CN202840532U - Low-pressure three-phase load balancing device - Google Patents
Low-pressure three-phase load balancing device Download PDFInfo
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- CN202840532U CN202840532U CN 201220562939 CN201220562939U CN202840532U CN 202840532 U CN202840532 U CN 202840532U CN 201220562939 CN201220562939 CN 201220562939 CN 201220562939 U CN201220562939 U CN 201220562939U CN 202840532 U CN202840532 U CN 202840532U
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- 230000009471 action Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 238000012360 testing method 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
- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The utility model discloses a low-pressure three-phase load balancing device. The low-pressure three-phase load balancing device comprises a leakage circuit breaker, alternating current contactors and current transformers, wherein the input end of the leakage circuit breaker is connected with three-phase four-wire power cords; the phases A, B and C at the output end of the leakage circuit breaker are respectively divided into single phases by the current transformers and the alternating current contactors and are taken as output ends together with a null line of the leakage circuit breaker; pressure gauges are connected in parallel between the null line and the phases A, B and C, and indicator lights are connected in series between the null line and the phases A, B and C; the current transformers are connected in parallel with ampere meters; the alternating current contactors are connected in parallel with operation buttons; the leakage current breaker, the alternating current contactors and the current transformers are all arranged in a box body; and the ampere meters, the pressure gauges, the indicator lights and the operation buttons are all arranged on the surface of the box body. The low-pressure three-phase load balancing device can solve the problems of widespread blackout caused by unbalanced three-phase load, long-time blackout, complex implementation, poor safety and non-ideal adjusting effect, and can implement balance adjustment rapidly, simply, conveniently, safely and efficiently.
Description
Technical field
The utility model relates to a kind of low-voltage load three-phase imbalance zone load adjusting device, belongs to the power supply apparatus field, especially a kind of low voltage three-phase load equalizer.
Background technology
Low voltage electric network is because load character differs, the electricity consumption time is random strong, cause that three-phase load is uneven, in the circuit, terminal voltage is low.By adjusting the uneven conventional method of administering low-voltage of three-phase load be:
1, first platform district load is tested, calculated the three-phase load degree of unbalance, carry out again load adjustment.Adjust scheme by the personnel of power supply station according to the distribution transformer three-phase current unbalance, platform district beyond target carries out the load balancing adjustment to the three-phase current unbalance degree.
The personnel of power supply station hand-held " distribution transformer platform area circuit single-phase load distribution condition table " when 2, adjusting, begin the wiring situation of single-phase load is recorded and to fill in a form along low-voltage circuit from distribution transformer, again according to the data of " distribution transformer platform area circuit single-phase load distribution condition table ", reference is low-voltage platform area electric weight account closely over the past half year, the client is classified according to the electricity consumption classification, adjust plan.
3, then, the personnel of power supply station check along dead line and branched line, record sharing of load situation, at first carry out balanced adjustment to stopping the terminal contact of radio area, then carry out balanced adjustment to stopping the radio area tail end line, again the power failure platform is distinguished branch line and carry out balanced adjustment, carry out balanced adjustment to stopping the radio area main line at last.Must have a power failure to whole low-voltage platform area before adjusting, then the larger branch line of low-voltage circuit duty ratio be adjusted, be adjusted on the less phase line of load by the larger phase line of load.
4, T contact of every adjustment from handling work ticket, on-the-spot power failure, electrical verification, feud line, transferring load to end-of-job, needs at least 4 staff just can finish 3.5 hours average times spent.Both affect client's normal electricity consumption, caused again the electricity charge loss of power supply enterprise, also increased staff's labour intensity.
