CN204304446U - The quick harmonics restraint reactive power compensator of a kind of intelligent integrated formula - Google Patents
The quick harmonics restraint reactive power compensator of a kind of intelligent integrated formula Download PDFInfo
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- CN204304446U CN204304446U CN201420771565.5U CN201420771565U CN204304446U CN 204304446 U CN204304446 U CN 204304446U CN 201420771565 U CN201420771565 U CN 201420771565U CN 204304446 U CN204304446 U CN 204304446U
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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
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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
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model discloses the quick harmonics restraint reactive power compensator of a kind of intelligent integrated formula, comprise circuit breaker, internal current instrument transformer, control unit, switching compensating unit, switching compensating unit comprises silicon controlled module, resistance capaciting absorpting circuit, reactor, capacitor.Circuit breaker one end access electrical network, the other end connects internal current instrument transformer and switching compensating unit; In switching compensating unit, silicon controlled module, reactor, capacitor are connected successively, and control unit comprises controllable silicon drive circuit, zero cross detection circuit, internal current testing circuit, temperature sensing circuit, man-machine display panel, bus communication and level controling signal input port.The utility model is suitable for the three phase network of load frequent variations, fast response time, operating passing zero, no-flashy-flow, without arcing, without the need to electric discharge can again drop into, can harmonic inhabitation electric current and flickering electric current, and provide required reactive power compensation fast for the power consumption equipment of load frequent variations.
Description
Technical field
The utility model relates to the reactive power compensator in low-voltage network technical field, particularly the quick harmonics restraint reactive power compensator of a kind of intelligent integrated formula.
Background technology
The reactive power compensator of traditional combination switch switching inductance capacitance is owing to adopting mechanical switch switching, response speed is slow, shove large, and action is long for interval time, namely to wait until that capacitor discharge terminates just to drop into action next time, can not with the change of reactive load electric current Rapid Variable Design, the electricity consumption being not suitable for load frequent variations is on-the-spot.And in net during multiple stage reactive power compensator networking work, main frame and from only having a kind of control mode of bus communication between machine, outside the time delay of removing mechanical switch itself, switching response speed is still subject to the impact of bus communication time delay, and when bus communication is interfered, device cannot normal switching.
Utility model content
Technical problem to be solved in the utility model is, overcome the shortcoming of prior art, provide one just genuine operating passing zero, no-flashy-flow, without overvoltage, without impact, switching, the quick harmonics restraint reactive power compensator of intelligent integrated formula is faster responded to capacitor and electrical network.
In order to solve above technical problem, the utility model provides a kind of intelligent integrated formula quick harmonics restraint reactive power compensator, comprise control unit, described control unit comprises zero passage detection unit and controllable silicon driver element, it is characterized in that: also comprise switching compensating unit, described switching compensating unit comprises the first silicon controlled module, the second silicon controlled module, the first reactor, the second reactor, the 3rd reactor and corner connection capacitor; The anode tap of described first silicon controlled module is connected with the first phase line of outside three phase mains, cathode terminal is connected with the first reactor, the anode tap of described second silicon controlled module is connected with the third phase line of outside three phase mains, cathode terminal is connected with the second reactor, be connected with corner connection capacitor after described first, second, third reactor parallel connection, the described 3rd reactor other end is connected with the second phase line of outside three phase mains; Negative and positive the two poles of the earth of described first silicon controlled module are parallel with the first resistance capaciting absorpting circuit, second silicon controlled module negative and positive the two poles of the earth are parallel with the second resistance capaciting absorpting circuit.
Described controllable silicon driver element is connected respectively with the control pole of the first silicon controlled module, the second silicon controlled module, and described zero passage detection unit is connected respectively with negative and positive the two poles of the earth of the first silicon controlled module, the second silicon controlled module.
The technical scheme that the utility model limits further is:
Further, between switching compensating unit and outside three phase mains, circuit breaker and internal current instrument transformer is also in series with.
Further, described control unit also comprises internal current detection port, and described internal current detection port is connected with internal current instrument transformer.
