CN106655132A - Series compensation current-limiting integrated device - Google Patents
Series compensation current-limiting integrated device Download PDFInfo
- Publication number
- CN106655132A CN106655132A CN201611260519.9A CN201611260519A CN106655132A CN 106655132 A CN106655132 A CN 106655132A CN 201611260519 A CN201611260519 A CN 201611260519A CN 106655132 A CN106655132 A CN 106655132A
- Authority
- CN
- China
- Prior art keywords
- compensation capacitor
- current
- switch
- current limliting
- isolation switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
-
- 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
- H02J3/1807—Arrangements for adjusting, eliminating or compensating reactive power in networks using series compensators
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention relates to a series compensation current-limiting integrated device. The series compensation current-limiting integrated device comprises a compensation capacitor set C which is formed through parallelly connecting capacitors C1 and C2. The wire inlet end of the compensation capacitor set C is connected with the wire inlet end of a power distribution cabinet through an isolation switch G1, and the wire outlet end is connected with the wire outlet end of the power distribution cabinet through a current limiting reactor L and an isolation switch G2. Two ends of the compensator capacitor set C are connected with a nonlinear resistor zinc oxide FR and a discharging protecting system in parallel. Two ends of the current limiting reactor L are connected with a high-speed eddy current switch K1 in parallel. The discharging protecting system is used for performing shortcircuit protection on the compensation capacitor set C and discharging the electric energy of the compensation capacitor set. The nonlinear resistor zinc oxide FR is used for protecting the compensation capacitor set C from burndown. The series compensation current-limiting integrated device has advantages of realizing simple circuit structure, obtaining high safety and high reliability, limiting shortcircuit current strength in shortcircuit, improving voltage quality of a line through a series compensation capacitor, and greatly improving stability of an electric power system.
Description
Technical field
The present invention relates to electric power system power distribution equipment current limiting technique field, and in particular to one kind string is mended current limliting one and disguised
Put.
Background technology
With expanding economy, electric load growth also therewith drastically, the voltage that mesohigh long distance transmission line brings
Quality problems gradually come out.Larger for the less area of the density of population, radius of electricity supply, transmission line of electricity is generally longer.
In the case that early stage load is relatively light, by terminal voltage use demand is still met；But with social progress and economic development, heavy duty
User is continuously increased, and load current pressure drop on the line is substantially increased, and causes the supply voltage quality severe overweight to load,
The line end voltage having during load peak only has the 80% of rated voltage, cause near industry and residential electricity consumption equipment can not
Normal operation, directly affects the production and life of this area people.
It is known that power system is short-circuited during failure, short circuit current is generally tens times of rated current, or even up to a hundred
Times, with the sharp increase of electric load, constantly impact of the short circuit current of increase to power system electrical equipment is increasing；Together
When, the connecting-disconnecting function of existing breaker has been difficult to satisfaction and has cut-off huge short circuit current.Therefore to solve this great difficult problem, limit
The mode that stream reactor is concatenated in loop is widely used in power system electrical power trans mission/distribution system.Current-limiting reactor is connected on loop
Though in can limiting short-circuit current intensity, reduce impact of the short circuit current to electrical equipment in power system, and maintain bus electricity
Pressure, it is to avoid the further expansion of short trouble.But current-limiting reactor of connecting has many weak points, first, current-limiting reactor
The also very big financial burden of cause the user of huge reactive loss is produced in series loop；Secondly, current-limiting reactor is being chosen
Reactance value when, often exist and meet after the requirement of limiting short-circuit current, the contradiction of user side brownout under rated current.
During the long distance delivery of power system transmission and distribution network, transmission line of electricity can also produce induction reactance, substantially be equal to define one
The reactor in stealthy, potential concatenation user load loop is planted, equally causes user side voltage to reduce, while and having larger
Reactive loss.
