CN203301164U - Synchronous opening/closing controller - Google Patents
Synchronous opening/closing controller Download PDFInfo
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- CN203301164U CN203301164U CN2013203661083U CN201320366108U CN203301164U CN 203301164 U CN203301164 U CN 203301164U CN 2013203661083 U CN2013203661083 U CN 2013203661083U CN 201320366108 U CN201320366108 U CN 201320366108U CN 203301164 U CN203301164 U CN 203301164U
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- shut brake
- brake controller
- synchronous
- signal acquisition
- unit
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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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Abstract
The utility model discloses a synchronous opening/closing controller. The synchronous opening/closing controller comprises a signal acquisition processing unit and a breaker which are respectively connected with an electrical network, a synchronous control part which is respectively connected with the signal acquisition processing unit and the breaker, and a proximity switch which is connected with the synchronous control part. The synchronous opening/closing controller can settle problems of fewer functions, low control precision and poor safety and has advantages of many functions, good anti-interference capability, high control precision and good security.
Description
Technical field
The utility model relates to permanent-magnet breaker equipment, particularly, relates to a kind of synchronous divide-shut brake controller.
Background technology
In the distribution system of 10kV, the capacitive reactive power of capacitor group commonly used carrys out the lagging reactive power of balance perception power consumption equipment.
Traditional reactive power compensator, have that function is simple, networked capabilities is weak, the problem such as poor anti jamming capability, control precision are low, when opening-closing capacitor bank, can produce shove, overvoltage, easily power equipment is worked the mischief, even produce humorous wave interference, reduce the quality of power supply, affect power system stability.
If adopt synchronous (phase-controlled) technology opening-closing capacitor bank, can effectively suppress transient state and impact, reduce the harm to electrical network of impulse current and overvoltage.
In realizing process of the present utility model, the inventor finds in prior art to exist at least that function is few, poor anti jamming capability, control precision is low and the defect such as poor stability.
The utility model content
The purpose of this utility model is, for the problems referred to above, proposes a kind of synchronous divide-shut brake controller, the advantage many with practical function, that antijamming capability good, control precision is high and fail safe is good.
For achieving the above object, the technical solution adopted in the utility model is: a kind of synchronous divide-shut brake controller, comprise the signal acquisition process unit and the circuit breaker that with electrical network, are connected respectively, the Synchronization Control part that is connected with circuit breaker with described signal acquisition process unit respectively, and the approach switch that partly is connected with described Synchronization Control.
Further, above-described synchronous divide-shut brake controller, also comprise the man-machine interaction unit that partly is connected with described Synchronization Control.
Further, described man-machine interaction unit, comprise respectively the keyboard and the display that with described Synchronization Control, partly are connected.
Further, between described electrical network and signal acquisition process unit, be equipped with current transformer PT and voltage transformer CT.
Further, described current transformer comprises current transformer SCT254AK, and described voltage transformer CT comprises middle piezoelectricity minor voltage transformer or voltage transformer SPT204A; The metallic conduction joint of described middle piezoelectricity minor voltage transformer, adopt the copper joint.
Further, described Synchronization Control part, comprise respectively the central control unit that is connected with approach switch with described signal acquisition process unit, the drive circuit and the charging control unit that with described central control unit, are connected respectively, and the power supply that is connected with described drive circuit, charging control unit and circuit breaker respectively.
Further, described central control unit, comprise synchro switch processing unit DSP.
Further, described synchro switch processing unit DSP, comprise the TMS320F2812 processor.
Further, described signal acquisition process unit, comprise two AD7656 that detect for AC signal and condenser voltage, be used to utilizing inner A/D, complete the F2812 chip that environmental parameter is measured, and be used to the MAX II CPLD chip of the sequencing control that realizes the AD7656 chip; Described two AD7656 chips, be connected with described central control unit with MAX II CPLD chip by the F2812 chip respectively.
Further, it is characterized in that, described circuit breaker, comprise the arc control device that are connected with electrical network, and the permanent-magnet operating mechanism that is connected with arc control device, power supply and approach switch respectively.
The synchronous divide-shut brake controller of each embodiment of the utility model, owing to comprising signal acquisition process unit and the circuit breaker that is connected with electrical network respectively, the Synchronization Control part that is connected with circuit breaker with the signal acquisition process unit respectively, and the approach switch that partly is connected with Synchronization Control; Can effectively suppress transient state and impact, reduce the harm to electrical network of impulse current and overvoltage; Thereby can overcome in prior art that function is few, poor anti jamming capability, control precision is low and the defect of poor stability, the advantage many with practical function, that antijamming capability good, control precision is high and fail safe is good.
Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, becoming apparent, or understand by implementing the utility model.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
The accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms the part of specification, with embodiment mono-of the present utility model, is used from explanation the utility model, does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the operation principle schematic diagram of Synchronization Control part in the synchronous divide-shut brake controller of the utility model;
Fig. 2 is the operation principle schematic diagram of signal acquisition process unit in the synchronous divide-shut brake controller of the utility model;
Fig. 3 is the Synchronous Closing process schematic diagram of the synchronous divide-shut brake controller of the utility model when isolated neutral;
Fig. 4 is the simulation three-phase synchronous combined floodgate waveform schematic diagram of the synchronous divide-shut brake controller of the utility model.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
In order to overcome above-mentioned the deficiencies in the prior art, reduce the harm that when opening-closing capacitor bank, power equipment is caused, according to the utility model embodiment, as Figure 1-Figure 4, provide a kind of synchronous divide-shut brake controller.
This synchronous divide-shut brake controller, adopt the technology such as DSP, CPLD and high-speed a/d, realizes the synchronized sampling of alternating voltage, electric current, accurately the parameters such as calculating voltage, electric current, active power, reactive power and power factor; By measurement, control the data of supply voltage, ambient temperature and synchro switch divide-shut brake, predict the switch motion time, realize the synchronous switching of capacitor group, reduce to shove and superpotential harm, and complete reactive power compensation according to the voltage power-less integrated control strategy; Can effectively suppress transient state and impact, reduce the harm to electrical network of impulse current and overvoltage.
Referring to Fig. 1, the synchronous divide-shut brake controller of the present embodiment, comprise the Synchronization Control part, the signal acquisition process unit, circuit breaker and the approach switch that partly are connected with synchro switch respectively, circuit breaker is connected with electrical network successively with approach switch, and the signal acquisition process unit is connected with electrical network.The Synchronization Control part, comprise respectively the CPU [as synchronizeed switch process unit (DSP)] that is connected with approach switch with the signal acquisition process unit, the drive circuit and the charging control unit that with synchro switch processing unit (DSP), are connected respectively, and the power supply that is connected with drive circuit, charging control unit and circuit breaker respectively.Circuit breaker comprises the arc control device that are connected with electrical network, and the permanent-magnet operating mechanism that is connected with arc control device, power supply and approach switch respectively.
In actual the use, the synchronous divide-shut brake controller of above-described embodiment, can also comprise the man-machine interaction unit that is connected with synchro switch processing unit (DSP).This man-machine interaction unit, can comprise the keyboard that is connected with synchro switch processing unit (DSP) respectively and display etc.Between electrical network and signal acquisition process unit, current transformer (PT) and voltage transformer (CT) can be set, piezoelectricity minor voltage transformer during voltage transformer (CT) can adopt, the metallic conduction joint of middle piezoelectricity minor voltage transformer adopts the copper joint.
The synchronous divide-shut brake controller of above-described embodiment, can be applied to VQC.The core missions of VQC, it is the parameter that detects in real time circuit breaker running environment and working line, the operate time of prediction circuit breaker, calculate and detect the simultaneous operation point, according to control strategy, at voltage or the best phase place of electric current, complete combined floodgate or separating brake, complete the synchronous switching of capacitor group, with electro-magnetic transient effects such as shoving of eliminating initiatively that switching process produced and overvoltage.
In the above-described embodiments; central control unit is core; be mainly according to the voltage power-less integrated control strategy or receive the action command from relaying protection; utilize Synchronous Closing Technology to make circuit breaker under the control of system; appointment phase angle place at voltage, current waveform closes, and makes capacitor in the situation that drop into or cut out electric power system to self and system shock minimum.The signal acquisition process unit mainly completes the collection of the signals such as line voltage, current signal, switching value signal, ambient temperature, control voltage.Charging control unit completes the charging to power supply.Power supply is controlled permanent-magnet operating mechanism divide-shut brake coil discharge.The I/O interface drives relay by photoelectrical coupler and realizes the on-load voltage regulation of transformer split pole, keyboard and display finishing man-machine interaction function.Central control unit is according to the voltage power-less integrated control strategy or receive the action command from relaying protection; utilize Synchronous Closing Technology to make circuit breaker under the control of system; appointment phase angle place at voltage, current waveform closes, and makes capacitor in the situation that drop into or cut out electric power system to self and system shock minimum.
For example, central control unit, can adopt and both have digital signal processing capability, have again powerful incident management ability and the design of embedded Control function TMS320F2812 processor, the signal acquisition process unit has used the MAX II CPLD chip of new generation of Altera company, realizes the sequencing control of AD7656.That is to say, central control unit can adopt the design of TMS320F2812 processor.
The TMS320F2812 chip includes Flash memory in the sheet of 128k * 16, and external memory storage and abundant Peripheral Interface are arranged, and clock frequency is up to 150MHz.It had both had digital signal processing capability, had again powerful incident management ability and embedded Control function, was specially adapted to the observing and controlling occasion that data in enormous quantities are processed, and was 32 most advanced on present international market, that function is the most powerful fixed-point DSP chip.In the design of TMS320F2812 processor input/output interface circuit, the LC filter that has used magnetic strain, electric capacity to form, increased TVS protection device and photoelectrical coupler, strengthened antijamming capability.
Referring to Fig. 2, above-mentioned signal acquisition process unit completes the collection of the signals such as line voltage, current signal, switching value signal, ambient temperature, control voltage.
For example, the signal acquisition process unit can adopt the detection of two AD7656 for AC signal and condenser voltage, utilizes the inside A/D of F2812 to complete the measurement of environmental parameter.In AC signal measuring circuit, select current transformer SCT254AK, voltage transformer SPT204A to realize the isolation on electric of electrical network and terminal.
Above-mentioned charging control unit, can complete the charging to power supply.For example, the synchro switch control section, adopt the direct current operative power source of large capacity energy storage capacitor as permanent-magnet operating mechanism.The actuating voltage of permanent-magnet operating mechanism is DC 110V left and right, and the charge power supply of selecting capacitor is DC 85～125V, by relay contact, can control charge circuit.
The I/O interface of above-mentioned drive circuit, drive relay by photoelectrical coupler and realize the on-load voltage regulation of transformer split pole, and keyboard and display can the finishing man-machine interaction functions.
Referring to Fig. 3, in middle pressure hierarchical system, Shunt Capacitor Unit often adopts isolated neutral Y-connection mode, this moment, capacitor group ordering in launching was: when the difference of certain two phase voltage is zero, drop into simultaneously the compensation condenser group of this two-phase, this moment, capacitor group neutral point voltage was the mean value of this two phase voltage, this neutral point voltage will be zero (5ms) after 90 °, be also the moment of third phase voltage over zero this moment, at this moment drops into third phase capacitor group, will greatly reduce overvoltage.10n represents n half cycles.When controller is connected on tx and constantly receives that outside closes order, according to environmental parameter and historical operation data prediction, go out tclosing operate time of mechanism.Voltage magnitude x when the zero crossing by choosing voltage or the action command that calculates send, send to the order of closing a floodgate exactly constantly, and through after operate time tclosing, circuit breaker constantly closes a floodgate and puts in place at tm.The best time of capacitor disjunction is that 5～7ms by the contact of switch separately, to guarantee sufficiently long clearance between open contacts being arranged when the current over-zero blow-out, thereby reduces the probability of restriking greatly before current zero-crossing point.
Referring to Fig. 4, the experiment of simulation Synchronization Control, by three-phase voltage, electric current access controller respective terminal, contact one end of mechanism is through 10k Ω grounding through resistance, the other end adds direct voltage, select Tektronix TDS2024 four-way oscilloscope, according to the control strategy of the star-like connected mode of Shunt Capacitor Unit isolated neutral.Sequentially be followed successively by the operate time of this mechanism: B-C-A, and for closing operation, B, C two-phase are closed a floodgate and are put in place at the voltage magnitude place of equating, and A closes a floodgate and puts in place at the voltage zero-cross place mutually.For sub-switching operation, be B 5～7ms separating brake before current over-zero, C and A while separating brake after 10ms.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although with reference to previous embodiment, the utility model is had been described in detail, for a person skilled in the art, it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, or part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. synchronous divide-shut brake controller, it is characterized in that, comprise the signal acquisition process unit and the circuit breaker that with electrical network, are connected respectively, the Synchronization Control part that is connected with circuit breaker with described signal acquisition process unit respectively, and the approach switch that partly is connected with described Synchronization Control.
