CN105470973A - Improved low-voltage line voltage regulating device - Google Patents
Improved low-voltage line voltage regulating device Download PDFInfo
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- CN105470973A CN105470973A CN201510819780.7A CN201510819780A CN105470973A CN 105470973 A CN105470973 A CN 105470973A CN 201510819780 A CN201510819780 A CN 201510819780A CN 105470973 A CN105470973 A CN 105470973A
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- adjustable magnetic
- compensation transformer
- pressure regulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
-
- 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
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses an improved low-voltage line voltage regulating device. The device comprises an adjustable magnetic compensation transformer whose secondary coil is connected in series to a low-voltage distribution line. A primary coil of the adjustable magnetic compensation transformer is provided with a plurality of gears. An input terminal of the adjustable magnetic compensation transformer is connected in series with a load current transformer. An output terminal of the load current transformer is connected to a voltage-regulating automatic controller. An input terminal of the voltage-regulating automatic controller is connected to an input terminal and an output terminal of the low-voltage distribution line respectively, and an output terminal outputs a voltage regulating instruction which is used for adjusting the gears of the primary coil of the adjustable magnetic compensation transformer. The adjustable magnetic compensation transformer compensates a voltage of the low-voltage distribution line so that a voltage qualified rate is increased and losses are reduced; bypass operation is added; equipment itself and components are ensured not to be damaged; line losses are reduced and a service life is prolonged; and the device possesses characteristics that obvious voltage stabilization is achieved; operation is safe; the size is small; installation is convenient; an automation degree is high and so on.
Description
Technical field
The present invention relates to modified model low-voltage circuit regulator, belong to supply line and improve field.
Background technology
In recent years, local power load constantly increases, and causes the phenomenon of 220V low-voltage distribution network end " low-voltage " to happen occasionally, have even lower than 170V, can not reach residential electricity consumption standard 198V ~ 235V, have a strong impact on residential electricity consumption experience, user is to this strong reaction.
For above-mentioned situation, in August, 2014, two single phase low voltage circuit regulators (model is DUI-0.22-30/3.5) have been installed at democracy 3 village 4 society 3B regulator and society of time Marvin's military village 13 5B by great Ying company, improve the rate of qualified voltage of low-voltage circuit end.After running latter two moon, although find that this low-voltage circuit regulator has certain voltage regulation function, there is following problem:
1., when load boom period, there is the phenomenon of overload burning regulator coil.
2., when running into thunderstorm weather, lightning current can not be introduced the earth by regulator in time, burns out the phenomenon of lightning arrester.
Summary of the invention
The object of the present invention is to provide modified model low-voltage circuit regulator, mainly solve existing low-voltage circuit regulator not anti-overload function in actual motion, cause low-voltage circuit regulator in overladen situation just by problem that corresponding components and parts burn.
To achieve these goals, the technical solution used in the present invention is as follows:
Modified model low-voltage circuit regulator, comprise secondary coil and be connected on the compensation transformer of adjustable magnetic in low-voltage distributing line, the primary coil of the compensation transformer of this adjustable magnetic arranges multiple gear, the load current mutual-inductor for gathering load current signal is in series with at the input of the compensation transformer of adjustable magnetic, the output of load current mutual-inductor connects pressure regulation automatic controller, the input of this pressure regulation automatic controller is also connected respectively to input and the output of low-voltage distributing line, Gather and input voltage and output voltage also export pressure regulation instruction Uk, the voltage U o=Ui+ Δ U after compensating also is exported for the compensation transformer work of dynamic adjustments adjustable magnetic, regulator is made to work in pressure regulation pattern,
Also comprise that one end is connected on the secondary coil inlet wire of the compensation transformer of adjustable magnetic, the other end is connected to and controls closed/A.C. contactor KM1 of disconnecting in secondary coil outlet and by pressure regulation automatic controller, for the conversion of regulator mode of operation (bypass operation/pressure regulation operation).
Modified model low-voltage circuit regulator, by adjustable magnetic compensation transformer compensated line voltage, when pressure regulation automatic controller monitor line voltage distribution Ui on the low side time, automatically corresponding pressure regulation instruction Uk is sent, to produce suitable bucking voltage Δ U, be Uo=Ui+ Δ U by compensation for adjustable magnetic transformer output voltage dynamic adjustments, terminal temperature difference voltage promoted, meets normal electricity consumption requirement.
A.C. contactor KM1 is a switching device, for the conversion of regulator mode of operation (bypass operation/pressure regulation operation).Current transformer, for detecting the operating load electric current of regulator, realizes electric current instruction and defencive function.
Particularly, the compensation transformer core of described adjustable magnetic adopts silicon steel sheet, and winding adopts some gummed paper to solidify as insulating material, guarantees mechanical strength and the overall performance of winding.
Further, the output of the compensation transformer of described adjustable magnetic is also connected with automatic switching capacitor.Described automatic switching capacitor comprises three compensation branch roads parallel with one another, and every bar compensates branch road and includes the controlled rectifier group and electric capacity that are cascaded, and controlled rectifier group is made up of parallel with one another two reverse controlled rectifier and operating passing zero switch.By supporting automatic switching capacitor compensation low-voltage distributing line reactive power, finally with the device improving rate of qualified voltage He reduce the wastage.Intelligent capacitor realizes circuit reactive power compensation on the spot, reduces the idle conveying of circuit, realizes idle in-situ balancing, improves line voltage distribution quality.Intelligent capacitor is the intelligent electric power capacitor integrating control, protection, display, operating passing zero switch and power capacitor.
Again further, the secondary coil outlet of the compensation transformer of described adjustable magnetic is also connected with the A.C. contactor KM2 being controlled closed/disconnection by pressure regulation automatic controller, in parallel with A.C. contactor KM1 in the secondary coil outlet that this A.C. contactor KM2 is series at the compensation transformer of adjustable magnetic, this A.C. contactor KM1, KM2 are all located at automatic switching capacitor input.During operation, it is closed when A.C. contactor KM1, KM2 are different, the bypass increasing regulator runs (KM1 closes), regulator is excised rapidly from circuit, automatically switch to by-path running status, guarantee not cause damage to equipment itself and parts, reduce line loss, extend the useful life of regulator.
Again further, described pressure regulation automatic controller is also connected with wireless communication module and local storage.Service data teletransmission is carried out data monitoring and utilization to background computer, and realizes real time record function.
For avoiding broken by lightning regulator, in the lightning protection grounding network of regulator, be provided with many ground studs.
The course of work of the present invention is as follows:
1. when pressure regulation automatic controller monitor input voltage Ui normal time (>=198V, the highlyest be set to 220V), send bypass operating instruction, the normally closed point of contactor KM1 closes, normal battle disconnects, regulator works in bypass mode of operation, reducing line loss, extends adjustable magnetic compensation transformer useful life.
2. (the < 198V when pressure regulation automatic controller detects that input voltage Ui is on the low side, the highlyest be set to 220V), send pressure regulation operating instruction, contactor KM1 is often made war closed, normally closed disconnection, the normally closed point of contactor KM2 closes, disconnection of often making war, magnetic regulating device works in automatic Regulation operational mode, with lifting end utilization voltage.
3. the primary coil of the compensation transformer of adjustable magnetic has 3 gears, and pressure regulation automatic controller according to the change of the fluctuation of system voltage and customer charge, can be dynamically adapted to suitable gear, make output voltage Uo meet the need for electricity of terminal temperature difference all the time.
4. when the compensation transformer exception of adjustable magnetic or running current overload, pressure regulation automatic controller sends bypass operating instruction automatically, and the compensation transformer of adjustable magnetic is deactivated, to guarantee security of operation and the power supply continuously of device.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention compensates low-voltage distributing line voltage by the compensation transformer of adjustable magnetic, compensates low-voltage distributing line reactive power, finally with the device improving rate of qualified voltage He reduce the wastage by supporting automatic switching capacitor C.
(2) the present invention increases the bypass operation (KM1 closes) of regulator; when the compensation transformer exception of adjustable magnetic or running current overload; the compensation transformer of adjustable magnetic is excised rapidly from circuit; automatically switch to by-path running status; guarantee not cause damage to equipment itself and parts; reduce line loss, extend the useful life of regulator.
(3) the compensation transformer of adjustable magnetic of the present invention arranges three gears, selects suitable gear by pressure regulation automatic controller according to adjustable magnetic compensation transformer primary voltage and user's setting parameter, ensures the stable of output voltage.
(4) the present invention increases radio communication function, and service data teletransmission is carried out data monitoring and utilization to background computer.
(5) the present invention have little, the instant effect of investment, voltage stabilizing obviously, little, lightweight, easy for installation, the automaticity high of security of operation, volume, there is obvious application value.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of existing low-voltage circuit regulator.
Fig. 2 is circuit theory diagrams of the present invention.
Fig. 3 is ground network modified node method schematic diagram of the present invention.
Fig. 4 is operation curve figure of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment
As in Figure 2-4, modified model low-voltage circuit regulator, comprise the compensation transformer of the adjustable magnetic be connected in low-voltage distributing line, the secondary coil two ends of the compensation transformer of this adjustable magnetic are connected in the live wire of low-voltage distributing line, load current mutual-inductor TA is in series with at the input of the compensation transformer of adjustable magnetic, this load current mutual-inductor is for gathering load current, the output of load current mutual-inductor TA is connected with pressure regulation automatic controller K, the input of this pressure regulation automatic controller K is also connected respectively to input and the output of low-voltage distributing line, output exports pressure regulation instruction Uk, for regulating the gear of the primary coil of the compensation transformer of adjustable magnetic, the compensation transformer work of dynamic adjustments adjustable magnetic also exports the voltage U o=Ui+ Δ U after compensating, regulator is made to work in pressure regulation pattern, also comprise that one end is connected on the secondary coil inlet wire of the compensation transformer of adjustable magnetic, the other end is connected to and controls closed/A.C. contactor KM1 of disconnecting in secondary coil outlet and by pressure regulation automatic controller, for the conversion of regulator mode of operation (bypass operation/pressure regulation operation).
In the present embodiment, the compensation transformer core of described adjustable magnetic adopts silicon steel sheet, and winding adopts some gummed paper to solidify as insulating material, guarantees mechanical strength and the overall performance of winding.
In the present embodiment, the output of the compensation transformer of adjustable magnetic is also connected with automatic switching capacitor C.Described automatic switching capacitor comprises three compensation branch roads parallel with one another, and every bar compensates branch road and includes the controlled rectifier group and electric capacity that are cascaded, and controlled rectifier group is made up of parallel with one another two reverse controlled rectifier and operating passing zero switch.Low-voltage distributing line reactive power is compensated, finally with the device improving rate of qualified voltage He reduce the wastage by supporting automatic switching capacitor C.Intelligent capacitor realizes circuit reactive power compensation on the spot, reduces the idle conveying of circuit, realizes idle in-situ balancing, improves line voltage distribution quality.Intelligent capacitor is the intelligent electric power capacitor integrating control, protection, display, operating passing zero switch and power capacitor.
In the present embodiment, the secondary coil outlet of the compensation transformer of adjustable magnetic is also connected with the A.C. contactor KM2 being controlled closed/disconnection by pressure regulation automatic controller, in parallel with A.C. contactor KM1 in the secondary coil outlet that this A.C. contactor KM2 is series at the compensation transformer of adjustable magnetic, this A.C. contactor KM1, KM2 are all located at automatic switching capacitor input.During operation, it is closed when A.C. contactor KM1, KM2 are different, the bypass increasing regulator runs (KM1 closes), regulator is excised rapidly from circuit, automatically switch to by-path running status, guarantee not cause damage to equipment itself and parts, reduce line loss, extend the useful life of regulator.
In the present embodiment, pressure regulation automatic controller is also connected with wireless communication module and local storage.Service data teletransmission is carried out data monitoring and utilization to background computer, and realizes real time record function.
For avoiding broken by lightning regulator, in the lightning protection grounding network of regulator, be provided with 5 ground studs.
Improvement of the present invention is as follows:
(1) regulator operation principle contrast
The operation principle basis of former low-voltage circuit regulator is improved.
As shown in Figure 1, the low-voltage circuit regulator before improvement, belongs to a simple regulator of structure, by certain automatic control function, realizes the operational effect of equipment.When controller K monitor line voltage distribution Ui on the low side time, automatically send corresponding pressure regulation instruction, bucking voltage Δ U, realize terminal temperature difference voltage promote.
As shown in Figure 2, the low-voltage circuit regulator after improvement, by adjustable magnetic compensation transformer compensated line voltage.When pressure regulation automatic controller K monitor line voltage distribution Ui on the low side time, automatically sending corresponding pressure regulation instruction Uk, to produce suitable bucking voltage Δ U, is Uo=Ui+ Δ U by regulator output voltage dynamic adjustments, terminal temperature difference voltage is promoted, meets normal electricity consumption requirement.
In figure, A.C. contactor KM1 is a switching device, for the conversion of the compensation transformer mode of operation of adjustable magnetic (bypass operation/pressure regulation operation).In figure, current transformer TA is for detecting the running current of regulator, realizes electric current instruction and defencive function.
The course of work is as follows:
1. when pressure regulation automatic controller K monitor input voltage Ui normal time (>=198V, the highlyest be set to 220V), send bypass operating instruction, the normally closed point of contactor KM1 closes, normal battle disconnects, regulator works in bypass mode of operation, to reduce line loss, to extend voltage regulator useful life.
2. (the < 198V when pressure regulation automatic controller K detects that input voltage Ui is on the low side, the highlyest be set to 220V), send pressure regulation operating instruction, contactor KM2 is often made war closed, normally closed disconnection, the normally closed disconnection of contactor KM12, normal battle closes, regulator works in automatic Regulation operational mode, with lifting end utilization voltage.
3. the primary coil of the compensation transformer T of adjustable magnetic has 3 gears, and controller according to the change of the fluctuation of system voltage and customer charge, can be dynamically adapted to suitable gear, make output voltage Uo meet the need for electricity of terminal temperature difference all the time.
4. when regulator exception or running current overload, pressure regulation automatic controller K sends bypass operating instruction automatically, and the compensation transformer T of adjustable magnetic is deactivated, to guarantee security of operation and the power supply continuously of regulator.
(2) anti-overload improves
1. reset gear number and the step pitch of voltage-regulation
According to statistics, the average Maximum Drawdown of 220V line end voltage is close to 30%, and the 220V voltage drop range that GB allows is 10%.Thus, the reasonable range of regulation of low-voltage circuit regulator is defined as 20% by group, for reducing the frequent movement of regulator, equipment first time voltage-regulation step pitch is set as 10%.
For ensureing the smoothness of voltage in adjustment process, pressure regulation step pitch should be advisable between 5% ~ 10%; For ensureing the range of regulation of 20%, the voltage-regulation gear number of low-voltage circuit regulator be set to 3 grades comparatively reasonable.
In sum, be finally defined as:
The gear number of table 1 voltage-regulation and step pitch
| Gear and step pitch | Before improvement | After improvement |
| Pressure regulation gear number | 2 | 3 |
| Each shelves pressure regulation step pitch | 5％、10％ | 10％、15％、20％ |
After improvement, 3 gear pressure regulation amplitudes: 22V, 33V, 44V.
(1) pressure regulation automatic controller K detects regulator input and output end voltage simultaneously.
According to input terminal voltage, pressure regulation automatic controller K arranges the voltage power supply upper limit, and input terminal voltage is higher than the upper limit, and regulator bypass runs, and does not have voltage regulation result; Input terminal voltage starts pressure regulation lower than regulator that voltage power supply is prescribed a time limit, and transfers bypass in limited time to and run on exceeding.
(2) regulator at which gear works, and is determined by the output voltage voltage stabilizing upper limit and voltage voltage stabilizing lower limit.
During the K pressure regulation of pressure regulation automatic controller, shift gears from low-grade location to high tap position time delay.Inside arranges boosting time delay, and step-down time delay and the time delay of gear interval, shift gears during boosting from low grade to high tap position, during step-down, shifts gears from high tap position to low-grade location.
2. the bypass increasing regulator runs
(1) for guaranteeing stability and the fail safe of power supply, when voltage exceedes in limited time, regulator should be excised rapidly from circuit, automatically switching to by-path running status, guaranteeing not cause damage to equipment itself and parts.
(2) for reducing line loss, extending the useful life of regulator, when line voltage distribution is qualified, should by-path running status be automatically switched to.
3. improve pressure regulation automatic controller K function, increase radio communication function
For enabling low-voltage distribution network safety, stable operation, should configure overload protection and the short-circuit protection of regulator body, action is in by-path running status.
(1) there is service data automatic recording function and radio communication function, service data teletransmission is carried out data monitoring and utilization to background computer.
(2) there is running current monitor, analyze, compare and during overload, send protection instruction, make external circuit automatically run on bypass condition, avoid equipment fault, ensure stable power-supplying.
(3) earth electrode improves
For avoiding broken by lightning regulator, by the ground connection of original device earth electrode very 1 pile increase to 5, lay according to the earthing device of 10kV distribution transformer, meet resistance value within 10 Europe.
According to above-described embodiment, just the present invention can be realized well.What deserves to be explained is; under prerequisite based on said structure design, for solving same technical problem, even if some making on the invention are without substantial change or polishing; the essence of the technical scheme adopted is still the same with the present invention, therefore it also should in protection scope of the present invention.
Claims (5)
1. modified model low-voltage circuit regulator, it is characterized in that, comprise secondary coil and be connected on the compensation transformer of adjustable magnetic in low-voltage distributing line, the primary coil of the compensation transformer of this adjustable magnetic arranges multiple gear, the load current mutual-inductor for gathering load current signal is in series with at the input of the compensation transformer of adjustable magnetic, the output of load current mutual-inductor connects pressure regulation automatic controller, the input of this pressure regulation automatic controller is also connected respectively to input and the output of low-voltage distributing line, Gather and input voltage and output voltage also export pressure regulation instruction Uk, the voltage after compensating also is exported for the compensation transformer work of dynamic adjustments adjustable magnetic, regulator is made to work in pressure regulation pattern,
Also comprise that one end is connected on the secondary coil inlet wire of the compensation transformer of adjustable magnetic, the other end is connected to and controls closed/A.C. contactor KM1 of disconnecting in secondary coil outlet and by pressure regulation automatic controller, for the conversion of regulator mode of operation.
2. modified model low-voltage circuit regulator according to claim 1, is characterized in that, the compensation transformer core of described adjustable magnetic adopts silicon steel sheet, and winding adopts some gummed paper to solidify as insulating material.
3. modified model low-voltage circuit regulator according to claim 2, it is characterized in that, the secondary coil outlet of the compensation transformer of described adjustable magnetic is also connected with and is controlled closed/A.C. contactor KM2 of disconnecting by pressure regulation automatic controller, in parallel with A.C. contactor KM1 in the secondary coil outlet that this A.C. contactor KM2 is series at the compensation transformer of adjustable magnetic.
4. modified model low-voltage circuit regulator according to claim 1, is characterized in that, described pressure regulation automatic controller is also connected with wireless communication module and local storage.
5. the modified model low-voltage circuit regulator according to claim 1-4 any one, is characterized in that, be provided with many ground studs in the lightning protection grounding network of regulator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510819780.7A CN105470973A (en) | 2015-11-23 | 2015-11-23 | Improved low-voltage line voltage regulating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510819780.7A CN105470973A (en) | 2015-11-23 | 2015-11-23 | Improved low-voltage line voltage regulating device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356733A (en) * | 2016-10-18 | 2017-01-25 | 国网山东省电力公司烟台供电公司 | Single-phase voltage boosting box used by residential users |
| CN108616131A (en) * | 2018-03-19 | 2018-10-02 | 中国电力科学研究院有限公司 | A kind of device and method for carrying out power back-off for electrical integrated mutual inductor |
| CN108767868A (en) * | 2018-06-14 | 2018-11-06 | 重庆明斯克电力建设工程有限责任公司 | Low-voltage circuit on-load voltage regulation compensation device |
| CN108803768A (en) * | 2018-06-14 | 2018-11-13 | 重庆明斯克电力建设工程有限责任公司 | Low-voltage circuit terminal voltage energy-saving equipment and its application method |
| CN109659949A (en) * | 2017-10-12 | 2019-04-19 | 山东民生电气设备有限公司 | A kind of comprehensive lifting device of low-voltage circuit voltage power-less |
| CN110571819A (en) * | 2019-09-12 | 2019-12-13 | 宁波市电力设计院有限公司 | novel distribution network voltage regulator device |
| CN112103954A (en) * | 2020-09-11 | 2020-12-18 | 西安交通大学 | Non-impact switching system, device and method for voltage compensation converter of hybrid distribution transformer |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356733A (en) * | 2016-10-18 | 2017-01-25 | 国网山东省电力公司烟台供电公司 | Single-phase voltage boosting box used by residential users |
| CN109659949A (en) * | 2017-10-12 | 2019-04-19 | 山东民生电气设备有限公司 | A kind of comprehensive lifting device of low-voltage circuit voltage power-less |
| CN108616131A (en) * | 2018-03-19 | 2018-10-02 | 中国电力科学研究院有限公司 | A kind of device and method for carrying out power back-off for electrical integrated mutual inductor |
| CN108767868A (en) * | 2018-06-14 | 2018-11-06 | 重庆明斯克电力建设工程有限责任公司 | Low-voltage circuit on-load voltage regulation compensation device |
| CN108803768A (en) * | 2018-06-14 | 2018-11-13 | 重庆明斯克电力建设工程有限责任公司 | Low-voltage circuit terminal voltage energy-saving equipment and its application method |
| CN110571819A (en) * | 2019-09-12 | 2019-12-13 | 宁波市电力设计院有限公司 | novel distribution network voltage regulator device |
| CN112103954A (en) * | 2020-09-11 | 2020-12-18 | 西安交通大学 | Non-impact switching system, device and method for voltage compensation converter of hybrid distribution transformer |
| CN112103954B (en) * | 2020-09-11 | 2022-07-12 | 西安交通大学 | Non-impact switching system, device and method for voltage compensation converter of hybrid distribution transformer |
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