The content of the invention
It is an object of the invention to provide a kind of string mends current limliting integrated apparatus, stability, the reliability of system are improve
And security, the quality of voltage of circuit is improved, while avoiding because interruption maintenance brings economic loss.
For achieving the above object, present invention employs technical scheme below：
One kind string mends current limliting integrated apparatus, including compensation capacitor group C composed in parallel by electric capacity C1, C2, the compensation electricity
The end of incoming cables Jing isolation switch G1 of container group C is connected with the end of incoming cables of power distribution cabinet, its leading-out terminal successively Jing current-limiting reactors L, every
It is connected with the leading-out terminal of power distribution cabinet from disconnecting link G2, the two ends of compensation capacitor group C are parallel with nonlinear resistance zinc oxide FR
And discharge prevention system, the two ends of the current-limiting reactor L are parallel with high-speed eddy switch K1, and the discharge prevention system is used for
To discharging its electric energy after the protection of compensation capacitor group C short circuit, the nonlinear resistance zinc oxide FR is used to protect compensation capacitor
Group C is not burned.
In such scheme, string mends current limliting integrated apparatus also includes isolation switch G3, the end of incoming cables of the isolation switch G3
It is connected with the end of incoming cables of isolation switch G1, its leading-out terminal is connected with the leading-out terminal of isolation switch G2.
In such scheme, the discharge prevention system includes current limliting damper RL and high-speed eddy switch K0, the current limliting
One end of damper RL is connected with the end of incoming cables of compensation capacitor C, and its other end Jing high-speed eddies switch K0 and compensation capacitor
The leading-out terminal of group C is connected.
In such scheme, the current limliting damper RL is in parallel and is constituted by inductance L and resistance R.
In such scheme, high-speed eddy switch K0, K1 controls it and cut-offs by the controller in power distribution cabinet.
In such scheme, described high-speed eddy switch K0, K1 are vacuum extinction formula breaker.
As shown from the above technical solution, the circuit that the present invention is adopted is simple, safe and reliable, and short circuit can be limited in short circuit
The intensity of electric current, can pass through the distribution induction reactance of compensation capacitor group C compensated line again, improve the stability of power system, change
The quality of voltage of kind circuit, can increase again power transmission distance and increase conveying capacity, improve the comprehensive utilization ratio of electric energy, by every
Components and parts in interruption maintenance or more changing device are realized from disconnecting link G1, G2, G3, the reliability and security of power supply is greatly improved, together
When avoid because interruption maintenance brings economic loss.
Description of the drawings
Fig. 1 is the electrical schematic diagram of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention will be further described：
As shown in figure 1, the string of the present embodiment mends current limliting integrated apparatus, including the compensating electric capacity composed in parallel by electric capacity C1, C2
Device group C, compensation capacitor group C be used for compensation circuit in induction reactance, the end of incoming cables Jing isolation switch G1 of compensation capacitor group C with
The end of incoming cables of power distribution cabinet is connected, and successively Jing current-limiting reactors L, isolation switch G2's its leading-out terminal are connected with the leading-out terminal of power distribution cabinet,
The two ends of compensation capacitor group C are parallel with nonlinear resistance zinc oxide FR and discharge prevention system, and the two ends of current-limiting reactor L are simultaneously
High-speed eddy switch K1 is associated with, discharge prevention system is used for discharging its electric energy after the protection of compensation capacitor group C short circuit.At this
Isolation switch G3 is also add in bright, the end of incoming cables of isolation switch G3 is connected with the end of incoming cables of isolation switch G1, its leading-out terminal with
The leading-out terminal of isolation switch G2 is connected.The intensity of the short circuit current that current-limiting reactor L is used in limiting circuit, greatly reduces short circuit
Impact of the electric current to electrical equipment.
The present embodiment, discharge prevention system includes current limliting damper RL and high-speed eddy switch K0, current limliting damper RL
One end be connected with the end of incoming cables of compensation capacitor C, the outlet of its other end Jing high-speed eddies switch K0 and compensation capacitor group C
End is connected.The current limliting damper RL is in parallel and is constituted by inductance L and resistance R, for releasing after the protection of series compensation capacitance group C short circuit
Put its electric energy.Isolation switch G1, G2, G3 are connected with the operating mechanism in power distribution cabinet, are cut-off by manually controlling it,
Isolation switch G1, G2, G3 are used for the components and parts of maintenance repair and trouble hunting more changing device of not having a power failure, by isolation switch G1,
G2, G3 realize service without power-off, greatly improve the reliability and security of power supply, while avoiding because interruption maintenance brings economy
Loss.High-speed eddy switch K0, K1 controls it and cut-offs by the controller in power distribution cabinet, high-speed eddy switch K0, K1
For vacuum extinction formula breaker.
Operation principle is as follows：When circuit normally runs, high-speed eddy switch K0 is in gate-dividing state, makes compensation capacitor group
In C series loops, distributed reactance in compensated line improves the stability of power system, improves the quality of voltage of circuit, improves
The comprehensive utilization ratio of electric energy；High-speed eddy switch K1 is in "on" position, and the current-limiting reactor L in short-circuit device realizes current limliting
Zero loss of reactor L.
When be short-circuited failure when, when line current exceedes normal operation allowed band, nonlinear resistance zinc oxide FR stands
The voltage at compensation capacitor group C two ends is limited, prevents compensation capacitor group C from persistently raising, high-speed eddy switch K0 quickly will
Compensation capacitor group C short circuit, it is ensured that the safety of compensation capacitor group C, and by damper RL quick release compensating electric capacities of discharging
Electric energy in device group C；Simultaneously high-speed eddy switch K1 separating brakes immediately, in current-limiting reactor L series loops, limiting short-circuit current
Intensity, reduce impact of the short circuit current to electrical equipment in power system, it is to avoid the further expansion of short trouble.Avoid
For after the requirement for meeting short circuit current maximum, the contradiction of user side brownout under rated current.
Isolation switch G1, G2, G3 are used for the components and parts of maintenance repair and trouble hunting more changing device of not having a power failure, by isolation
Disconnecting link G1, G2, G3 realize service without power-off, the reliability and security of power supply are greatly improved, while avoiding because of interruption maintenance
Bring economic loss.
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 without departing from design spirit of the present invention, technical side of the those of ordinary skill in the art to the present invention
Various modifications and improvement that case is made, all should fall in the protection domain of claims of the present invention determination.
Claims (6)
1. a kind of string mends current limliting integrated apparatus, it is characterised in that：Including the compensation capacitor group composed in parallel by electric capacity C1, C2
C, the end of incoming cables Jing isolation switch G1 of compensation capacitor group C is connected with the end of incoming cables of power distribution cabinet, and successively Jing is limited its leading-out terminal
Stream reactor L, isolation switch G2 are connected with the leading-out terminal of power distribution cabinet, and the two ends of compensation capacitor group C are parallel with non-linear
Resistance zinc oxide FR and discharge prevention system, the two ends of the current-limiting reactor L are parallel with high-speed eddy switch K1, the electric discharge
Protection system is used for discharging its electric energy after the protection of compensation capacitor group C short circuit, and the nonlinear resistance zinc oxide FR is used to protect
Shield compensation capacitor group C is not burned.
2. string according to claim 1 mends current limliting integrated apparatus, it is characterised in that：Also include isolation switch G3, it is described
The end of incoming cables of isolation switch G3 is connected with the end of incoming cables of isolation switch G1, and its leading-out terminal is connected with the leading-out terminal of isolation switch G2.
3. string according to claim 1 mends current limliting integrated apparatus, it is characterised in that：The discharge prevention system includes limit
Damper RL and high-speed eddy switch K0, described one end of current limliting damper RL is connected with the end of incoming cables of compensation capacitor C, its
Other end Jing high-speed eddies switch K0 is connected with the leading-out terminal of compensation capacitor group C.
4. string according to claim 3 mends current limliting integrated apparatus, it is characterised in that：The current limliting damper RL is by inductance
L and resistance R are in parallel composition.
5. string according to claim 3 mends current limliting integrated apparatus, it is characterised in that：High-speed eddy switch K0, K1 pass through
Controller in power distribution cabinet controls it and cut-offs.
6. string according to claim 3 mends current limliting integrated apparatus, it is characterised in that：The high-speed eddy switchs K0, K1
For vacuum extinction formula breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611260519.9A CN106655132A (en) | 2016-12-30 | 2016-12-30 | Series compensation current-limiting integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611260519.9A CN106655132A (en) | 2016-12-30 | 2016-12-30 | Series compensation current-limiting integrated device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106655132A true CN106655132A (en) | 2017-05-10 |
Family
ID=58838813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611260519.9A Pending CN106655132A (en) | 2016-12-30 | 2016-12-30 | Series compensation current-limiting integrated device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106655132A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394756A (en) * | 2017-09-06 | 2017-11-24 | 安徽徽电科技股份有限公司 | A kind of direct current based on LC concussions cut-offs system |
| CN109787226A (en) * | 2019-01-30 | 2019-05-21 | 国家电网有限公司 | A kind of throttle system and its throttling method promoting power grid efficiency |
| CN112509858A (en) * | 2020-12-21 | 2021-03-16 | 西安交通大学 | Double-break interlocking quick switch for integrated series compensation current limiting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4158864A (en) * | 1977-07-05 | 1979-06-19 | Electric Power Research Institute, Inc. | Fault current limiter |
| CN202550511U (en) * | 2012-03-29 | 2012-11-21 | 上海市电力公司 | Fault current limiter (FCL) device for outlet of line of transformer substation |
| CN105790227A (en) * | 2016-04-20 | 2016-07-20 | 安徽伊格瑞德电气设备有限公司 | Series compensation zero-loss current limiting integrated system |
| CN106099938A (en) * | 2016-06-24 | 2016-11-09 | 安徽尚途电力保护设备有限公司 | A kind of high-voltage fence series compensation device |
| CN206332445U (en) * | 2016-12-30 | 2017-07-14 | 安徽徽电科技股份有限公司 | One kind string mends current limliting integrated apparatus |
-
2016
- 2016-12-30 CN CN201611260519.9A patent/CN106655132A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4158864A (en) * | 1977-07-05 | 1979-06-19 | Electric Power Research Institute, Inc. | Fault current limiter |
| CN202550511U (en) * | 2012-03-29 | 2012-11-21 | 上海市电力公司 | Fault current limiter (FCL) device for outlet of line of transformer substation |
| CN105790227A (en) * | 2016-04-20 | 2016-07-20 | 安徽伊格瑞德电气设备有限公司 | Series compensation zero-loss current limiting integrated system |
| CN106099938A (en) * | 2016-06-24 | 2016-11-09 | 安徽尚途电力保护设备有限公司 | A kind of high-voltage fence series compensation device |
| CN206332445U (en) * | 2016-12-30 | 2017-07-14 | 安徽徽电科技股份有限公司 | One kind string mends current limliting integrated apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394756A (en) * | 2017-09-06 | 2017-11-24 | 安徽徽电科技股份有限公司 | A kind of direct current based on LC concussions cut-offs system |
| CN109787226A (en) * | 2019-01-30 | 2019-05-21 | 国家电网有限公司 | A kind of throttle system and its throttling method promoting power grid efficiency |
| CN112509858A (en) * | 2020-12-21 | 2021-03-16 | 西安交通大学 | Double-break interlocking quick switch for integrated series compensation current limiting device |
| CN112509858B (en) * | 2020-12-21 | 2021-10-19 | 西安交通大学 | Double-break interlocking quick switch for integrated series compensation current limiting device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |