CN107394788A - A kind of voltage compensating device based on segmented series capacitor - Google Patents
A kind of voltage compensating device based on segmented series capacitor Download PDFInfo
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- CN107394788A CN107394788A CN201710797882.2A CN201710797882A CN107394788A CN 107394788 A CN107394788 A CN 107394788A CN 201710797882 A CN201710797882 A CN 201710797882A CN 107394788 A CN107394788 A CN 107394788A
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- electric brake
- capacitor
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- out terminal
- inlet wire
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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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The present invention relates to a kind of voltage compensating device based on segmented series capacitor, including capacitor C1 and C2, electric discharge damper RL, high-speed eddy switch K0 and K1, nonlinear resistance FR and isolation switch.Capacitor C1, its inlet wire termination electric discharge damper RL leading-out terminal, its outlet terminating capacitor C2 end of incoming cables.Capacitor C2 outlet termination isolation electric brake G2 end of incoming cables.Electric discharge damper RL inlet wire termination isolation electric brake G1 leading-out terminal.High-speed eddy switchs K0, its inlet wire termination isolation electric brake G1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables.High-speed eddy switchs K1, its inlet wire terminating capacitor C1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables.Nonlinear resistance FR, its inlet wire termination isolation electric brake G1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables.The present invention can improve the quality of voltage of circuit, improve the stability of system and the comprehensive utilization ratio of electric energy.
Description
Technical field
The present invention relates to technical field of power systems, and in particular to a kind of voltage compensation based on segmented series capacitor
Device.
Background technology
With expanding economy, the sharp increase of electric load, the increase of net capacity, the short circuit current constantly increased is to electricity
The impact of Force system electrical equipment is increasing；Meanwhile the connecting-disconnecting function of existing breaker be difficult to satisfaction cut-off it is huge short
Road electric current.Therefore to solve this great difficult problem, the mode that current-limiting reactor is concatenated in loop is widely used in power system
In electrical power trans mission/distribution system.Though current-limiting reactor series connection in the loop can limiting short-circuit current intensity, reduce short circuit current to power train
The impact of electrical equipment in system, and busbar voltage is maintained, avoid the further expansion of short trouble.But current-limiting reactor of connecting
But have many weak points, first, produced in current-limiting reactor series loop huge reactive loss also caused to user it is very big
Financial burden；Secondly, when choosing the reactance value of current-limiting reactor, often there is the requirement for meeting limiting short-circuit current
Afterwards, under rated current user terminal brownout contradiction.During the long distance delivery of power system transmission and distribution network, transmission line of electricity
Also induction reactance can be produced, has substantially equally formd the reactor in a kind of stealthy, potential concatenation user load loop, equally
The reduction of user terminal voltage is caused, while has larger reactive loss again.
The content of the invention
It is an object of the invention to provide a kind of voltage compensating device based on segmented series capacitor, the device can
The size of load is conveyed according to circuit, the capacitor of different capabilities is put into circuit, improves the quality of voltage of circuit, increases power transmission
Distance, increase conveying capacity, improve the reliability and safety of power supply.
To achieve the above object, present invention employs following technical scheme：
A kind of voltage compensating device based on segmented series capacitor, including capacitor C1 and C2, electric discharge damper RL, high speed
Vortex switch K0 and K1, nonlinear resistance FR and isolation switch G1, G2, G3.The capacitor C1, the termination electric discharge resistance of its inlet wire
Buddhist nun's device RL leading-out terminal, its outlet terminating capacitor C2 end of incoming cables.The outlet termination isolation electric brake G2's of the capacitor C2
End of incoming cables.The inlet wire termination isolation electric brake G1 of electric discharge damper RL leading-out terminal.The high-speed eddy switchs K0, its inlet wire
Termination isolation electric brake G1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables.The high-speed eddy switchs K1, its inlet wire
Terminating capacitor C1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables.The nonlinear resistance FR, its inlet wire termination
Isolate electric brake G1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables.The inlet wire termination of the isolation electric brake G1 is with low
The end of incoming cables AL1 of cabinet.The leading-out terminal AL2 of the outlet termination power distribution cabinet of the isolation electric brake G2.The isolation electric brake G3, its inlet wire
Termination isolation electric brake G1 end of incoming cables, its outlet termination isolation electric brake G2 leading-out terminal.
Further, the electric discharge damper RL includes the inductance L and resistance R being connected in parallel.
Further, the vacuum extinction breaker that described high-speed eddy switch K0, K1 is driven using vortex, and high-speed eddy
Switch K0, K1 control its on/off switch by the controller in power distribution cabinet.
Further, the capacitor C1 and C2, electric discharge damper RL and high-speed eddy switch K0, K1 are installed in and matched somebody with somebody
In electric cabinet.
From above technical scheme, the present invention has the characteristics that simple in construction, safe and reliable, can be conveyed according to circuit
The size of load, the series capacitor of different capabilities is put into circuit, to improve the quality of voltage of circuit, increase power transmission away from
From increase conveying capacity, so as to improve the comprehensive utilization ratio of the stability of system and electric energy.
Brief description of the drawings
Fig. 1 is the electrical schematic diagram of the present invention.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
A kind of voltage compensating device based on segmented series capacitor as shown in Figure 1, including capacitor C1 and C2, electric discharge hinder
Buddhist nun's device RL, high-speed eddy switch K0 and K1, nonlinear resistance FR and isolation switch G1, G2, G3.The capacitor C1, it enters
Line end connects electric discharge damper RL leading-out terminal, its outlet terminating capacitor C2 end of incoming cables.The outlet termination of the capacitor C2
Isolate electric brake G2 end of incoming cables.The inlet wire termination isolation electric brake G1 of electric discharge damper RL leading-out terminal.The high-speed eddy
Switch K0, its inlet wire termination isolation electric brake G1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables.The high-speed eddy
Switch K1, its inlet wire terminating capacitor C1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables.The nonlinear resistance
FR, its inlet wire termination isolation electric brake G1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables.The isolation electric brake G1's
End of incoming cables AL1 of the inlet wire termination with lowboy.The leading-out terminal AL2 of the outlet termination power distribution cabinet of the isolation electric brake G2.The isolation
Electric brake G3, its inlet wire termination isolation electric brake G1 end of incoming cables, its outlet termination isolation electric brake G2 leading-out terminal.The capacitor C1
With C2 capacitor banks in series.The capacitor bank is followed in series to form by series capacitor C1, C2, is conveyed according to circuit negative
The size of lotus, the series capacitor of circuit different capabilities can be put into.The electric discharge damper RL, for limiting capacitance device group short circuit
The intensity of the dash current discharged afterwards.The high-speed eddy switchs K0, for quick protective condenser group.The high-speed eddy is opened
K1 is closed, for controlling series capacitor C2 throwing to move back.The nonlinear resistance FR, for short-circuit protection capacitor bank, prevents electricity
Container group is damaged because of overvoltage.Described isolation switch G1, G2, G3, for service without power-off or the component of more changing device.
Further, the electric discharge damper RL includes the inductance L and resistance R being connected in parallel.Electric discharge damper RL is used
In the discharge impact electric current of limiting capacitance device group, prevent capacitor bank from being damaged due to excessively stream, enable capacitor bank both end voltage
A relatively low level is enough limited in, the capacity of such capacitor bank can greatly reduce, and its cost can be greatly reduced naturally,
The volume of equipment has obtained effective control simultaneously, the electricity of solution power system long range heavy load transmission of electricity that can be fully effective
Press quality problems.
Further, the vacuum extinction breaker that described high-speed eddy switch K0, K1 is driven using vortex, and high-speed eddy
Switch K0, K1 control its on/off switch by the controller in power distribution cabinet.
Further, the capacitor C1 and C2, electric discharge damper RL and high-speed eddy switch K0, K1 are installed in and matched somebody with somebody
In electric cabinet.
The present invention operation principle be：
During circuit normal operation, the voltage swing of load and terminal voltage is conveyed according to circuit, passes through the controller in power distribution cabinet
The throwing of control high-speed eddy switch K0, K1 various combination is moved back, and can be put into the series capacitor of circuit different capabilities, be realized circuit
Series compensation adjustability, improve the quality of voltage of circuit, increase power transmission distance and increase conveying capacity, improve the stabilization of system
Property, so as to improve the comprehensive utilization ratio of electric energy.
When short trouble occurs, the controller in power distribution cabinet sends reclosing command to high-speed eddy switch K0 immediately, high
Speed vortex switch K0, by capacitor bank short circuit, prevents capacitor bank from being damaged due to overvoltage in 2ms；When capacitor bank is protected
Afterwards, the damper RL that discharges is used to limit the intensity to capacitor discharge current, prevents capacitor bank from being damaged due to excessively stream.When short
After the failure removal of road, when line current returns to normal value, controller sends separating brake to high-speed eddy switch K0 immediately and referred in system
Order, high-speed eddy switch K0 separating brakes immediately, make capacitor bank input circuit operation.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made, it all should fall into the protection domain of claims of the present invention determination.
Claims (4)
- A kind of 1. voltage compensating device based on segmented series capacitor, it is characterised in that：Including capacitor C1 and C2, electric discharge Damper RL, high-speed eddy switch K0 and K1, nonlinear resistance FR and isolation switch G1, G2, G3；The capacitor C1, its Inlet wire termination electric discharge damper RL leading-out terminal, its outlet terminating capacitor C2 end of incoming cables；The leading-out terminal of the capacitor C2 Connect isolation electric brake G2 end of incoming cables；The inlet wire termination isolation electric brake G1 of electric discharge damper RL leading-out terminal；The high speed whirlpool Stream switch K0, its inlet wire termination isolation electric brake G1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables；The high speed whirlpool Stream switch K1, its inlet wire terminating capacitor C1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables；The non-linear electricity Hinder FR, its inlet wire termination isolation electric brake G1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables；The isolation electric brake G1 Inlet wire termination with lowboy end of incoming cables AL1；The leading-out terminal AL2 of the outlet termination power distribution cabinet of the isolation electric brake G2；It is described every From electric brake G3, its inlet wire termination isolation electric brake G1 end of incoming cables, its outlet termination isolation electric brake G2 leading-out terminal.
- A kind of 2. voltage compensating device based on segmented series capacitor according to claim 1, it is characterised in that：Institute State inductance L and resistance R that electric discharge damper RL includes being connected in parallel.
- A kind of 3. voltage compensating device based on segmented series capacitor according to claim 1, it is characterised in that：Institute Vacuum extinction breakers of high-speed eddy switch K0, the K1 using vortex driving is stated, and high-speed eddy switch K0, K1 pass through installation Controller in power distribution cabinet controls its on/off switch.
- A kind of 4. voltage compensating device based on segmented series capacitor according to claim 1, it is characterised in that：Institute State capacitor C1 and C2, electric discharge damper RL and high-speed eddy switch K0, K1 are installed in power distribution cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710797882.2A CN107394788A (en) | 2017-09-06 | 2017-09-06 | A kind of voltage compensating device based on segmented series capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710797882.2A CN107394788A (en) | 2017-09-06 | 2017-09-06 | A kind of voltage compensating device based on segmented series capacitor |
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| Publication Number | Publication Date |
|---|---|
| CN107394788A true CN107394788A (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710797882.2A Pending CN107394788A (en) | 2017-09-06 | 2017-09-06 | A kind of voltage compensating device based on segmented series capacitor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958501A (en) * | 2016-06-24 | 2016-09-21 | 安徽徽电科技股份有限公司 | Adjustable series-wound compensation apparatus for high-voltage power grid |
| CN106849102A (en) * | 2017-03-02 | 2017-06-13 | 安徽伊格瑞德电气设备有限公司 | A kind of mesohigh series compensation and depth current limiting system |
| CN106899023A (en) * | 2017-03-10 | 2017-06-27 | 安徽尚途电力保护设备有限公司 | A kind of adjustable serial compensation system |
| CN106972502A (en) * | 2017-04-25 | 2017-07-21 | 安徽伊格瑞德电气设备有限公司 | A kind of series capacitor segmented compensation device |
| CN207200285U (en) * | 2017-09-06 | 2018-04-06 | 安徽徽电科技股份有限公司 | A kind of voltage compensating device based on segmented series capacitor |
-
2017
- 2017-09-06 CN CN201710797882.2A patent/CN107394788A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958501A (en) * | 2016-06-24 | 2016-09-21 | 安徽徽电科技股份有限公司 | Adjustable series-wound compensation apparatus for high-voltage power grid |
| CN106849102A (en) * | 2017-03-02 | 2017-06-13 | 安徽伊格瑞德电气设备有限公司 | A kind of mesohigh series compensation and depth current limiting system |
| CN106899023A (en) * | 2017-03-10 | 2017-06-27 | 安徽尚途电力保护设备有限公司 | A kind of adjustable serial compensation system |
| CN106972502A (en) * | 2017-04-25 | 2017-07-21 | 安徽伊格瑞德电气设备有限公司 | A kind of series capacitor segmented compensation device |
| CN207200285U (en) * | 2017-09-06 | 2018-04-06 | 安徽徽电科技股份有限公司 | A kind of voltage compensating device based on segmented series capacitor |
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