The utility model content
The technical problems to be solved in the utility model provides a kind of low voltage three-phase load equalizer, this device can solve and adjust the uneven large-area power-cuts of three-phase load, the time is long, implementation process is complicated, poor stability, the undesirable problem of adjustment effect, realizes quick, easy, safe, balanced adjustment efficiently.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of low voltage three-phase load equalizer, it is characterized in that comprising residual current circuit breaker, the A.C. contactor summation current transformer, the input of residual current circuit breaker connects respectively the three-phase four-wire power line, the A of the output of residual current circuit breaker, B, the C three-phase passes through respectively current transformer and A.C. contactor and is decomposed into single-phase, and with the zero line of residual current circuit breaker jointly as output, wherein zero line respectively with A, B, all be parallel with voltmeter between the C three-phase, be in series with indicator light, current transformer is in parallel with ammeter, A.C. contactor is in parallel with action button, residual current circuit breaker, the A.C. contactor summation current transformer all is arranged at box house, ammeter, voltmeter, indicator light and action button all are arranged at tank surface.
Said structure is described further, is serially connected with the time relay on the A phase power line between described A.C. contactor and the current transformer.
Said structure is described further, and the input of described residual current circuit breaker is provided with the anti-error type knife switch of three-phase and four-line.
Said structure is described further, and the rear board of described casing is provided with for fixing installing hole.
The beneficial effect that adopts technique scheme to produce is:
(1) improved execute-in-place efficient, time saving and energy saving: this device is installed on the branch line of platform district circuit, does not need that circuit He Tai district is had a power failure, need not step on bar and just can adjust at any time three-phase load according to the load condition of each period, and the adjustment mode is flexible.Save and loaded down with trivial details handled work ticket, the power failure of platform district, feud line, sent a series of activities such as electricity, both shortened interruption duration, dwindled again power failure range, having reduced simultaneously personnel takies, reduced working strength, improved power supply reliability, guaranteed that the client balance of voltage is stable;
(2) strengthened the operability that low-voltage load is adjusted, flexible.Use this device to save Road test, calculate degree of unbalance, handle work ticket, have a power failure and send a series of loaded down with trivial details work such as electric, can dynamically adjust at any time platform district tri-phase unbalance factor, strengthened the operability of degree of unbalance control;
(3) easy and simple to handle, safe and efficient: as long as raise over cap, to select the high phase of voltage, can be transferred on the needed phase line in moment once touching the button.In addition, the three-phase and four-line earth leakage protective device also has been installed in this device, the shell reliable ground, guaranteed on the one hand operating personnel's safety, can also play on the other hand the safety of protection user power utilization equipment, when subscriber's line short circuit, electric leakage, overload fault, earth leakage protective device tripping protection subscriber equipment;
(4) increased an obvious cut-off point: this device when repair and maintenance table case and following equipment, also can play the effect of branch switch except the rural area three-phrase burden balance is remained in the rational scope, has reduced low voltage electric network accident interruption scope;
(5) by the adjustment of distribution transforming three-phase load, distribution transforming three-phase load unbalance factor is controlled in the critical field, has reached the target of Effective Raise client voltage and reduction line loss.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the electric circuit constitute schematic diagram of the present utility model;
Fig. 2 is the utility model body structure;
Wherein: 1, anti-error type knife switch, 2, residual current circuit breaker, 3, the time relay, 4, current transformer, 5, A.C. contactor, 6, voltmeter, 7, ammeter, 8, indicator light, 9, action button.
Embodiment
With reference to the accompanying drawings as can be known, the utility model is specifically related to a kind of low voltage three-phase load equalizer, belong to the power supply apparatus field, this device is mainly by anti-error type knife switch 1, residual current circuit breaker 2, A.C. contactor 5, current transformer 4, the time relay 3, ammeter 7, voltmeter 6, indicator light 8, action button 9 parts form, the input of residual current circuit breaker 2 connects respectively the three-phase four-wire power line, the A of the output of residual current circuit breaker 2, B, the C three-phase passes through respectively current transformer 4 and A.C. contactor 5 and is decomposed into single-phase, and with the zero line of residual current circuit breaker 2 jointly as output, wherein zero line respectively with A, B, all be parallel with voltmeter 6 between the C three-phase, be in series with indicator light 8, current transformer 4 is in parallel with ammeter 7, A.C. contactor 5 is in parallel with action button 9, residual current circuit breaker 2, A.C. contactor 5 summation current transformers 4 all are arranged at box house, ammeter 7, voltmeter 6, indicator light 8 and action button 9 all are arranged at tank surface.
Wherein, cabinet shell is stainless steel, wide 500 mm, and high 600mm, voltmeter: 0-500V, pointer, numeral all can; The common interchange indicator light of ammeter: 0-150A and indicator light: 220V, A.C. contactor is the core component of this device, requires reliable in quality.
Only about 1400 yuan, cost is low, is suitable for popularization for this device total cost.Wherein: 320 yuan of stainless steel casings, 120 yuan of residual current circuit breaker, 60 yuan on anti-error type knife switch, 360 yuan of A.C. contactors (120 yuan /), intelligent voltage table 240 yuan (80 yuan /).
As shown in Figure 2, the rear board of this device box is provided with for 4 fixing installing holes, needs only and stamps on the wall setscrew by size, this device is fixed on the wall get final product, and installs simple, convenient.Draw lower three-phase and four-line by the electric pole place and be connected to this to install anti-error type knife switch 1 suitable for reading, then outlet is connected to output by sign and gets final product.During adjustment, at first show according to voltage, electric current and the indication of relay indicating light, choose needed phase line, then open over cap and press action button corresponding to needed phase line 9 and namely be adjustable on the needed phase line.Then build over cap, i.e. end of operation.
After the line outage, the A.C. contactor automatic disconnection; After electricity was sent in recovery, A.C. contactor 5 automatic pick A phases did not need manual operation.When adjusting load, A.C. contactor 5 controls disconnect first the place phase line, then adhesive can not cause phase fault on the phase line of required adjustment.The anti-error type knife switch 1 of three-phase and four-line can be used as obvious cut-off point when user's side is overhauled.
At load unbalanced low-voltage platform area table case upside the utility model is installed, can see intuitively that three-phase voltage, current value and load place are separate, its load of mutually explanation that voltage is low is large, its load of mutually explanation that voltage is high is little, when voltage range exceeds 198～235 V, only need press the high corresponding button of voltage, just can be very easily the phase load that voltage is low switch to the high phase of voltage, make three-phrase burden balance, the low-voltage phase load reduces, voltage rises, thereby finishes load adjustment in moment.The utility model is used in the distribute-electricity transformer district circuit, the branch list case upside of terminal (needing pressure regulation), can adjust at any time three-phase load according to the load condition of each period, and the adjustment mode is flexible.
The utlity model has the following functions characteristics:
1. every all have voltage, electric current to show and relay indicating light mutually, can intuitively show electric current and voltage value and this load place phase line of every phase;
2. shell adopts stainless steel, and wiring is simple, and is easy for installation;
3. simple to operate, can adjust on the needed phase line in moment once touching the button;
4. after the line outage, the A.C. contactor automatic disconnection; After electricity was sent in recovery, the A.C. contactor automatic pick did not need manual operation;
5. when carrying out alternate adjustment conversion, by the button control A.C. contactor disconnect first the place phase line, then adhesive can not cause phase fault on the phase line of required adjustment;
6. the anti-error type knife switch of three-phase and four-line can be used as obvious cut-off point when user's side is overhauled, and the three-phase and four-line residual current circuit breaker can play electric leakage, short circuit, overladen protective effect;
7. can adjust according to demand the capacity configuration of this device.
Use the low voltage three-phase load equalizer, carrying out alternate load adjustment was 0.5 second by evolution in minimum 3.5 hours, had saved the time; Look into from many people live, record, calculate, have a power failure, construction, to one man operation, saved the labour, reduced interruption duration, improved amount of power supply, promoted fail safe; Solve the problem of three-phase imbalance, reduced voltage drop, promoted middle terminal temperature difference voltage, reduced platform district line loss, improved economic operation level.
