply, time delay module and thyristor driver power supply; Dynamic voltage-balancing will be input to the 40V main power source from the voltage that the brilliant pipe valve lock of a TCR group high position is got after the ability, and the output of 40V main power source is divided into three the tunnel, the one tunnel and is connected with the thyristor trigger module with the thyristor driver power supply through time delay module successively; Two-way is input to 5V control power supply formation 1+1 redundant power respectively in addition; Forced-triggered burst signal sig2-Driver2 is input to the thyristor trigger module, and master control set output master control driving signal, master control driving signal are input to the thyristor trigger module as master control triggering signal sig2-Driver3 after through an optic fiber transceiver module.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (6)
1. the condition monitoring and the overvoltage protective system of the brilliant pipe valve lock of a high pressure TCR group comprise master control set, and master control set output master control triggering signal sig2-Driver3 is characterized in that, also comprises:
Static state voltage equipoise and information acquisition module (1) are used to extract the AC information and the two-way overvoltage signal of the brilliant pipe valve lock of TCR group;
Thuristor working state monitoring modular (2) is used for the OK signal is monitored and exported to the AC information of the brilliant pipe valve lock of TCR group to master control set;
AC voltage sampling module (3) is used for the two-way overvoltage information of the brilliant pipe valve lock of TCR group is monitored and monitoring result is input to the overvoltage judgement and signal is expanded module (4);
Overvoltage judgement and signal are expanded module (4), carry out the overvoltage judgement and generate overvoltage alarm signal sig1-HV1 according to AC information, and overvoltage alarm signal sig1-HV1 is sent to the warning synthesis module after generating the sig1-HV2 signal through negate;
Forced-triggered pulse train generation module (5) is delivered to a high position according to overvoltage alarm signal sig1-HV1 generation forced-triggered burst signal sig2-Driver2 and is got ability and 1+1 redundant power and thyristor trigger module (6);
A high position is got ability and 1+1 redundant power and thyristor trigger module (6), and is parallelly connected with the brilliant pipe valve lock of TCR group, through the conducting of forced-triggered burst signal sig2-Driver2 or the brilliant pipe valve lock of master control triggering signal sig2-Driver3 control TCR group; With
The warning synthesis module receives alarm signal and alarm signal is sent to master control set through an optical fiber sending module, and wherein alarm signal comprises OK signal and sig1-HV2 signal.
2. the condition monitoring and the overvoltage protective system of the brilliant pipe valve lock of a kind of high pressure TCR according to claim 1 group; It is characterized in that; Described static state voltage equipoise and information acquisition module (1) comprise divider resistance row, voltage stabilizing didoe DZ1 and the voltage stabilizing didoe DZ2 of series connection successively; The voltage stabilizing end of voltage stabilizing didoe DZ1 and the voltage stabilizing end of DZ2 are connected with thuristor working state monitoring modular (2) respectively, and the anode of voltage stabilizing didoe DZ2 is connected with the anode of voltage stabilizing didoe DZ1.
3. the condition monitoring and the overvoltage protective system of the brilliant pipe valve lock of a kind of high pressure TCR according to claim 1 group; It is characterized in that; Described thuristor working state monitoring modular (2) comprises voltage sampling signal module, first signal shaping and processing module, optocoupler transport module and secondary signal shaping and the processing module that connects successively, secondary signal shaping and processing module output OK signal.
4. the condition monitoring and the overvoltage protective system of the brilliant pipe valve lock of a kind of high pressure TCR according to claim 2 group; It is characterized in that; Described AC voltage sampling module (3) comprises voltage stabilizing didoe DZ3, voltage stabilizing didoe DZ4, resistance R 4, optocoupler U1 and optocoupler U2; Voltage on the brilliant pipe valve lock of the TCR group outputs to the voltage input interface that the voltage stabilizing end by the voltage stabilizing end of voltage stabilizing didoe DZ3 and voltage stabilizing didoe DZ4 constitutes after through divider resistance row dividing potential drop; End after the photodiode parallel connected in reverse phase of the photodiode of optocoupler U1 and optocoupler U2 is connected with resistance R 4 one ends; The other end after the photodiode parallel connected in reverse phase of the photodiode of optocoupler U1 and optocoupler U2 is connected with the anode of voltage stabilizing didoe DZ3, and the other end of resistance R 4 is connected with the anode of voltage stabilizing didoe DZ4.
5. the condition monitoring and the overvoltage protective system of the brilliant pipe valve lock of a kind of high pressure TCR according to claim 1 group; It is characterized in that; Described overvoltage judgement and signal are expanded module (4) and are comprised signal negate module, signal broadening module and signal shaping and the logic processing module that connects successively; The signal of signal shaping and logic processing module output is divided into two-way; One the tunnel is input to forced-triggered pulse train generation module (5) as over voltage alarm signal sig1-HV1, and another road is carried out generating the sig1-HV2 signal after the level negate through signal negate module and outputed to the warning synthesis module.
6. the condition monitoring and the overvoltage protective system of the brilliant pipe valve lock of a kind of high pressure TCR according to claim 1 group; It is characterized in that; Also comprise dynamic voltage-balancing; A described high position get can and 1+1 redundant power and thyristor trigger module (6) comprise power module and thyristor trigger module, power module comprises that 40V main power source, 5V control power supply, time delay module and thyristor driver power supply, dynamic voltage-balancing will be input to the 40V main power source from the voltage that a TCR crystalline substance pipe valve lock group high position is got after the ability; The output of 40V main power source is divided into three the tunnel; One the tunnel is connected with the thyristor trigger module with the thyristor driver power supply through time delay module successively, and two-way is input to 5V control power supply formation 1+1 redundant power respectively in addition, and forced-triggered burst signal sig2-Driver2 is input to the thyristor trigger module; Master control set output master control driving signal, master control driving signal are input to the thyristor trigger module as master control triggering signal sig2-Driver3 after through an optic fiber transceiver module.
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| CN201210190097.8A CN102709886B (en) | 2012-06-08 | 2012-06-08 | Status monitoring and overvoltage protection system of high-voltage TCR (Thyristor Controlled Reactor) thyristor valve gate set |
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| CN201210190097.8A CN102709886B (en) | 2012-06-08 | 2012-06-08 | Status monitoring and overvoltage protection system of high-voltage TCR (Thyristor Controlled Reactor) thyristor valve gate set |
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| CN103457590A (en) * | 2013-08-30 | 2013-12-18 | 株洲变流技术国家工程研究中心有限公司 | Method for detecting internal overvoltage protection of light control thyristor and device for generating status signal |
| CN103616573A (en) * | 2013-12-12 | 2014-03-05 | 国家电网公司 | Reverse recovery charge measurement system and measurement method for silicon controlled rectifier |
| CN105158669A (en) * | 2015-08-28 | 2015-12-16 | 中冶南方工程技术有限公司 | Thyristor overvoltage detection circuit used for TCR type high-voltage SVC device |
| CN110323931A (en) * | 2019-08-15 | 2019-10-11 | 荣信汇科电气技术有限责任公司 | A kind of redundancy trigger circuit comprising state feedback function |
| CN112366930A (en) * | 2020-11-04 | 2021-02-12 | 合肥联信电源有限公司 | Method for controlling switch power supply redundancy of static switch |
| CN112702052A (en) * | 2020-12-15 | 2021-04-23 | 山东管理学院 | High-voltage thyristor valve group triggering system and method |
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| CN110323931B (en) * | 2019-08-15 | 2024-05-10 | 荣信汇科电气股份有限公司 | Redundant trigger circuit containing state feedback function |
| CN112366930A (en) * | 2020-11-04 | 2021-02-12 | 合肥联信电源有限公司 | Method for controlling switch power supply redundancy of static switch |
| CN112702052A (en) * | 2020-12-15 | 2021-04-23 | 山东管理学院 | High-voltage thyristor valve group triggering system and method |
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