2. synchronous divide-shut brake controller according to claim 1, is characterized in that, also comprises the man-machine interaction unit that partly is connected with described Synchronization Control.
3. synchronous divide-shut brake controller according to claim 2, is characterized in that, described man-machine interaction unit comprises respectively the keyboard and the display that with described Synchronization Control, partly are connected.
4. synchronous divide-shut brake controller according to claim 1, is characterized in that, between described electrical network and signal acquisition process unit, is equipped with current transformer PT and voltage transformer CT.
5. synchronous divide-shut brake controller according to claim 4, is characterized in that, described current transformer comprises current transformer SCT254AK, and described voltage transformer CT comprises middle piezoelectricity minor voltage transformer or voltage transformer SPT204A; The metallic conduction joint of described middle piezoelectricity minor voltage transformer, adopt the copper joint.
6. the described synchronous divide-shut brake controller of any one according to claim 1-5, it is characterized in that, described Synchronization Control part, comprise respectively the central control unit that is connected with approach switch with described signal acquisition process unit, the drive circuit and the charging control unit that with described central control unit, are connected respectively, and the power supply that is connected with described drive circuit, charging control unit and circuit breaker respectively.
7. synchronous divide-shut brake controller according to claim 6, is characterized in that, described central control unit comprises synchro switch processing unit DSP.
8. synchronous divide-shut brake controller according to claim 7, is characterized in that, described synchro switch processing unit DSP, comprise the TMS320F2812 processor.
9. synchronous divide-shut brake controller according to claim 6, it is characterized in that, described signal acquisition process unit, comprise two AD7656 for AC signal and condenser voltage detection, for utilizing inner A/D to complete the F2812 chip that environmental parameter is measured, and be used to the MAX II CPLD chip of the sequencing control that realizes the AD7656 chip; Described two AD7656 chips, be connected with described central control unit with MAX II CPLD chip by the F2812 chip respectively.
10. the described synchronous divide-shut brake controller of any one according to claim 1-5, is characterized in that, described circuit breaker, comprise the arc control device that are connected with electrical network, and the permanent-magnet operating mechanism that is connected with arc control device, power supply and approach switch respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203661083U CN203301164U (en) | 2013-06-25 | 2013-06-25 | Synchronous opening/closing controller |
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| CN2013203661083U CN203301164U (en) | 2013-06-25 | 2013-06-25 | Synchronous opening/closing controller |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518515A (en) * | 2014-12-11 | 2015-04-15 | 无锡市锡容电力电器有限公司 | Circuit breaker device for reactive power compensation device |
| CN105355519A (en) * | 2015-11-30 | 2016-02-24 | 丽水学院 | Intelligent permanent magnet switch drive circuit and control method therefor |
| CN112014676A (en) * | 2020-09-11 | 2020-12-01 | 西安高压电器研究院有限责任公司 | Switching test device for capacitor device type test |
| CN114200348A (en) * | 2021-12-06 | 2022-03-18 | 云南电网有限责任公司保山供电局 | Method and system for judging line trip of stability control device |
-
2013
- 2013-06-25 CN CN2013203661083U patent/CN203301164U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518515A (en) * | 2014-12-11 | 2015-04-15 | 无锡市锡容电力电器有限公司 | Circuit breaker device for reactive power compensation device |
| CN105355519A (en) * | 2015-11-30 | 2016-02-24 | 丽水学院 | Intelligent permanent magnet switch drive circuit and control method therefor |
| CN112014676A (en) * | 2020-09-11 | 2020-12-01 | 西安高压电器研究院有限责任公司 | Switching test device for capacitor device type test |
| CN112014676B (en) * | 2020-09-11 | 2023-10-13 | 西安高压电器研究院股份有限公司 | Switching test device for capacitor device type test |
| CN114200348A (en) * | 2021-12-06 | 2022-03-18 | 云南电网有限责任公司保山供电局 | Method and system for judging line trip of stability control device |
| CN114200348B (en) * | 2021-12-06 | 2023-07-04 | 云南电网有限责任公司保山供电局 | Circuit tripping judgment method and system for stability control device |
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Granted publication date: 20131120 |
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| CX01 | Expiry of patent term |