CN105958501A - Adjustable series-wound compensation apparatus for high-voltage power grid - Google Patents
Adjustable series-wound compensation apparatus for high-voltage power grid Download PDFInfo
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- CN105958501A CN105958501A CN201610467987.7A CN201610467987A CN105958501A CN 105958501 A CN105958501 A CN 105958501A CN 201610467987 A CN201610467987 A CN 201610467987A CN 105958501 A CN105958501 A CN 105958501A
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- catalyst
- parallel
- wound
- electric capacity
- capacitor
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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
- 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
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/16—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for capacitors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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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
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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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
- 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
Abstract
The invention relates to an adjustable series-wound compensation apparatus for a high-voltage power grid. The adjustable series-wound compensation apparatus includes a series-wound capacitor group which consists of a capacitor C1, a capacitor C2 and a capacitor C3, wherein one ends of the capacitor C1, the capacitor C2 and the capacitor C3 are connected in parallel, and the shunt-wound end is taken as the shunt-wound end a; the capacitor C1 is connected with a contactor K1 in series; the capacitor C2 is connected with a contactor K2 in series; the capacitor C3 is connected with a contactor K3 in series; the other ends of the contactor K1, the contact K2 and the contactor K3 are connected in parallel, and the shunt-wound end is taken as the shunt-wound end b; one end of a current-limiting damper RL is connected with the shunt-wound end a while the other end of the current-limiting damper RL is connected with a high-speed eddy current switch K0 in series; the other end of the high-speed eddy current switch K0 is connected with the shunt-wound end b; and a bidirectional silicon controlled rectifier (SCR) is connected with the shunt-wound end a and the shunt-wound end b in a bridging manner. By adoption of the adjustable series-wound compensation apparatus, the series-wound capacitors with different capacities can be input to a circuit according to the magnitude of the transmission load of the circuit so as to improve the voltage quality of the circuit, prolong the power transmission distance and enhance the transmission capability; and consequently, the stability of the system is improved, and the comprehensive utilization rate of the electric energy is increased consequently.
Description
Technical field
The present invention relates to Power Network Compensation Technology field, especially a kind of high-voltage fence adjustable serial compensation device.
Background technology
Along with expanding economy, the sharp increase of power load, the quality of voltage problem that mesohigh long distance transmission line brings gradually comes out.For the area that population density is less, radius of electricity supply is relatively big, and transmission line of electricity is the longest.In the case of load is relatively light in early days, still can be met use demand by terminal voltage；But along with social progress and economic development, heavy users is continuously increased, load current pressure drop on the line substantially strengthens, cause the supply voltage quality severe overweight to load, the line end voltage having during load peak only has the 80% of rated voltage, cause neighbouring industry and residential electricity consumption equipment to be not normally functioning, directly affects production and the life of this area people.
Summary of the invention
It is an object of the invention to provide a kind of size according to circuit conveying load, 25%, 35%, 40%, 60%, 65%, 75%, 100% specified operation series capacitor C capacity in circuit can be put into, it is effectively improved the quality of voltage of circuit, strengthen power transmission distance and increase conveying capacity, improve the stability of system, thus improve the high-voltage fence adjustable serial compensation device of the comprehensive utilization ratio of electric energy.
For achieving the above object, present invention employs techniques below scheme: a kind of high-voltage fence adjustable serial compensation device, including the series capacitor bank being made up of electric capacity C1, electric capacity C2, electric capacity C3, described electric capacity C1, electric capacity C2, one end parallel connection of electric capacity C3, this parallel connected end is parallel connected end a；The other end of electric capacity C1 is connected with catalyst K1, and the other end of electric capacity C2 is connected with catalyst K2, and the other end of electric capacity C3 is connected with catalyst K3, and the other end of catalyst K1, K2, K3 is in parallel, and this parallel connected end is parallel connected end b；One termination parallel connected end a of current limliting antivibrator RL, the other end switchs K0 with high-speed eddy and connects, another termination parallel connected end b of high-speed eddy switch K0；Bidirectional triode thyristor SCR is connected across in parallel connected end a, parallel connected end b；Parallel connected end a is connected with the end of incoming cables AL1 of power distribution cabinet, and parallel connected end b meets the leading-out terminal AL2 of power distribution cabinet by line current transformer CT.