Further, described control unit also comprises temperature detection port, man-machine display port, power port and bus communication and level controling signal input port.
Further, described reactor, corner connection capacitor, the first silicon controlled module and the second silicon controlled module are built-in with temperature sensor, and described temperature sensor output signal is connected to the temperature detection port of control unit.
Further, also comprise reactor fan and radiator fan, described fan is connected with the signal controlling port of described control unit.
Further, the single-chip microcomputer of described control unit adopts the STM32F100RBT6 based on ARM platform.
Operation principle of the present utility model is: the voltage, the current signal that are gathered three phase network by synthesis observe and control device, analyze, calculate the no-power vacancy needing to compensate, switching control signal is exported, to the control unit of described device by bus communication or Automatic level control output port; The zero cross detection circuit of described control unit detects the zero cross signal at controllable silicon two ends, and according to the switching control signal that synthesis observe and control device provides, determines the operating passing zero moment, switching signal is delivered to the controllable silicon drive circuit of described control unit; The controllable silicon drive circuit of described control unit exports start pulse signal according to the control signal received, and start pulse signal is passed to the silicon controlled module of described switching compensating unit, controls the break-make of silicon controlled module; Described switching compensating unit exports offset current according to the break-make of silicon controlled module, and offset current is delivered to electrical network through circuit breaker.
The beneficial effects of the utility model are: this device synthesis observe and control device supports the use, and realizes intelligent networking, can provide bus, level and Hybrid mode three kinds of control modes, can hold at most 32 reactive power compensators in net.When using the utility model, for the three phase network of load frequent variations, fast response time, operating passing zero, no-flashy-flow, without arcing, without the need to electric discharge can again drop into, can harmonic inhabitation electric current and flickering electric current, and provide required reactive power compensation fast for the power consumption equipment of load frequent variations.
Accompanying drawing explanation
Fig. 1 is utility model works schematic diagram.
Fig. 2 is the zero cross detection circuit schematic diagram in the utility model in control unit.
Fig. 3 is the controllable silicon drive circuit schematic diagram in the utility model in control unit.
Embodiment
embodiment 1
The quick harmonics restraint reactive power compensator of a kind of intelligent integrated formula that the present embodiment provides, as shown in Figure 1: comprise control unit and switching compensating unit, control unit comprised controllable silicon driver element, zero passage detection unit, internal current detection port, temperature detection port (reactor, capacitor, controllable silicon, ambient temperature), man-machine display panel, bus communication and level controling signal input port.
Switching compensating unit comprises the first silicon controlled module, the second silicon controlled module, the first reactor, the second reactor, the 3rd reactor and corner connection capacitor.
A1, K1 end of the first silicon controlled module, g1 end, A2, K2 end of the second silicon controlled module, the control signal end of g2 end difference access control unit.The A phase outlet of the A1 termination circuit breaker of the first silicon controlled module, K1 termination first reactor, the C phase outlet of the A1 termination circuit breaker of the second silicon controlled module, K1 termination the 3rd reactor.
Controllable silicon drive circuit provides the g1 end of drive pulse signal to the first silicon controlled module, the g2 end of the second silicon controlled module.
The zero cross detection circuit of A1, K1 end of the first silicon controlled module, A2, K2 end difference access control unit of the second silicon controlled module.
The internal current signal that internal current instrument transformer exports is connected to internal current testing circuit.The output signal of reactor, capacitor-embedded temperature sensor, silicon controlled temperature sensor and environment temperature sensor is connected to temperature detection port.Bus communication circuit is connected with the communication terminal of measure and control device and other reactive power compensators, and the level controling signal that measure and control device exports is connected to the level controling signal input port of reactive power compensator.
As shown in Figure 2, zero cross detection circuit in control unit described in the utility model, be detected as example with A phase silicon control zero-cross, R1 one end connects K1, and the other end connects R2, R3 successively, R4 one end connects K2, the other end connects R5, R6 successively, and the other end of R3, R6 connects the input of the output connection N1 of V1, V1, output one end of N1 connects 3.3V power supply, and the other end connects output zero cross signal Zero.Wherein K1, K2 end connects A1, K1 end of the first silicon controlled module in described switching compensating unit respectively, and resistance R1 ~ R6 plays metering function, and rectifier bridge stack V1 is half-wave sinusoidal voltage waveform rectification, optocoupler N1 plays buffer action, work as K1, when the voltage at K2 two ends is equal, optocoupler ends, export as low level, time unequal, export as high level, because the method uses current lead-through optocoupler, possess certain anti-harmonic wave ability, antijamming capability is better.Namely the operating passing zero of capacitor needs to judge according to this zero cross signal.
As shown in Figure 3, controllable silicon drive circuit in control unit described in the utility model, for A phase controllable silicon drive circuit, A_CTRL connects R6 successively, R7, Q3, the output 3 of Q3 connects R5, the other end of R5 connects Q2, R4, the output 3 of Q2 connects and connects R1 successively, C2, R3, the other end of R1 connects Q1, the output 2 of Q1 connects D3, Z1, the other end of Z1 connects T1, the two-way output of T1 connects D1 respectively, C1, R2, D2 and D4, C3, R2, D5, one end of D2 connects G1, the other end connects K1, one end of D5 connects G2, the other end connects K2.Bidirectional triode thyristor module is driven to trigger its conducting by pulse transformer T1, wherein the driving circuit section of pulse transformer T1 adopts metal-oxide-semiconductor Q1 to drive, A_CTRL is the Trig control signal port that single-chip microcomputer sends, after monolithic processor resetting, A_CTRL is low level, triode Q3 not conducting, Q2 also not conducting, metal-oxide-semiconductor Q1 not conducting, when ensureing that single-chip microcomputer powers on, pulse transformer does not work, when A_CTRL sets high level, triode Q3 conducting, Q2 is conducting also, metal-oxide-semiconductor Q1 conducting, pulse transformer two ends add 12V voltage, produce trigger current, conducting silicon controlled module.Single-chip microcomputer, after receiving switching signal, can send drive pulse signal at the zero-acrross ing moment of voltage, and drop into capacitor, input time series, according to first dropping into C phase controllable silicon, after judging that C phase drops into, then drops into A phase silicon controlled module.
During work, primary current instrument transformer gathers the current signal of electrical network, and current signal is passed to synthesis observe and control device, synthesis observe and control device inside gathers voltage signal, and voltage, current signal are carried out analyzing, calculating, obtain the required no-power vacancy compensated, and judge whether to carry out switching operation to described device according to current reactive power and power factor.
When current reactive power is greater than zero and power factor is less than target power factor, synthesis observe and control device provides and drops into order, by bus communication port or Automatic level control port to the control unit of auto levelizer; The zero cross detection circuit of device control units detects the zero cross signal at controllable silicon two ends, and after receiving the input order that synthesis observe and control device provides, in the voltage zero-cross moment, send start pulse signal, trigger bidirectional triode thyristor module, every half cycle triggers its conducting in turn, described like this switching compensating unit exports offset current, offset current is delivered to electrical network through circuit breaker, compensate for the no-power vacancy of electrical network, and power factor is brought up to target power factor.
When current reactive power is less than zero or power factor is greater than target power factor, synthesis observe and control device provides excision order, by bus communication port or Automatic level control port to the control unit of auto levelizer; The controllable silicon drive circuit of device control units removes start pulse signal, turns off the silicon controlled module of described device switching compensating unit, cuts off capacitor, reactor path.
The single-chip microcomputer of the present embodiment control unit adopts the STM32F100RBT6 based on ARM platform; Silicon controlled drives and generates triggering drive singal by pulse transformer, and the model of pulse transformer is KMB418-311, and be controllable silicon dedicated trigger transformer, pulsewidth reliably can trigger controllable silicon at more than 20us.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.
Claims (7)
1. the quick harmonics restraint reactive power compensator of intelligent integrated formula, it is characterized in that: comprise control unit and switching compensating unit, described control unit comprises zero passage detection unit and controllable silicon driver element;
Described switching compensating unit comprises the first silicon controlled module, the second silicon controlled module, the first reactor, the second reactor, the 3rd reactor and corner connection capacitor; The anode tap of described first silicon controlled module is connected with the first phase line of outside three phase mains, cathode terminal is connected with the first reactor, the anode tap of described second silicon controlled module is connected with the third phase line of outside three phase mains, cathode terminal is connected with the second reactor, be connected with corner connection capacitor after described first, second, third reactor parallel connection, the described 3rd reactor other end is connected with the second phase line of outside three phase mains; Negative and positive the two poles of the earth of described first silicon controlled module are parallel with the first resistance capaciting absorpting circuit, second silicon controlled module negative and positive the two poles of the earth are parallel with the second resistance capaciting absorpting circuit;
Described controllable silicon driver element is connected respectively with the control pole of the first silicon controlled module, the second silicon controlled module, and described zero passage detection unit is connected respectively with negative and positive the two poles of the earth of the first silicon controlled module, the second silicon controlled module.
2. the quick harmonics restraint reactive power compensator of intelligent integrated formula according to claim 1, is characterized in that: between switching compensating unit and outside three phase mains, be also in series with circuit breaker and internal current instrument transformer.
3. the quick harmonics restraint reactive power compensator of intelligent integrated formula according to claim 2, is characterized in that: described control unit also comprises internal current detection port, and described internal current detection port is connected with internal current instrument transformer.
4. the quick harmonics restraint reactive power compensator of intelligent integrated formula according to claim 1, is characterized in that: described control unit also comprises temperature detection port, man-machine display port, power port and bus communication and level controling signal input port.
5. the quick harmonics restraint reactive power compensator of intelligent integrated formula according to claim 4, it is characterized in that: described reactor, corner connection capacitor, the first silicon controlled module and the second silicon controlled module are built-in with temperature sensor, described temperature sensor output signal is connected to the temperature detection port of control unit.
6. the quick harmonics restraint reactive power compensator of intelligent integrated formula according to claim 1, is characterized in that: also comprise reactor fan and radiator fan, and described fan is connected with the signal controlling port of described control unit.
7. the quick harmonics restraint reactive power compensator of the intelligent integrated formula according to any one of claim 1-6, is characterized in that: the single-chip microcomputer of described control unit adopts the STM32F100RBT6 based on ARM platform.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356467A (en) * | 2015-07-02 | 2016-02-24 | 如皋市图腾电力科技有限公司 | Intelligent harmonic suppression circuit |
| CN114156903A (en) * | 2021-12-02 | 2022-03-08 | 江苏现代电力科技股份有限公司 | Intelligent reactive compensation module control circuit and control method thereof |
| CN114336669A (en) * | 2022-03-14 | 2022-04-12 | 东方博沃（北京）科技有限公司 | Control method, device and equipment for rapid reactive compensation and storage medium |
-
2014
- 2014-12-09 CN CN201420771565.5U patent/CN204304446U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356467A (en) * | 2015-07-02 | 2016-02-24 | 如皋市图腾电力科技有限公司 | Intelligent harmonic suppression circuit |
| CN114156903A (en) * | 2021-12-02 | 2022-03-08 | 江苏现代电力科技股份有限公司 | Intelligent reactive compensation module control circuit and control method thereof |
| CN114336669A (en) * | 2022-03-14 | 2022-04-12 | 东方博沃（北京）科技有限公司 | Control method, device and equipment for rapid reactive compensation and storage medium |
| CN114336669B (en) * | 2022-03-14 | 2022-06-03 | 东方博沃（北京）科技有限公司 | Control method, device and equipment for rapid reactive compensation and storage medium |
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Address after: Jiangning District of Nanjing City, Jiangsu province Tong Road 211102 No. 101 000 home building Patentee after: JIANGSU NICETOWN ELECTRIC POWER AUTOMATION CO., LTD. Address before: Jiangning District of Nanjing City, Jiangsu province Tong Road 211102 No. 101 000 home building Patentee before: Jiangsu Nanzitonghua Electric Automation Co., Ltd. |