CN201946985U - 10 kV power system intelligence dynamic reactive power compensation switch device - Google Patents
10 kV power system intelligence dynamic reactive power compensation switch device Download PDFInfo
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- CN201946985U CN201946985U CN2010206927846U CN201020692784U CN201946985U CN 201946985 U CN201946985 U CN 201946985U CN 2010206927846 U CN2010206927846 U CN 2010206927846U CN 201020692784 U CN201020692784 U CN 201020692784U CN 201946985 U CN201946985 U CN 201946985U
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- thyristor
- power
- intelligence
- contactor
- intelligent dynamic
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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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- 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
- Y02E40/40—Arrangements for reducing harmonics
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
A 10 kV power line intelligence dynamic reactive power switch device comprises an intelligence dynamic control system and an intelligence dynamic switch system, wherein the intelligence dynamic control system comprises an intelligence controller, and a voltage transformer and a current transformer which are respectively connected with the intelligence controller. The intelligence dynamic switch system comprises a thyristor and an alternating current contactor which are connected in parallel, and a capacitor unit connected in series with the thyristor and the alternating current contactor. The intelligence dynamic switch system satisfies power factor demands of a real-time operating state by utilizing the thyristor only during connection and disconnection and utilizing the alternate current contactor during normal operation to switch the capacitor unit. The 10 kV power line intelligence dynamic reactive power switch device is capable of quickly throwing on a power reactive compensation capacitor and achieves the effect of zero voltage throwing-on and zero current throwing-off and has the advantages of low inrush current, no production of overvoltage, long service life and low power consumption and the like.
Description
Technical field
The utility model relates to a kind of electric control system of joining the power supply field, particularly a kind of 10kV Power System Intelligent dynamic passive compensation switching device.
Background technology
Along with power system development and technological progress, no matter be power supply department or user, more and more pay close attention to having the reactive power compensation measure that reduces line loss and improve quality of power supply effect.Reactive power compensation not only requires enough reactive compensation capacities, and requires to be had flexibility and higher automatization level by compensation arrangement, to reach the purpose of optimal compensating.
Reactive power compensation in the electric power system in the 10/0.4kV distribution system is divided into the reactive power compensation of 10kV system and 0.4kV system reactive power compensation two parts, wherein the reactive power compensation of 0.4kV system can realize dynamic passive compensation control and intelligent automatic switching, and the control of the reactive power compensation in the 10kV system can only be carried out static state (A.C. contactor) switching, and can not carry out the Intelligent Dynamic switching.In the 10kV distribution system, use static AC contactor switching not only can produce and shove, and the contactor reaction speed is slow, can not the no-voltage switching, cause electric arc to produce.
Summary of the invention
In order to solve the shortcoming that overcomes prior art, the utility model proposes a kind of 10kV Power System Intelligent dynamic passive compensation switching device, realization Intelligent Dynamic opening-closing capacitor bank is carried out reactive power compensation to load in the 10kV electric power system.
The technical solution adopted in the utility model can be described as:
A kind of 10kV Power System Intelligent dynamic passive compensation switching device, comprise interconnected Intelligent Dynamic control system and Intelligent Dynamic fling-cut system, wherein the Intelligent Dynamic control system comprises intelligent controller and the voltage transformer summation current transformer that is connected respectively with the input of described intelligent controller, described voltage transformer summation current transformer is connected with the 10kV power line respectively to obtain the real-time voltage current signal again, described Intelligent Dynamic fling-cut system one end connects the 10kV bus, the other end connects ground wire, it comprises thyristor and A.C. contactor in parallel, and with described thyristor and A.C. contactor capacitor connected in series group, wherein the control end of thyristor and A.C. contactor is connected with the output of described intelligent controller.
As a kind of improvement of above invention, described Intelligent Dynamic fling-cut system also includes the current limiting reactor that is connected in series with described capacitor group, and with series capacitors group and current limiting reactor discharge coil in parallel.
The beneficial effects of the utility model are:
A kind of 10kV Power System Intelligent dynamic reactive switching device that the utility model proposes, can drop into reactive-load compensation capacitor fast, reach the no-voltage input, the purpose of zero current excision, have lowly shove, do not produce overvoltage, the life-span is long and advantage such as low in energy consumption.
This device also has the automaticity height, and high reliability features in the useful life of having improved the capacitor switching device greatly, has played important function to the quality that guarantees the 10kV supply power voltage.
Description of drawings
Fig. 1 is a system schematic of the present utility model.
Embodiment
As shown in Figure 1, a kind of 10kV Power System Intelligent dynamic reactive switching device that the utility model proposes is a series connection current limiting reactor and install the thuristor throw-in and throw-off device and form in the shunt capacitor loop, and includes control system and A.C. contactor.Switch on and off the employing thyristor, adopt contactor during normal power-up, this can guarantee the no-voltage switching, no-flashy-flow, and the contact is difficult for burning.
Concrete going up said, as shown in Figure 1, the utility model comprises interconnected Intelligent Dynamic control system 1 and Intelligent Dynamic fling-cut system 2, wherein Intelligent Dynamic control system 1 comprises intelligent controller 11 and voltage transformer 12 summation current transformers 13 that are connected respectively with the input of described intelligent controller 11, and described voltage transformer 12 summation current transformers 13 are connected with the 10kV power line respectively to obtain the real-time voltage current signal and to be transferred to intelligent controller 11 again.Through modulating transformation success rate factor (being the cosine value of the phase difference θ between voltage and the electric current), intelligent controller 11 sends control signal and gives Intelligent Dynamic fling-cut system 2 these voltage and current signals when it is lower than or surpasses set point (cos θ=0.9) in intelligent controller 11.
Described Intelligent Dynamic fling-cut system 2 one ends connect the 10KV bus, the other end connects ground wire, it comprises thyristor 21 and A.C. contactor 22 in parallel, and with described thyristor 21 and A.C. contactor 21 capacitor connected in series groups 23, wherein the control end of thyristor 21 and A.C. contactor 22 is connected with the output of described intelligent controller 11.Like this, intelligent controller 11 control thyristor 21 and A.C. contactor 22 sequentially-operatings, its sequence of movement is:
Thyristor 21 conductings when capacitor 23 drops into, A.C. contactor 22 is connected then, and cutoff thyristor 21 again.
Thyristor 21 first conductings during capacitor 23 excision, cutoff thyristor 21 again after A.C. contactor 22 disconnects then.
Like this, Intelligent Dynamic fling-cut system 2 by only using thyristor 21 when switching on and off, and is used A.C. contactor 22 opening-closing capacitor bank 23 when normal power-up under the control of intelligence control system 1, to satisfy the power factor (PF) requirement of real-time running state.
In addition, the interference problem that simple reactive-load compensation equipment not only can not harmonic carcellation, electric capacity has enlarge-effect to harmonic current on the contrary.Therefore capacitor group 23 also is connected in series with the problem that current limiting reactor 24 harmonic carcellations amplify in the present embodiment.For also being parallel with discharge coil 25 on capacitor group 23 after described being connected in series and the current limiting reactor 24 at the residual charge during electric power system has a power failure the rapid vent discharge container group in back.
Claims (2)
1. 10kV Power System Intelligent dynamic passive compensation switching device, it is characterized in that: it comprises interconnected Intelligent Dynamic control system (1) and Intelligent Dynamic fling-cut system (2), wherein Intelligent Dynamic control system (1) comprises intelligent controller (11) and voltage transformer (12) summation current transformer (13) that is connected respectively with the input of described intelligent controller (11), and described voltage transformer (12) summation current transformer (13) is connected with the 10kV power line respectively to obtain the real-time voltage current signal again; Described Intelligent Dynamic fling-cut system (2) one ends connect the 10kV bus, the other end connects ground wire, it comprises thyristor (21) and the A.C. contactor (22) that is connected in parallel, and with described thyristor (21) and A.C. contactor (22) capacitor connected in series group (23), wherein the control end of thyristor (21) and A.C. contactor (22) is connected with the output of described intelligent controller (11).
2. a kind of 10kV Power System Intelligent dynamic passive compensation switching device according to claim 1, it is characterized in that: described Intelligent Dynamic fling-cut system (2) also includes the current limiting reactor (24) that is connected in series with the capacitor group (23) that drops into, and the discharge coil (25) that is in parallel with capacitor connected in series group (23) and current limiting reactor (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206927846U CN201946985U (en) | 2010-12-31 | 2010-12-31 | 10 kV power system intelligence dynamic reactive power compensation switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206927846U CN201946985U (en) | 2010-12-31 | 2010-12-31 | 10 kV power system intelligence dynamic reactive power compensation switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946985U true CN201946985U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206927846U Expired - Lifetime CN201946985U (en) | 2010-12-31 | 2010-12-31 | 10 kV power system intelligence dynamic reactive power compensation switch device |
Country Status (1)
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| CN (1) | CN201946985U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703377A (en) * | 2016-03-14 | 2016-06-22 | 重庆明斯克电气有限责任公司 | Dynamic switching control circuit for medium-voltage power capacitor |
-
2010
- 2010-12-31 CN CN2010206927846U patent/CN201946985U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703377A (en) * | 2016-03-14 | 2016-06-22 | 重庆明斯克电气有限责任公司 | Dynamic switching control circuit for medium-voltage power capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 528399 Dongle Road 123, Yunlu Community Resident Committee, Daliang Street Office, Shunde District, Foshan City, Guangdong Province Patentee after: SHUNDE ELECTRIC POWER DESIGN INSTITUTE CO., LTD. Address before: 528399 No. 81 Tonghui Road, Daliang, Shunde District, Foshan City, Guangdong Province Patentee before: Foshan Shunde Electric Power Design Institute Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110824 |
|
| CX01 | Expiry of patent term |