The described outfan of line current transformer CT is connected with the input of the controller in power distribution cabinet, and the outfan of controller is connected with high-speed eddy switch K0, catalyst K1, catalyst K2, the control end of catalyst K3 respectively.
Described current limliting antivibrator RL is in parallel is formed by inductance L and resistance R, and current limliting antivibrator RL constitutes discharge prevention system, and one end of current limliting antivibrator RL is connected with the end of incoming cables of series capacitor bank, and its other end is connected with the end of incoming cables of high-speed eddy switch K0.
One end of described high-speed eddy switch K0 is connected with the leading-out terminal of current limliting antivibrator RL, and its other end is connected with catalyst K1, catalyst K2, the leading-out terminal of catalyst K3.
First electrode of described bidirectional triode thyristor SCR is connected with the end of incoming cables of series capacitor bank, and its second electrode is connected with catalyst K1, catalyst K2, the leading-out terminal of catalyst K3；Described high-speed eddy switch K0 and bidirectional triode thyristor SCR forms intelligent protection control system.
Described high-speed eddy switch K0 is eddy current driving, vacuum extinction chopper.
As shown from the above technical solution, present configuration is simple, safe and reliable, size according to circuit conveying load, the series capacitor of circuit different capabilities can be put into, improve the quality of voltage of circuit, strengthen power transmission distance and increase conveying capacity, improve the stability of system, thus improve the comprehensive utilization ratio of electric energy；Switch K0 by bidirectional triode thyristor SCR and high-speed eddy and realize the duplicate protection to series capacitor bank, prevent series capacitor bank from damaging because of overvoltage；When discharge prevention system stream occurred for circuit, after series capacitor bank is shorted, series capacitor bank release internal reservoir electric energy, it is ensured that series capacitor bank normal safe runs.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the present invention.
Detailed description of the invention
As it is shown in figure 1, a kind of high-voltage fence adjustable serial compensation device, including the series capacitor bank being made up of electric capacity C1, electric capacity C2, electric capacity C3, described electric capacity C1, electric capacity C2, one end parallel connection of electric capacity C3, this parallel connected end is parallel connected end a；The other end of electric capacity C1 is connected with catalyst K1, and the other end of electric capacity C2 is connected with catalyst K2, and the other end of electric capacity C3 is connected with catalyst K3, and the other end of catalyst K1, K2, K3 is in parallel, and this parallel connected end is parallel connected end b；According to the size of circuit conveying load, 25%, 35%, 40%, 60%, 65%, 75%, 100% specified operation series capacitor C capacity in circuit can be put into by controller, it is achieved circuit series compensation adjustability.One termination parallel connected end a of current limliting antivibrator RL, the other end switchs K0 with high-speed eddy and connects, another termination parallel connected end b of high-speed eddy switch K0；Bidirectional triode thyristor SCR is connected across in parallel connected end a, parallel connected end b；Parallel connected end a is connected with the end of incoming cables AL1 of power distribution cabinet, and parallel connected end b meets the leading-out terminal AL2 of power distribution cabinet by line current transformer CT.The described outfan of line current transformer CT is connected with the input of the controller in power distribution cabinet, and the outfan of controller is connected with high-speed eddy switch K0, catalyst K1, catalyst K2, the control end of catalyst K3 respectively.
As shown in Figure 1; described current limliting antivibrator RL is in parallel is formed by inductance L and resistance R; current limliting antivibrator RL constitutes discharge prevention system, and one end of current limliting antivibrator RL is connected with the end of incoming cables of series capacitor bank, and its other end is connected with the end of incoming cables of high-speed eddy switch K0.One end of described high-speed eddy switch K0 is connected with the leading-out terminal of current limliting antivibrator RL, and its other end is connected with catalyst K1, catalyst K2, the leading-out terminal of catalyst K3.First electrode of described bidirectional triode thyristor SCR is connected with the end of incoming cables of series capacitor bank, and its second electrode is connected with catalyst K1, catalyst K2, the leading-out terminal of catalyst K3；Described high-speed eddy switch K0 and bidirectional triode thyristor SCR forms intelligent protection control system.Described high-speed eddy switch K0 is eddy current driving, vacuum extinction chopper.
The electric energy release dash current that current limliting antivibrator RL stores after limiting the protection of series capacitor bank short circuit; prevent series capacitor bank from damaging owing to crossing stream; series capacitor bank both end voltage is enable to be limited in a relatively low level; so capacity of series capacitor bank can reduce greatly; its cost can be greatly reduced naturally; the volume of equipment has obtained effective control simultaneously, it is possible to the fully effective quality of voltage problem solving the transmission of electricity of power system distance heavy load.
Described high-speed eddy switch K0 controls it by the controller being arranged in power distribution cabinet and cut-offs; when in circuit, electric current exceedes setting valve; controller controls high-speed eddy switch K0 immediately and closes a floodgate, thus is effectively protected series capacitor bank, prevents series capacitor bank from damaging because of overvoltage.In order to improve the safety of series capacitor bank further, intelligent protection control system also includes bidirectional triode thyristor SCR.
Operation principle of the present invention is as follows: when circuit is properly functioning, according to the size of circuit conveying load,
Moved back by controller control contactor K1, catalyst K2, the throwing of various combination of catalyst K3, it is achieved put into 25%, 35%, 40%, 60%, 65%, 75%, 100% specified operation series capacitor C capacity in circuit,
Realize circuit series compensation adjustability.When the terminal voltage of series capacitor bank exceedes bidirectional triode thyristor SCR conducting voltage, this bidirectional triode thyristor SCR turns on, thus series capacitor bank short circuit, when electric current is less than the maintenance electric current of controllable silicon SCR, controllable silicon SCR automatically shuts down, and controller controls high-speed eddy switch K0 Guan Bi simultaneously, when controllable silicon SCR disconnects, continue short circuit series capacitor bank, effectively prevent series capacitor bank from damaging due to overvoltage；After series capacitor bank is protected, series capacitor bank is discharged by Intelligent discharge system immediately, the electric energy that release series capacitor bank stores；After short trouble excises, when line current returns normal value, controller sends separating brake order, high-speed eddy switch K0 separating brake, makes series capacitor bank put into circuit and runs.
Embodiment described above is only to be described the preferred embodiment of the present invention; not the scope of the present invention is defined; on the premise of designing spirit without departing from the present invention; various deformation that technical scheme is made by those of ordinary skill in the art and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (6)
1. a high-voltage fence adjustable serial compensation device, it is characterised in that: including the series capacitor bank being made up of electric capacity C1, electric capacity C2, electric capacity C3, described electric capacity C1, electric capacity C2, one end parallel connection of electric capacity C3, this parallel connected end is parallel connected end a；The other end of electric capacity C1 is connected with catalyst K1, and the other end of electric capacity C2 is connected with catalyst K2, and the other end of electric capacity C3 is connected with catalyst K3, and the other end of catalyst K1, K2, K3 is in parallel, and this parallel connected end is parallel connected end b；One termination parallel connected end a of current limliting antivibrator RL, the other end switchs K0 with high-speed eddy and connects, another termination parallel connected end b of high-speed eddy switch K0；Bidirectional triode thyristor SCR is connected across in parallel connected end a, parallel connected end b；Parallel connected end a is connected with the end of incoming cables AL1 of power distribution cabinet, and parallel connected end b meets the leading-out terminal AL2 of power distribution cabinet by line current transformer CT.
High-voltage fence adjustable serial compensation device the most according to claim 1, it is characterized in that: the described outfan of line current transformer CT is connected with the input of the controller in power distribution cabinet, the outfan of controller is connected with high-speed eddy switch K0, catalyst K1, catalyst K2, the control end of catalyst K3 respectively.
High-voltage fence adjustable serial compensation device the most according to claim 1; it is characterized in that: described current limliting antivibrator RL is in parallel is formed by inductance L and resistance R; current limliting antivibrator RL constitutes discharge prevention system; one end of current limliting antivibrator RL is connected with the end of incoming cables of series capacitor bank, and its other end is connected with the end of incoming cables of high-speed eddy switch K0.
High-voltage fence adjustable serial compensation device the most according to claim 1, it is characterized in that: one end of described high-speed eddy switch K0 is connected with the leading-out terminal of current limliting antivibrator RL, and its other end is connected with catalyst K1, catalyst K2, the leading-out terminal of catalyst K3.
High-voltage fence adjustable serial compensation device the most according to claim 1, it is characterized in that: first electrode of described bidirectional triode thyristor SCR is connected with the end of incoming cables of series capacitor bank, its second electrode is connected with catalyst K1, catalyst K2, the leading-out terminal of catalyst K3；Described high-speed eddy switch K0 and bidirectional triode thyristor SCR forms intelligent protection control system.
High-voltage fence adjustable serial compensation device the most according to claim 1, it is characterised in that: described high-speed eddy switch K0 is eddy current driving, vacuum extinction chopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610467987.7A CN105958501A (en) | 2016-06-24 | 2016-06-24 | Adjustable series-wound compensation apparatus for high-voltage power grid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610467987.7A CN105958501A (en) | 2016-06-24 | 2016-06-24 | Adjustable series-wound compensation apparatus for high-voltage power grid |
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| CN105958501A true CN105958501A (en) | 2016-09-21 |
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| CN201610467987.7A Pending CN105958501A (en) | 2016-06-24 | 2016-06-24 | Adjustable series-wound compensation apparatus for high-voltage power grid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106921167A (en) * | 2017-03-02 | 2017-07-04 | 安徽伊格瑞德电气设备有限公司 | A kind of self-shield series compensation device based on high energy type fuse FU |
| 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 |
| CN107394788A (en) * | 2017-09-06 | 2017-11-24 | 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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| CN2447979Y (en) * | 2000-07-11 | 2001-09-12 | 铁道部第一勘测设计院 | Reactive power compensating arrangement |
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| CN105119299A (en) * | 2015-08-26 | 2015-12-02 | 安徽徽电科技股份有限公司 | Middle and high voltage power grid distributed series compensation system |
| CN105337286A (en) * | 2015-11-26 | 2016-02-17 | 云南电网有限责任公司电力科学研究院 | Series compensation circuit, system and method for power distribution network |
| CN205829172U (en) * | 2016-06-24 | 2016-12-21 | 安徽徽电科技股份有限公司 | A kind of high-voltage fence adjustable serial compensation device |
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2016
- 2016-06-24 CN CN201610467987.7A patent/CN105958501A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2447979Y (en) * | 2000-07-11 | 2001-09-12 | 铁道部第一勘测设计院 | Reactive power compensating arrangement |
| CN2556830Y (en) * | 2002-06-06 | 2003-06-18 | 朱洪领 | Short-circuit current combined limiter |
| CN104979835A (en) * | 2015-06-22 | 2015-10-14 | 卞良琦 | Circuit structure of reactive compensation device |
| CN105119299A (en) * | 2015-08-26 | 2015-12-02 | 安徽徽电科技股份有限公司 | Middle and high voltage power grid distributed series compensation system |
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| CN205829172U (en) * | 2016-06-24 | 2016-12-21 | 安徽徽电科技股份有限公司 | A kind of high-voltage fence adjustable serial compensation device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921167A (en) * | 2017-03-02 | 2017-07-04 | 安徽伊格瑞德电气设备有限公司 | A kind of self-shield series compensation device based on high energy type fuse FU |
| 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 |
| CN107394788A (en) * | 2017-09-06 | 2017-11-24 | 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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Application publication date: 20160921 |
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