Claims (4)
1. low voltage three-phase load equalizer, it is characterized in that comprising residual current circuit breaker, the A.C. contactor summation current transformer, the input of residual current circuit breaker connects respectively the three-phase four-wire power line, the A of the output of residual current circuit breaker, B, the C three-phase passes through respectively current transformer and A.C. contactor and is decomposed into single-phase, and with the zero line of residual current circuit breaker jointly as output, wherein zero line respectively with A, B, all be parallel with voltmeter between the C three-phase, be in series with indicator light, current transformer is in parallel with ammeter, A.C. contactor is in parallel with action button, residual current circuit breaker, the A.C. contactor summation current transformer all is arranged at box house, ammeter, voltmeter, indicator light and action button all are arranged at tank surface.
2. low voltage three-phase load equalizer according to claim 1 is characterized in that being serially connected with the time relay on the A phase power line between described A.C. contactor and the current transformer.
3. low voltage three-phase load equalizer according to claim 2 is characterized in that the input of described residual current circuit breaker is provided with the anti-error type knife switch of three-phase and four-line.
4. low voltage three-phase load equalizer according to claim 3 is characterized in that the rear board of described casing is provided with for fixing installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220562939 CN202840532U (en) | 2012-10-30 | 2012-10-30 | Low-pressure three-phase load balancing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220562939 CN202840532U (en) | 2012-10-30 | 2012-10-30 | Low-pressure three-phase load balancing device |
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| Publication Number | Publication Date |
|---|---|
| CN202840532U true CN202840532U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220562939 Expired - Fee Related CN202840532U (en) | 2012-10-30 | 2012-10-30 | Low-pressure three-phase load balancing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259276A (en) * | 2013-06-04 | 2013-08-21 | 长沙高升电子电器科技有限公司 | Automatic intelligent power distribution system and power distribution method |
| CN103354361A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Low-voltage three-phase load automation balancing device |
| CN104934993A (en) * | 2014-03-19 | 2015-09-23 | 罗宇凡 | Balance controller of high potential phase in single-phase electrically automatically switch three phases |
| CN104993504A (en) * | 2014-10-21 | 2015-10-21 | 中国矿业大学 | Unbalanced load charged commutation apparatus |
| CN107834371A (en) * | 2017-11-26 | 2018-03-23 | 安徽启源电力设备制造有限公司 | A kind of threephase load phasing switch case |
-
2012
- 2012-10-30 CN CN 201220562939 patent/CN202840532U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259276A (en) * | 2013-06-04 | 2013-08-21 | 长沙高升电子电器科技有限公司 | Automatic intelligent power distribution system and power distribution method |
| CN103259276B (en) * | 2013-06-04 | 2016-03-30 | 长沙高升电子电器科技有限公司 | Automated intelligent distribution system and distribution method |
| CN103354361A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Low-voltage three-phase load automation balancing device |
| CN104934993A (en) * | 2014-03-19 | 2015-09-23 | 罗宇凡 | Balance controller of high potential phase in single-phase electrically automatically switch three phases |
| CN104993504A (en) * | 2014-10-21 | 2015-10-21 | 中国矿业大学 | Unbalanced load charged commutation apparatus |
| CN107834371A (en) * | 2017-11-26 | 2018-03-23 | 安徽启源电力设备制造有限公司 | A kind of threephase load phasing switch case |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: BAODING POWER SUPPLY COMPANY Effective date: 20131021 Owner name: STATE GRID HEBEI ELECTRIC POWER COMPANY BAODING PO Effective date: 20131021 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 071000 BAODING, HEBEI PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131021 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: State Grid Hebei Electric Power Company Patentee after: Baoding Power Supply Branch Company, State Grid Hebei Electric Power Company Address before: 071000 No. 138 sunny north street, Hebei, Baoding Patentee before: Baoding Power Supply Company |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20181030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |