CN201789337U - Phase-selecting switch-on and switch-off controller - Google Patents
Phase-selecting switch-on and switch-off controller Download PDFInfo
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- CN201789337U CN201789337U CN2010202498485U CN201020249848U CN201789337U CN 201789337 U CN201789337 U CN 201789337U CN 2010202498485 U CN2010202498485 U CN 2010202498485U CN 201020249848 U CN201020249848 U CN 201020249848U CN 201789337 U CN201789337 U CN 201789337U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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Abstract
The utility model discloses a phase-selecting switch-on and switch-off controller which comprises a central processing unit (CPU) module, an alternating-current analog input plug-in unit, a switch quantity transmitter signal input plug-in unit, a power module and a switch quantity output plug-in unit. The phase-selecting switch-on and switch-off controller can actively eliminate the electromagnetic transient effects such as inrush current, overvoltage and the like, is beneficial to the stabilization of the system voltage, and prolongs the maintenance period and the service life of a circuit breaker and power equipment.
Description
Technical field
The utility model relates to a kind of circuit breaker and selects phase divide-shut brake control device, is applicable to the choosing deciliter control mutually of the power equipment in Exchange Station and the DC converter station.
Background technology
Promote in state net company under the overall background of research extra-high voltage alternating current-direct current technology of transmission of electricity, overvoltage problem highlights in the extra-high voltage grid.Traditional inhibition is shoved and superpotential method is switching-on resistance to be installed or lightning arrester is set all exists following shortcoming:
1) installation and complex structure, poor reliability, involve great expense, the insulation system level is required harsh;
2) make the internal structure of circuit breaker complicated, increased intermediate link and reduced reliability;
3) single measure control effect is unsatisfactory under some situation, still need assist with other measures and calculation of parameter complexity;
4) there is the blind area in lightning arrester, and volume is big, and is easily aging, such as the operation that continues
VoltageCan damage zinc oxide valve plate etc.
5) proof cycle is short, and the maintenance activity amount is big, the maintenance cost height.
6) be not easy to realize intelligent control, be unfavorable for the digital improvement of transformer station.
Select phase divide-shut brake technology (Controlled Swithing is called for short CS) as reducing circuit breaker action transient voltage, the most direct effective solution route that shoves, have tangible economic benefit and control effect intuitively.At present, this field like product such as ABB (CAT series, Switchsync series), Siemens (PSD series), Areva (RPH2), Shenzhen intelligence (SID-3YL) etc.There is following shortcoming in its product: generally only adopt the single-phase voltage benchmark, no three-phase voltage benchmark function 1..2. bad adaptability does not possess self study, revises ability certainly: only at the switch of certain style number, or the external parameter compensation rate must be known conditions, can not obtain automatically in real time and revise.3. do not possess the function that compensation model and adaptive model are judged automatically and intelligence is switched.
The utility model content
The purpose of this utility model is: a kind of intelligent apparatus based on microprocessor of utility model, electrical characteristic, mechanical property and the Correlative Influence Factors of consideration circuit breaker are accurately controlled each best mutually deciliter phase place, to reduce switching overvoltage and to shove.
The utility model adopts following technical scheme for achieving the above object:
A kind of phase divide-shut brake control device that selects of the utility model, comprise that CPU module, ac analog are imported plug-in unit, the switching value transducer signal is imported plug-in unit, power module and switching value output inserter, the analog quantity that ac analog input plug-in unit inserts is: the three-phase or single-phase voltage signal, access circuit breaker circuit or the equipment side three-phase current signal that insert circuit breaker bus side; Opening into amount that switching value input plug-in unit inserts is: the order of electric power system divide-shut brake is opened into, circuit breaker three-phase closing position auxiliary contact and circuit breaker three-phase separating brake position auxiliary contact, the input of 4 road transmitters; The output of switching value input plug-in unit and ac analog input plug-in unit connects the input of CPU module respectively, the input of the output termination switching value output inserter of CPU module, the output of switching value output inserter connects phase-splitting combined floodgate node and phase-splitting separating brake node respectively; Power module (PWR) provides DC power supply for described control device.
The beneficial effects of the utility model: that can eliminate initiatively that circuit breaker deciliter process produced shoves and electro-magnetic transient effect such as overvoltage, can reduce the electric wearing and tearing of contact of breaker, prolongs the maintenance period and the useful life of breaker apparatus; For the extra-high voltage grid AC system, can significantly reduce the insulating requirements of extra-high voltage electric power equipment such as circuit, thereby can realize simplifying the design of grid structure and compact line.
Description of drawings
Fig. 1 is the utility model hardware module pie graph
Fig. 2 is the utility model functional configuration schematic diagram
Fig. 3 is the utility model phase selection record ripple control flow chart
Fig. 4 is single-phase voltage and three-phase voltage diagnostic logic figure
Wherein, Ua, Ub, Uc are respectively A, B, the current sampled value of C three-phase voltage, and Ua ', Ub ', Uc ' are respectively the last cycle sampled value of A, B, C three-phase current sampling point, Uk1 is for there being the pressure threshold value, Uk2 is each facial difference threshold value, and Uk3 is this facial difference threshold value, and Uk4 is not for there being the threshold value of pressure.
Embodiment
Be elaborated below in conjunction with the technical scheme of accompanying drawing to utility model:
As shown in Figure 1: the DC power supply of power module (PWR module) generator.Analog quantity input module (being the AC module) provides 3 road voltages and 3 road current sample passages, and real-time acquisition system voltage, current signal select the phase control program in voltage acquisition opening just often, otherwise this function of locking; Utilize current acquisition can accurately judge electric deciliter moment.The CPU module is except carrying out controlled divide-shut brake main program and coordinating each integrated circuit board, have concurrently a monitor control system deciliter order open into, the position contact open is gone into to connect three-phase breaker and is often opened auxilliary contact and the normally closed auxiliary contact of three-phase breaker, can utilize position signalling to determine to divide the conjunction in conjunction with actuating of relay time-delay.Switching value input plug-in unit (being the BI module) can insert 8 the tunnel standby open into, 4 road transmitter input interfaces are information such as collecting mechanism ambient temperature, control loop voltage in real time.Switching value output inserter (being the BO module) comprises that three-phase closes a floodgate and three-phase separating brake output dry contact, connects the breaking-closing operating loop respectively.In addition, the HMI human-machine interface module is used for human-computer dialogue.Fixed value adjusting time of repose curve can be passed through in inside, utilizes interpolation algorithm that time variable is transformed to the stand-by period compensation variable, and by fixed value adjusting prebreakdown time-delay, compensation electric combined floodgate of circuit breaker and mechanical closing time difference are implemented precise phase control.
As shown in Figure 2, automatically survey the PT signal that is inserted, automatically select three-phase or single-phase PT pattern and obtain the combined floodgate phase reference, when the instruction of outside divide-shut brake is opened into to the CPU board card, the utility model is taken all factors into consideration the influence of external parameters such as mechanism's ambient temperature, control loop voltage, time of repose to deciliter time, automatically calculate required time-delay, and control command is sent in phase-splitting.After command execution finishes, survey by the timely back production of CT current signal and to close a floodgate and separating brake moment, also can often open auxilliary contact and the normally closed auxiliary contact of three-phase breaker and survey circuit breaker position and change by inserting three-phase breaker in addition, the actual motion data that can write down this under adaptive model automatically be to be used for deciliter control of next time.
One, selects the phase control flow
Describe the specific implementation method of the utility model phase selection control in detail below in conjunction with accompanying drawing 3.With combined floodgate phase control under the capacitive load occasion compensation model is example, puts aside prebreakdown, and the match lock is in the system voltage zero crossing:
Be in non-action status when 1) the utility model normally moves, self-check program guarantees that hardware does not have damage.Gather the voltage and current signal in real time, electric voltage frequency is stable before closing a floodgate, and electric current is zero." the order input of closing a floodgate " for receiving the instruction moment of control system, the phase place that this instruction is sent has randomness.Promptly enter start-up routine after receiving this instruction.
2) after the startup, can survey automatically and record voltage over zero nearby, in the corresponding diagram 3 " zero crossing detection ", and with this initial moment of timing as the stand-by period variable.
3) breaker closing time parameter Tclose (triphase parameter is different, and this symbol is only represented the parameter of a certain specific phase, down together) deposits EEPROM in the definite value form.The action delay of device auxiliary relay be can not ignore, and is called secondary circuit time-delay Tcdly, is defined as software and sends the branch phase command and finish constantly to the output contact closure constantly.Correct mechanical closing time and electric closing time deviation, definition pre arcing time parameter Tpres for considering fracture insulation rate of descent RDDS curve.Put aside to be Tpres=0 in this example.
4) like this, the stand-by period variable Tdelay that closes a floodgate is:
Tdelay＝N*20ms-Tclose-Tcdly+Tpres
N is the integral multiple value of cycle, selection principle for just make Tdelay be on the occasion of and have the nargin of factors such as control loop voltage, mechanism's ambient temperature, time of repose to the combined floodgate time bias.
5) device obtains external influence factors and time of repose variable by leaving standstill timer in collection transducing signal and the program, and adopts the difference algorithm to obtain the compensation rate of each factor: temperature-compensating delay parameter Δ Twd, control loop voltage compensation delay parameter Δ Tyl, SF6 gas pressure delay compensation parameter Δ Tqy, oil pressure delay compensation parameter Δ Tyy and time of repose delay compensation parameter Δ Tjz.For improving control precision, the stand-by period variable further compensates to closing a floodgate:
Tdelay＝N*20ms-Tclose-Tcdly+Tpres+ΔTwd+ΔTyl+ΔTqy+ΔTyy+ΔTjz
6) control command is sent in zero crossing time-delay Tdelay phase-splitting.Breaker closing moment, install real-time back production current signal, by setting rational threshold determination stream is arranged.Close moment just at voltage over zero as the electric pass of Fig. 3, controlled combined floodgate overall process finishes.
Two, single-phase voltage, three-phase voltage intelligent diagnostics process
The utility model is gathered voltage in real time when normal operation, survey each road voltage automatically and insert, and is judged to be voltage acquisition just often three-phase PT pattern or the just often single-phase PT pattern of voltage acquisition respectively when satisfying following criterion:
1) arbitrary satisfied mutually in three-phase voltage: current voltage sample is greater than there being the pressure threshold value, and current sampling and all wavefront sampling difference are less than this facial difference threshold value, and all the other two-phase voltage samples are less than there not being the threshold value of pressure.Be judged to be single-phase PT pattern.
2) all satisfy when three-phase voltage: each phase voltage sampling is greater than there being the pressure threshold value, and the sampling difference is less than each facial difference threshold value between any two-phase, and the sampling of any phase voltage and all this phase voltage of wavefront sampling differences are less than this facial difference threshold value.Be judged to be three-phase PT pattern.
As shown in Figure 4, wherein, Ua, Ub, Uc are respectively A, B, the current sampled value of C three-phase voltage, Ua ', Ub ', Uc ' are respectively the last cycle sampled value of A, B, C three-phase current sampling point, Uk1 has the threshold value of pressure to be taken as 90% voltage rating, Uk2 is taken as 5% voltagerating for each facial difference threshold value, and Uk3 is taken as 5% voltagerating for this facial difference threshold value, and Uk4 is not taken as 10% voltagerating for there being the threshold value of pressure.If do not satisfy criterion as described in Figure 4, it is unusual then to be judged to be sampled value, report to the police " voltage sample is unusual " and locking controlled function.Satisfying under the normal and three-phase PT pattern situation of voltage sample, continuing to judge whether leading successively 120 ° of A, B, C three-phase voltage waveform phase differences, otherwise report to the police " the access phase sequence is wrong " and locking controlled function.Realized that so three-phase voltage and single-phase voltage insert self-diagnostic function, the voltage number of phases that automatic detection inserts is also obtained choosing and is controlled phase reference mutually, and the also locking of reporting to the police under and the wrong situation of phase sequence unusual at voltage sample.
Three. compensation model and adaptive model are judged and intelligent handoff functionality automatically:
Usually like product has general mode, compensation model, adaptive model, can move back control word by throwing according to field demand and freely adjust.Carry out simple phase control when general mode is intended to only grasp the circuit-breaker switching on-off temporal information,, do not consider the external factor influence so engineering is used seldom because of its logic is simple; Compensation model is considered external parameter to the normality influence of operate time, and control logic is more reasonable, and effect is better; Adaptive model is intended to intelligent record switch last time control actual act information, and revises the stand-by period variable in the closing operation that will implement, at the frequent occasion particularly suitable of operation.
The utility model is possessing under the various operational mode prerequisites, considers adaptive model and compensation model characteristics and advantage separately, proposes the operational mode that two kinds of pattern intelligence are switched.Implementation method is as follows:
1. time of repose timer T is set
Jz, determine the operation frequency by position back production information.
2. at T
Jz＜T
MkThe time (T
MkBe operation frequency threshold value), satisfy the precondition that adaptive model drops into automatically.
3. by gathering the current ambient temperature Tempr of mechanism, continue and judge whether satisfy | Tempr-Tempr ' |＜Tempr
MkWherein, ambient temperature when Tempr ' is last operation the, Tempr
MkBe temperature difference threshold value.
4. by gathering current control loop voltage Volt, continue to judge and whether satisfy | Volt-Volt ' |＜Volt
MkWherein, the control voltage when Volt ' is last operation the, Volt
MkBe threshold pressure differential.
5. if other all external parameters all satisfy constraints, the utility model automatically switches to and carries out this time control operation under the adaptive model.If do not satisfy any one constraints, switch the covering pattern of repaying and carry out control operation.
Claims (1)
1. one kind is selected phase divide-shut brake control device, it is characterized in that comprising that CPU module, ac analog are imported plug-in unit, the switching value transducer signal is imported plug-in unit, power module (PWR) and switching value output inserter, the analog quantity that ac analog input plug-in unit inserts is: the three-phase or single-phase voltage signal (PT), access circuit breaker circuit or the equipment side three-phase current signal (CT) that insert circuit breaker bus side; Opening into amount that switching value input plug-in unit inserts is: the order of electric power system divide-shut brake is opened into, circuit breaker three-phase closing position auxiliary contact and circuit breaker three-phase separating brake position auxiliary contact, the input of 4 road transmitters; The output of switching value input plug-in unit and ac analog input plug-in unit connects the input of CPU module respectively, the input of the output termination switching value output inserter of CPU module, the output of switching value output inserter connects phase-splitting combined floodgate node and phase-splitting separating brake node respectively; Power module (PWR) provides DC power supply for described control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202498485U CN201789337U (en) | 2010-07-06 | 2010-07-06 | Phase-selecting switch-on and switch-off controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202498485U CN201789337U (en) | 2010-07-06 | 2010-07-06 | Phase-selecting switch-on and switch-off controller |
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| Publication Number | Publication Date |
|---|---|
| CN201789337U true CN201789337U (en) | 2011-04-06 |
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ID=43821287
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202498485U Expired - Lifetime CN201789337U (en) | 2010-07-06 | 2010-07-06 | Phase-selecting switch-on and switch-off controller |
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| Country | Link |
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| CN (1) | CN201789337U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149865A (en) * | 2013-03-13 | 2013-06-12 | 绍兴电力局 | High-precision phase-selection control device |
| CN105071368A (en) * | 2015-09-01 | 2015-11-18 | 国家电网公司 | A breaker phase control suppressing method for power transmission line switching overvoltage |
| CN105140885A (en) * | 2015-08-18 | 2015-12-09 | 淮沪电力有限公司 | Exciting surge suppression device of main transformer |
| CN105513903A (en) * | 2015-12-03 | 2016-04-20 | 平高集团有限公司 | Debugging platform of circuit breaker |
| CN106208085A (en) * | 2016-08-31 | 2016-12-07 | 国网江苏省电力公司常州供电公司 | Chopper phase-controlled method based on frequency-tracking |
| CN107680853A (en) * | 2017-09-14 | 2018-02-09 | 南京南瑞继保电气有限公司 | Pre arcing time Forecasting Methodology based on breaker RDDS Parameter Self-learnings |
| CN110729711A (en) * | 2018-07-17 | 2020-01-24 | 国网江苏省电力有限公司常州供电分公司 | Phase selection switching-on and switching-off control device |
| CN110768223A (en) * | 2019-11-26 | 2020-02-07 | 珠海万力达电气自动化有限公司 | Control method for weakening bus inrush current of railway purification power supply device |
-
2010
- 2010-07-06 CN CN2010202498485U patent/CN201789337U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149865A (en) * | 2013-03-13 | 2013-06-12 | 绍兴电力局 | High-precision phase-selection control device |
| CN105140885A (en) * | 2015-08-18 | 2015-12-09 | 淮沪电力有限公司 | Exciting surge suppression device of main transformer |
| CN105071368A (en) * | 2015-09-01 | 2015-11-18 | 国家电网公司 | A breaker phase control suppressing method for power transmission line switching overvoltage |
| CN105071368B (en) * | 2015-09-01 | 2018-02-09 | 国家电网公司 | A kind of breaker phased suppressing method of transmission line of electricity switching overvoltage |
| CN105513903A (en) * | 2015-12-03 | 2016-04-20 | 平高集团有限公司 | Debugging platform of circuit breaker |
| CN106208085A (en) * | 2016-08-31 | 2016-12-07 | 国网江苏省电力公司常州供电公司 | Chopper phase-controlled method based on frequency-tracking |
| CN106208085B (en) * | 2016-08-31 | 2018-10-30 | 国网江苏省电力公司常州供电公司 | Breaker phase-controlled method based on frequency-tracking |
| CN107680853A (en) * | 2017-09-14 | 2018-02-09 | 南京南瑞继保电气有限公司 | Pre arcing time Forecasting Methodology based on breaker RDDS Parameter Self-learnings |
| CN110729711A (en) * | 2018-07-17 | 2020-01-24 | 国网江苏省电力有限公司常州供电分公司 | Phase selection switching-on and switching-off control device |
| CN110768223A (en) * | 2019-11-26 | 2020-02-07 | 珠海万力达电气自动化有限公司 | Control method for weakening bus inrush current of railway purification power supply device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |