CN103515968A - Energy-saving type intelligent compensation metering comprehensive protection voltage stabilization box - Google Patents
Energy-saving type intelligent compensation metering comprehensive protection voltage stabilization box Download PDFInfo
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- CN103515968A CN103515968A CN201310456124.6A CN201310456124A CN103515968A CN 103515968 A CN103515968 A CN 103515968A CN 201310456124 A CN201310456124 A CN 201310456124A CN 103515968 A CN103515968 A CN 103515968A
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- energy
- reacance generator
- static reacance
- intelligent compensation
- integrated protection
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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
Abstract
The invention relates to the technical field of electric power matched products, in particular to an energy-saving type intelligent compensation metering comprehensive protection voltage stabilization box which comprises a box body. A static var generator, a connecting electric reactor, an isolation switch, a current transformer and an outgoing-line breaker are arranged in the box body. The static var generator is connected with a secondary side of the power grid current transformer through the connecting electric reactor. The upper end of the isolation switch is directly connected with the secondary side of the power grid current transformer. The lower end of the isolation switch is provided with the isolation switch which is connected with the outgoing-line breaker in an outgoing-line mode. The energy-saving type intelligent compensation metering comprehensive protection voltage stabilization box is arranged on the secondary side of a distribution transformer in a city power grid or a rural power grid, a traditional JP cabinet and distribution transformer comprehensive distribution box is replaced, the energy-saving type intelligent compensation metering comprehensive protection voltage stabilization box has the advantages of being good in compensation effect, quick in response speed, low in power loss and high in reliability, and the requirements for reactive compensation of a modern power grid can be well met. The structure of the box body has the advantages of being modularized, small in size, attractive in appearance, safe and reliable in operation and convenient to maintain.
Description
Technical field
The present invention relates to electric power auxiliary products technical field, be specifically related to a kind of energy-conserving intelligent compensation metering integrated protection pressurizer tank.
Background technology
Along with deepening continuously of upgrade of rural power grids, a large amount of distribution transformer integrated power distribution cabinets or JP cabinet are arranged on the distribution transformer secondary side in city net, rural power grids.Outdoor electricity distribution and compensation equipment that distribution transformer integrated power distribution cabinet mainly consists of isolating switch, circuit breaker, capacitor, switching device, compensating controller etc., adopt multiple scheme of electric power flexibly.Cabinet is divided into independently compartment of four of inlet wires, outlet, electric capacity, metering, user according to scene need to select side enterprising, under the lead-in wire mode such as enter.The operation maintenance of rural power grids, safety management have been played to positive effect.But traditional compensator exists the shortcoming that response speed is slow, compensation effect can not accurately be controlled, easily cause self breaking-up with electrical network generation parallel resonance and switching concussion.
Static reacance generator (English is described as: Static Var Generator) referred to as SVG, claim again dynamic passive compensation generating means, or STATCOM.Refer to the device that is carried out dynamic passive compensation by the electric semiconductor bridge-type current transformer from commutation.SVG is the preferred plan in current Reactive Power Control field, it with respect to traditional capacitor, is traditional compensation way of main representative, SVG is a kind of for the idle novel electric power electric device of dynamic compensation, it can carry out quick and continuous compensation to size variation idle, its application can overcome that traditional reactive-load compensator response speed such as compensator is slow, compensation effect can not accurately be controlled, easily and the shortcoming such as electrical network generation parallel resonance and switching concussion, avoid capacitor switching in the past to occur mending and owe the situation of mending, significantly promote grid stability and fail safe.But, existing static reacance generator SVG due to components and parts volume and integrated level not high, often take larger space, be not suitable for the requirement that adapts to the standardization of countryside low-voltage electric distribution device, miniaturization, outdoor type.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of energy-conserving intelligent compensation metering integrated protection pressurizer tank; overcome traditional compensator and have that response speed is slow, compensation effect can not accurately be controlled, easily cause the shortcoming of self breaking-up with electrical network generation parallel resonance and switching concussion.
