CN203504183U - Manual phase-change switch system - Google Patents
Manual phase-change switch system Download PDFInfo
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- CN203504183U CN203504183U CN201320636385.1U CN201320636385U CN203504183U CN 203504183 U CN203504183 U CN 203504183U CN 201320636385 U CN201320636385 U CN 201320636385U CN 203504183 U CN203504183 U CN 203504183U
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- 230000005611 electricity Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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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
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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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
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model relates to the field of electrical power systems, and specifically relates to a manual phase-change switch system. The system comprises a power supply supplying power for the manual phase-change switch system, and a low-voltage AC mutual inductor acquiring real-time current. The low-voltage AC mutual inductor is connected with an ammeter. The system also comprises three button switches used for switching an A phase, a B phase, and a C phase, and three AC contactors. The three button switches and the three AC contactors are used to realize commutation control and mutual electric interlocking through a secondary circuit. The three AC contactors are also respectively connected with an indicator light. The manual phase-change switch system acquires user current in real time. When three-phase power exceeds an imbalance standard, a phase-changing circuit which is formed by the three button switches and the three AC contactors adjusts the three-phase power, switches the three phases of the A phase, the B phase, and the C phase, or disconnects with loads, so unbalance degree of the three-phase current is maintained in a allowable range, preventing distribution equipment from being burnt by imbalance three-phase current.
Description
Technical field
The utility model relates to technical field of power systems, particularly a kind of manual phase-change switch system.
Background technology
Power distribution station network is the chief component of rural power grids, and its running quality and operational efficiency affect the power supply quality of rural power grids, and good power supply quality is the guarantee of vast farmers life and production.Along with people's living standard improves constantly, power supply quality etc. is had higher requirement.At present, because the district's electricity consumption of countryside low-voltage electric distribution platform be take single phase power supply load as main, and load is larger with daily life system time fluctuation, (three-phase electricity is the three-phase alternating current that one group of amplitude equates, frequency equates, phase place differs from mutually 120 degree very easily to cause three-phase, be called A phase, B phase, C phase) load unbalanced degree value of being above standard (three-phase load unbalanced coefficient is 15%), and then causing that three-phase voltage is uneven, the light generation overvoltage mutually of loading causes controller switching equipment to burn.
Utility model content
The purpose of this utility model is: for prior art, exist because three-phase load is uneven and then cause the problem that controller switching equipment burns, a kind of phase-change switch circuit is provided, a kind of phase-change switch system of this phase-change switch circuit of application is provided simultaneously, by this phase-change switch system balancing three-phase load, ensure that controller switching equipment is unlikely to the three characteristics of the middle term load unbalanced and burn.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of manual phase-change switch system, be included as the power supply of described manual phase-change switch system power supply and for gathering the low-voltage alternating-current instrument transformer of real-time current, described low-voltage alternating-current instrument transformer connects ammeter, also comprise three push-button switches and three A.C. contactors that for A phase, B phase, C, switch mutually, described three push-button switches and three A.C. contactors are controlled and mutual electrical interlocks for realize commutation by secondary circuit, and three A.C. contactors also connect respectively an indicator light.
Preferably, described power supply is connected with for earth leakage protective three-phase and four-line circuit breaker and outlet secondary circuit breaker, and described three-phase and four-line circuit breaker is all connected with low-voltage alternating-current instrument transformer, three A.C. contactors with outlet secondary circuit breaker.The manual phase-change switch system access of the utility model TT system 380V power supply, output 220V power supply is concentrated dress table point for 220V need for electricity resident living power utility.
Further, described three push-button switches are respectively the first push-button switch, the second push-button switch and the 3rd push-button switch, and described three A.C. contactors are respectively the first A.C. contactor, the second A.C. contactor and the 3rd A.C. contactor; Described the second A.C. contactor, the first A.C. contactor and the 3rd A.C. contactor are connected successively, the second A.C. contactor connects the 3rd push-button switch, between the 3rd push-button switch and the 3rd A.C. contactor, be parallel with the first phase inversion circuit and the second phase inversion circuit, and the first phase inversion circuit and the different time work of the second phase inversion circuit; In the first commutation circuit, the second push-button switch, the first push-button switch, the first A.C. contactor, the second A.C. contactor connect successively, the second push-button switch is connected with the 3rd push-button switch, the second A.C. contactor is connected with the 3rd A.C. contactor, the second push-button switch two ends the second A.C. contactor in parallel; In the second commutation circuit, the first push-button switch, the second push-button switch, the second A.C. contactor, the first A.C. contactor connect successively, the first push-button switch is connected with the 3rd push-button switch, the first A.C. contactor is connected with the 3rd A.C. contactor, the first push-button switch two ends the first A.C. contactor in parallel.
Further, described manual phase-change switch system also comprises a switch-box, described switch-box comprises case lid and the casing coordinating with case lid, described ammeter, three indicator lights and three push-button switches are arranged on case lid, and described three A.C. contactors, low-voltage alternating-current instrument transformer, three-phase and four-line circuit breaker and outlet secondary circuit breaker are arranged at box house.On casing, be reserved with and wireless system communication the communication unit position of sending A.C. contactor action command, communication unit is set on casing, realize automatic commutation with manual commutation and deposit, can the automatic commutation of choice for use or manually commutation.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are: the manual phase-change switch system of the utility model, utilize low-voltage alternating-current instrument transformer Real-time Collection user electric current, and show in real time by ammeter, by the contrast of single phasing current value and three-phase operation current value, according to three-phase imbalance standard, (industry standard is 15%, in system, can be made as 10%), commutation circuit adjustment by three push-button switches and three A.C. contactor compositions is loaded, carry out A, B, the switching of C three-phase or disconnecting consumers, the degree of unbalance of three-phase current is remained in the safe range of permission, avoided controller switching equipment three characteristics of the middle term current imbalance and burnt, ensured the safe operation of controller switching equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation block diagram (containing indicator light and ammeter) of manual phase-change switch system in embodiment.
Fig. 2 is the manual schematic layout pattern of each parts in phase-change switch system in embodiment.
Fig. 3 is the phase-change switch circuit figure that in manual phase-change switch system, push-button switch and A.C. contactor form.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
With reference to figure 1, Fig. 2, the present embodiment has been enumerated a kind of manual phase-change switch system, comprise a switch-box, switch-box comprises case lid and the casing coordinating with case lid, on case lid, be furnished with ammeter PA, three indicator lights and three push-button switches, three push-button switches are respectively used to the switching controls of A phase, B phase and C phase, three indicator lights (HY in figure, HG, HR) show respectively a kind of different color, an indicator light is connected with an A.C. contactor, and indicator light is used to indicate current in which kind of single-phase electricity state.Box house is provided with three A.C. contactors, low-voltage alternating-current instrument transformer TA, three-phase and four-line circuit breaker Q F1 and outlet secondary circuit breaker Q F2; alternating current 220V power supply is connected with low-voltage alternating-current instrument transformer TA, three A.C. contactors with outlet secondary circuit breaker Q F2 by three-phase and four-line circuit breaker Q F1; for it provides electric energy; three-phase and four-line circuit breaker and outlet secondary circuit breaker are for earth leakage protective, and safeguards system is normally moved.Low-voltage alternating-current instrument transformer connects ammeter, and low-voltage alternating-current instrument transformer gathers user's real-time current, and ammeter shows user's real-time current in real time.Three push-button switches and three A.C. contactors are controlled and mutual electrical interlocks for realize commutation by secondary circuit, guarantee not occur the faults such as short-circuit between conductors in commutation process.
With reference to 3, three push-button switches of figure, be respectively the first push-button switch SB1, the second push-button switch SB2 and the 3rd push-button switch SB3, described three A.C. contactors are respectively the first A.C. contactor KM1, the second A.C. contactor KM2 and the 3rd A.C. contactor KM3; Described the second A.C. contactor KM2, the first A.C. contactor KM1 and the 3rd A.C. contactor KM3 connect successively, the second A.C. contactor KM2 connects the 3rd push-button switch SB2, between the 3rd push-button switch SB3 and the 3rd A.C. contactor KM3, be parallel with the first phase inversion circuit and the second phase inversion circuit, and the first phase inversion circuit and the different time work of the second phase inversion circuit; In the first commutation circuit, the second push-button switch SB2, the first push-button switch SB1, the first A.C. contactor KM1, the second A.C. contactor KM2 connect successively, the second push-button switch SB2 is connected with the 3rd push-button switch SB3, the second A.C. contactor KM2 is connected with the 3rd A.C. contactor KM3, the second push-button switch SB2 two ends the second A.C. contactor KM2 in parallel; In the second commutation circuit, the first push-button switch SB1, the second push-button switch SB2, the second A.C. contactor KM2, the first A.C. contactor KM1 connect successively, the first push-button switch SB1 is connected with the 3rd push-button switch SB3, the first A.C. contactor KM1 is connected with the 3rd A.C. contactor KM3, the first push-button switch SB1 two ends the first A.C. contactor KM1 in parallel.
More specifically, the normally opened contact end of the first A.C. contactor KM1 connects the normally opened contact end of the second A.C. contactor KM2, and the normally opened contact end of the first A.C. contactor KM1 connects the coil input end of the 3rd A.C. contactor KM3 simultaneously.The normally opened contact end of the second A.C. contactor KM2 connects the break contact end of the 3rd push-button switch SB3.The break contact end of the second push-button switch SB2 connects the make contact end of the 3rd push-button switch SB3, the make contact end of the second push-button switch SB2 connects the break contact end of the first push-button switch SB1, the make contact end of the first push-button switch SB1 connects the normally opened contact end of the first A.C. contactor KM1, the normally opened contact end of the first A.C. contactor KM1 connects the coil input end of the second A.C. contactor KM2, the coil input end of the second A.C. contactor KM2 connects the coil input end of the 3rd A.C. contactor KM3, the coil input end of the second A.C. contactor KM2 is also parallel to the two ends of the second push-button switch SB2, form the first commutation circuit.The break contact end of the first push-button switch SB1 also connects the make contact end of the 3rd push-button switch SB3, the make contact end of the first push-button switch SB1 connects the break contact end of the second push-button switch SB2, the make contact end of the second push-button switch SB2 connects the normally opened contact end of the second A.C. contactor KM2, the normally opened contact end of the second A.C. contactor KM2 connects the coil input end of the first A.C. contactor KM1, the coil input end of the first A.C. contactor KM1 connects the coil input end of the 3rd A.C. contactor KM3, the coil input end of the first A.C. contactor KM1 is also parallel to the two ends of the first push-button switch SB1, form the second commutation circuit.
As shown in Figure 2, the first push-button switch SB1(in the first commutation circuit or the second push-button switch SB2) while disconnecting, the first push-button switch SB1(in the second commutation circuit or the second push-button switch SB2) closure, the first commutation circuit and the second commutation circuit can not act on simultaneously, by the corresponding push-button switch of Manual press, can realize the conversion of the first commutation circuit and the second commutation circuit, and then realize A, B, switching between C three-phase electricity, the degree of unbalance of three-phase current is remained in the safe range of permission, avoided controller switching equipment three characteristics of the middle term current unbalance factor be above standard and burn, ensured the safe operation of controller switching equipment.Switch-box can be used in conjunction with according to actual needs, initial position can be separately positioned on to A phase, B phase, C phase (automatically getting back to initial phase electricity consumption after power failure).
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (4)
1. a manual phase-change switch system, it is characterized in that, be included as the power supply of described manual phase-change switch system power supply and for gathering the low-voltage alternating-current instrument transformer of real-time current, described low-voltage alternating-current instrument transformer connects ammeter, also comprise three push-button switches and three A.C. contactors that for A phase, B phase, C, switch mutually, described three push-button switches and three A.C. contactors are controlled and mutual electrical interlocks for realize commutation by secondary circuit, and three A.C. contactors also connect respectively an indicator light.
