CN203632250U - Energy-saving intelligent compensation metering comprehensive protection voltage-stabilizing box - Google Patents
Energy-saving intelligent compensation metering comprehensive protection voltage-stabilizing box Download PDFInfo
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- CN203632250U CN203632250U CN201320584431.8U CN201320584431U CN203632250U CN 203632250 U CN203632250 U CN 203632250U CN 201320584431 U CN201320584431 U CN 201320584431U CN 203632250 U CN203632250 U CN 203632250U
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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
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- 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
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Abstract
The utility model relates to the technical field of power complementary products, specifically an energy-saving intelligent compensation metering comprehensive protection voltage-stabilizing box. The energy-saving intelligent compensation metering comprehensive protection voltage-stabilizing box includes a voltage-stabilizing box body; a static var generator is arranged inside the box body; the static var generator is connected in parallel with a power grid through an electric reactor; and the static var generator is encapsulated in a static var generator module. The energy-saving intelligent compensation metering comprehensive protection voltage-stabilizing box of the utility model is mounted at the secondary side of a distribution transformer of an urban power grid or a rural power grid, and can replace a traditional JP cabinet and a distribution transformer comprehensive distribution box. The energy-saving intelligent compensation metering comprehensive protection voltage-stabilizing box has the advantages of better compensation effect, fast response time, lower power consumption and higher reliability, and can better satisfy requirements of modern power grids for reactive compensation. The structure of the box body is changed, and therefore, the voltage-stabilizing box further has the advantages of modularization, small size, beautiful appearance, safe and reliable operation and convenient maintenance.
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 is mainly made up of isolating switch, circuit breaker, capacitor, switching device, compensator 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.Positive effect has been played in operation maintenance to rural power grids, safety management.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, claims 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 is traditional compensation way of main representative with respect to traditional capacitor, 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, comprises pressurizer tank casing, in described casing, is provided with static reacance generator, and described static reacance generator is connected in parallel on electrical network by reactor.
Preferably, also comprise static reacance generator switch at described energy-conserving intelligent compensation metering integrated protection pressurizer tank, described reactor passes through static reacance generator switch in parallel on electrical network.
Described static reacance generator switch comprises circuit breaker, fuse and controlled power electronic device.
Described static reacance generator integrative packaging is in static reacance generator module.Described static reacance generator is encapsulated in energy-conserving intelligent compensation metering integrated protection pressurizer tank with modular integratedization.
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 the idle capacitive reactive power that also can send of perception, and in the time of the idle deficiency of circuit, SVG provides perceptual reactive power support; In the time of 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, in the time that 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 in the time of 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 suitable adjusting control, 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 control device by way of compensation, have the advantages that compensation effect is better, the response time fast, power consumption is lower, reliability is higher, more adapt to the requirement 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 circuit diagram of the present invention.
Fig. 2 is structural representation of the present invention.
In Fig. 1, in figure, SVG-static reacance generator, QS-isolating switch, 1TAa/1TAb/1TAc-current transformer, QF1/QF2 – wire-outgoing breaker, QF3 – SVG switch
In Fig. 2,1, static reacance generator circuit breaker, 2, linked reactor, 3, static reacance generator, 4, isolating switch, 5, current transformer, 6, wire-outgoing breaker, 7, cabinet shell.
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 that the requirement for adapting to the standardization of countryside low-voltage electric distribution device, miniaturization, outdoor type designs, 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 value 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.
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 the idle capacitive reactive power that also can send of perception, and in the time of the idle deficiency of circuit, static reacance generator provides perceptual reactive power support; In the time of 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, in the time that 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 in the time of 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 suitable adjusting control, 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, avoid 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 (4)
1. an energy-conserving intelligent compensation metering integrated protection pressurizer tank, comprises pressurizer tank casing, it is characterized in that: in described casing, be provided with static reacance generator, described static reacance generator is connected in parallel on electrical network by reactor.
2. energy-conserving intelligent compensation metering integrated protection pressurizer tank according to claim 1; it is characterized in that: also comprise static reacance generator switch at described energy-conserving intelligent compensation metering integrated protection pressurizer tank, described reactor passes through static reacance generator switch in parallel on electrical network.
3. energy-conserving intelligent compensation metering integrated protection pressurizer tank according to claim 2, is characterized in that: described static reacance generator switch comprises circuit breaker, fuse and controlled power electronic device.
4. according to the energy-conserving intelligent compensation metering integrated protection pressurizer tank one of claims 1 to 3 Suo Shu, it is characterized in that: described static reacance generator is encapsulated in energy-conserving intelligent compensation metering integrated protection pressurizer tank with modular integratedization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320584431.8U CN203632250U (en) | 2013-09-22 | 2013-09-22 | Energy-saving intelligent compensation metering comprehensive protection voltage-stabilizing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320584431.8U CN203632250U (en) | 2013-09-22 | 2013-09-22 | Energy-saving intelligent compensation metering comprehensive protection voltage-stabilizing box |
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| Publication Number | Publication Date |
|---|---|
| CN203632250U true CN203632250U (en) | 2014-06-04 |
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|---|---|---|---|
| CN201320584431.8U Expired - Fee Related CN203632250U (en) | 2013-09-22 | 2013-09-22 | Energy-saving intelligent compensation metering comprehensive protection voltage-stabilizing box |
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| CN (1) | CN203632250U (en) |
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2013
- 2013-09-22 CN CN201320584431.8U patent/CN203632250U/en not_active Expired - Fee Related
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20160922 |
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| CF01 | Termination of patent right due to non-payment of annual fee |