Technical problem to be solved by this invention realizes by the following technical solutions:
A kind of energy-conserving intelligent compensation metering integrated protection pressurizer tank; comprise casing; in described casing, be provided with static reacance generator, linked reactor, isolating switch, current transformer, wire-outgoing breaker; described static reacance generator is connected in power network current instrument transformer secondary side by described linked reactor; described isolating switch upper end is directly connected with power network current instrument transformer secondary side, and lower end is furnished with isolating switch outlet and connects wire-outgoing breaker.
Preferably, described linked reactor connects network transformer secondary side by static reacance generator switch.
Described static reacance generator is encapsulated in static reacance generator module.Described static reacance generator module comprises shell, on the power device of described static reacance generator, is separately installed with radiator, installs in the enclosure, on described shell, has louvre, is provided with cooling fan in shell.
Described shell is arranged in described casing by guide barrel construction.
Described shell is aluminum alloy casing.
In described static reacance generator shell, metering units is installed, for the metering of electric weight.
Static reacance generator switch comprises circuit breaker, fuse and controlled power electronic device.
Energy-conserving intelligent compensation metering integrated protection pressurizer tank is arranged on the distribution transformer secondary side in city net, rural power grids.
The present invention adopts static reacance generator SVG to replace original distribution transformer integrated power distribution cabinet no-power compensation function, two-way reactive power compensation, the stabilizing transformer secondary side voltage of carrying out of energy; SVG can send perception idlely also can send capacitive reactive power, and idle when not enough when circuit, SVG provides perceptual reactive power support; When circuit underloading, SVG absorbs capacitive reactive power, effectively reduces voltage; To realize backbone point pressure regulation, make the operation of electrical network be not affected or less affected by the impact because of the voltage fluctuation of power flow changing or other reasons formation, when having an accident, plays a part in electrical network to support voltage, prevent because of line voltage big ups and downs expansion accident.The power of voltage support ability, except outside the Pass having with compensation method and compensation capacity size, more relevant with adjusting control ability and the response speed of compensation arrangement.Though shunt capacitor is in the past conventional and inexpensive compensation equipment, it is idle exerts oneself when voltage drop the square value by voltage is declined, and is unfavorable for supporting voltage.A large amount of installing parallel capacitors have accident that the possibility of line voltage collapse occurs to encourage on the contrary.Adopting STATCOM to add that suitable adjusting controls, is the reactive-load compensation equipment of more satisfactory support voltage.In addition SVG can also compensating three-phase unbalance, reduces the loss producing in distribution transformer and circuit due to the caused electric current of three-phase imbalance.
The invention has the beneficial effects as follows: the static reacance generator of employing is control device by way of compensation to have the advantages that compensation effect is better, the response time fast, power consumption is lower, reliability is higher, adapt to the intelligent requirements of modern power network to reactive power compensation.Casing becomes structure and has advantages of that modularization, volume are little, handsome in appearance, safe and reliable to operation, easy to maintenance.Have economically floor space little, conveniently moving, gos deep into that load center, construction period are short, the advantage such as cut the waste.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the electrical block diagram of the specific embodiment of the invention.
In Fig. 1, SVG-static reacance generator,
QS-isolating switch,
1TAa/1TAb/1TAc-current transformer,
QF1/QF2 – wire-outgoing breaker,
QF3 – SVG switch,
Fig. 2 is the physical connection structural representation of the specific embodiment of the invention.
In Fig. 2,1, static reacance generator switch, 2, linked reactor, 3, static reacance generator, 4, isolating switch, 5, current transformer, 6, wire-outgoing breaker, 7, casing.
Embodiment
For the technological means, the creation characteristic that make to realize, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
This embodiment is to design for adapting to the requirement of the standardization of countryside low-voltage electric distribution device, miniaturization, outdoor type, and it integrates distribution, metering, protection (overload, short circuit, electric leakage), capacitance reactive compensation.
As shown in Figure 1, static reacance generator is connected with static reacance generator switch QF3 by linked reactor, and static reacance generator switch QF3 and isolating switch are connected in the secondary side of power network current instrument transformer, connects terminal use's electrical network.Isolating switch upper end is directly connected with transformer 1TAa/1TAb/1TAc secondary side, and lower end is furnished with 2 tunnel outlets, and QF1/QF2 is wire-outgoing breaker, and static reacance generator SVG is connected with isolating switch QS upper end by reactor, SVG switch QF3.Static reacance generator gathers Circuit Fault on Secondary Transformer electric current and voltage, adopt Instantaneous Power Theory to calculate the instantaneous values such as idle, meritorious, electric current, voltage of electrical network, system is carried out to perceptual capacitive reactive power bidirectional compensating, 3 response times of static reacance generator are less than 20ms, bucking-out system is because the voltage fluctuation that idle variation causes is played stabilization to the voltage of system effectively.
As shown in Figure 2; the energy-conserving intelligent compensation metering integrated protection pressurizer tank of this embodiment; in casing 7, be provided with static reacance generator module 3, linked reactor 2, static reacance generator switch 1, isolating switch 4, current transformer 5, wire-outgoing breaker 6; encapsulation static reacance generator in static reacance generator 3 modules, static reacance generator switch 1 comprises circuit breaker, fuse and controlled power electronic device.The capacity of static reacance generator is ± 100kvar that the response time of static reacance generator is less than 20ms.Static reacance generator module 3 is arranged in the aluminum alloy casing of static reacance generator module, on the power device of static reacance generator, is separately installed with radiator, has louvre on aluminum alloy casing, is provided with cooling fan in shell.Shell is arranged in casing 7 by guide barrel construction.In static reacance generator shell, metering units is installed, for the metering of electric weight.
The present invention adopts static reacance generator to replace original distribution transformer integrated power distribution cabinet no-power compensation function, two-way reactive power compensation, the stabilizing transformer secondary side voltage of carrying out of energy; Static reacance generator can send perception idlely also can send capacitive reactive power, when circuit idle when not enough static reacance generator perceptual reactive power support is provided; When circuit underloading, static reacance generator absorbs capacitive reactive power, effectively reduces voltage; To realize backbone point pressure regulation, make the operation of electrical network be not affected or less affected by the impact because of the voltage fluctuation of power flow changing or other reasons formation, when having an accident, plays a part in electrical network to support voltage, prevent because of line voltage big ups and downs expansion accident.The power of voltage support ability, except outside the Pass having with compensation method and compensation capacity size, more relevant with adjusting control ability and the response speed of compensation arrangement.Though shunt capacitor is in the past conventional and inexpensive compensation equipment, it is idle exerts oneself when voltage drop the square value by voltage is declined, and is unfavorable for supporting voltage.A large amount of installing parallel capacitors have accident that the possibility of line voltage collapse occurs to encourage on the contrary.Adopting STATCOM to add that suitable adjusting controls, is the reactive-load compensation equipment of more satisfactory support voltage.In addition static reacance generator can also compensating three-phase unbalance, reduces the loss producing in distribution transformer and circuit due to the caused electric current of three-phase imbalance.
Secondly, by original JP cabinet function modoularization, be convenient to safeguard and replace; Because static reacance generator is modularized encapsulation, by set Integral mold blockings such as capacitor in the past, switching, controls, be convenient to install and change, and there is automatic failure alarm function, avoided in the past due to the long-term noncompensable hidden danger of capacitive part fault.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (8)
1. integrated protection pressurizer tank is measured in an energy-conserving intelligent compensation; comprise casing; it is characterized in that: in described casing, be provided with static reacance generator, linked reactor, isolating switch, current transformer, wire-outgoing breaker; described static reacance generator is connected in power network current instrument transformer secondary side by described linked reactor; described isolating switch upper end is directly connected with power network current instrument transformer secondary side, and lower end is furnished with isolating switch outlet and connects wire-outgoing breaker.
2. energy-conserving intelligent compensation metering integrated protection pressurizer tank according to claim 1, is characterized in that: described linked reactor connects network transformer secondary side by static reacance generator switch.
3. energy-conserving intelligent compensation metering integrated protection pressurizer tank according to claim 2, is characterized in that: described static reacance generator is encapsulated in static reacance generator module; Described static reacance generator module comprises shell, on the power device of described static reacance generator, is separately installed with radiator, on described shell, has louvre, is provided with cooling fan in shell.
4. energy-conserving intelligent compensation metering integrated protection pressurizer tank according to claim 3, is characterized in that: described shell is arranged in described casing by guide barrel construction.
5. energy-conserving intelligent compensation metering integrated protection pressurizer tank according to claim 4, is characterized in that: described shell is aluminum alloy casing.
6. according to the energy-conserving intelligent compensation metering integrated protection pressurizer tank one of claim 3 to 5 Suo Shu, it is characterized in that: in static reacance generator module, metering units is housed.
7. energy-conserving intelligent compensation metering integrated protection pressurizer tank according to claim 6, is characterized in that: static reacance generator switch comprises circuit breaker, fuse and controlled power electronic device.
8. energy-conserving intelligent compensation metering integrated protection pressurizer tank according to claim 7, is characterized in that: energy-conserving intelligent compensation metering integrated protection pressurizer tank is arranged on the distribution transformer secondary side in city net, rural power grids.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310456124.6A CN103515968A (en) | 2013-09-29 | 2013-09-29 | Energy-saving type intelligent compensation metering comprehensive protection voltage stabilization box |
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|---|---|---|---|
| CN201310456124.6A CN103515968A (en) | 2013-09-29 | 2013-09-29 | Energy-saving type intelligent compensation metering comprehensive protection voltage stabilization box |
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| CN103515968A true CN103515968A (en) | 2014-01-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113451891A (en) * | 2021-07-06 | 2021-09-28 | 德威特智能电气(深圳)有限公司 | Intelligent distribution box and control method and system thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040071000A1 (en) * | 2001-02-01 | 2004-04-15 | Gerardo Escobar | Adaptive controller for d-statcom in the stationary reference frame to compensate for reactive and harmonic distortion under unbalanced conditions |
| CN101588069A (en) * | 2009-06-26 | 2009-11-25 | 西安赛博电气有限责任公司 | Harmonic wave and Reactive-current General Compensation system based on two-way dynamic reactive compensation device |
| CN202276072U (en) * | 2011-09-28 | 2012-06-13 | 山西润世华电力科技有限公司 | Low voltage intelligent reactive compensation integrated distribution box |
-
2013
- 2013-09-29 CN CN201310456124.6A patent/CN103515968A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040071000A1 (en) * | 2001-02-01 | 2004-04-15 | Gerardo Escobar | Adaptive controller for d-statcom in the stationary reference frame to compensate for reactive and harmonic distortion under unbalanced conditions |
| CN101588069A (en) * | 2009-06-26 | 2009-11-25 | 西安赛博电气有限责任公司 | Harmonic wave and Reactive-current General Compensation system based on two-way dynamic reactive compensation device |
| CN202276072U (en) * | 2011-09-28 | 2012-06-13 | 山西润世华电力科技有限公司 | Low voltage intelligent reactive compensation integrated distribution box |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113451891A (en) * | 2021-07-06 | 2021-09-28 | 德威特智能电气(深圳)有限公司 | Intelligent distribution box and control method and system thereof |
| CN113451891B (en) * | 2021-07-06 | 2022-03-08 | 德威特智能电气(深圳)有限公司 | Intelligent distribution box and control method and system thereof |
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Application publication date: 20140115 |