2. manual phase-change switch system according to claim 1; it is characterized in that; described power supply is connected with for earth leakage protective three-phase and four-line circuit breaker and outlet secondary circuit breaker, and described three-phase and four-line circuit breaker is all connected with low-voltage alternating-current instrument transformer, three A.C. contactors with outlet secondary circuit breaker.
3. manual phase-change switch system according to claim 1, it is characterized in that, described three push-button switches are respectively the first push-button switch, the second push-button switch and the 3rd push-button switch, and described three A.C. contactors are respectively the first A.C. contactor, the second A.C. contactor and the 3rd A.C. contactor; Described the second A.C. contactor, the first A.C. contactor and the 3rd A.C. contactor are connected successively, the second A.C. contactor connects the 3rd push-button switch, between the 3rd push-button switch and the 3rd A.C. contactor, be parallel with the first phase inversion circuit and the second phase inversion circuit, and the first phase inversion circuit and the different time work of the second phase inversion circuit; In the first commutation circuit, the second push-button switch, the first push-button switch, the first A.C. contactor, the second A.C. contactor connect successively, the second push-button switch is connected with the 3rd push-button switch, the second A.C. contactor is connected with the 3rd A.C. contactor, the second push-button switch two ends the second A.C. contactor in parallel; In the second commutation circuit, the first push-button switch, the second push-button switch, the second A.C. contactor, the first A.C. contactor connect successively, the first push-button switch is connected with the 3rd push-button switch, the first A.C. contactor is connected with the 3rd A.C. contactor, the first push-button switch two ends the first A.C. contactor in parallel.
4. according to the manual phase-change switch system described in claim 2 or 3, it is characterized in that, described manual phase-change switch system also comprises a switch-box, described switch-box comprises case lid and the casing coordinating with case lid, described ammeter, three indicator lights and three push-button switches are arranged on case lid, and described three A.C. contactors, low-voltage alternating-current instrument transformer, three-phase and four-line circuit breaker and outlet secondary circuit breaker are arranged at box house.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320636385.1U CN203504183U (en) | 2013-10-15 | 2013-10-15 | Manual phase-change switch system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320636385.1U CN203504183U (en) | 2013-10-15 | 2013-10-15 | Manual phase-change switch system |
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| Publication Number | Publication Date |
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| CN203504183U true CN203504183U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320636385.1U Expired - Lifetime CN203504183U (en) | 2013-10-15 | 2013-10-15 | Manual phase-change switch system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794179A (en) * | 2019-11-27 | 2020-02-14 | 国网天津市电力公司 | Quick split-phase switcher of alternating current loop |
| CN112233931A (en) * | 2020-09-23 | 2021-01-15 | 国网山东省电力公司潍坊供电公司 | Load switch device with PT (potential transformer) and installation construction method |
| CN113972674A (en) * | 2021-11-15 | 2022-01-25 | 国网四川省电力公司广安供电公司 | Low-voltage phase change switch with electric locking function, system and method |
-
2013
- 2013-10-15 CN CN201320636385.1U patent/CN203504183U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794179A (en) * | 2019-11-27 | 2020-02-14 | 国网天津市电力公司 | Quick split-phase switcher of alternating current loop |
| CN112233931A (en) * | 2020-09-23 | 2021-01-15 | 国网山东省电力公司潍坊供电公司 | Load switch device with PT (potential transformer) and installation construction method |
| CN112233931B (en) * | 2020-09-23 | 2023-09-29 | 国网山东省电力公司潍坊供电公司 | Load switch device with PT and installation construction method |
| CN113972674A (en) * | 2021-11-15 | 2022-01-25 | 国网四川省电力公司广安供电公司 | Low-voltage phase change switch with electric locking function, system and method |
| CN113972674B (en) * | 2021-11-15 | 2023-12-22 | 国网四川省电力公司广安供电公司 | Low-voltage phase change switch with electric locking function, system and method |
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Granted publication date: 20140326 |