CN203456877U - A high-voltage reactive power compensation apparatus used for stabilizing the power grid voltage of a power supply system - Google Patents
A high-voltage reactive power compensation apparatus used for stabilizing the power grid voltage of a power supply system Download PDFInfo
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- CN203456877U CN203456877U CN201320585823.6U CN201320585823U CN203456877U CN 203456877 U CN203456877 U CN 203456877U CN 201320585823 U CN201320585823 U CN 201320585823U CN 203456877 U CN203456877 U CN 203456877U
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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
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- Y02E40/30—Reactive power compensation
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Abstract
The utility model discloses a high-voltage reactive power compensation apparatus used for stabilizing the power grid voltage of a power supply system. The input end of a high-voltage silicon stack diode D1 is electrically connected with the phase UA of the power grid. The output end of the high-voltage silicon stack diode D1 is electrically connected with one end of a high-voltage current-limiting resistor r1. A series circuit formed by the high-voltage silicon stack diode D1 and the high-voltage current-limiting resistor r1 is connected with a permanent magnetic switch KA in parallel. The input end of the permanent magnetic switch KA is electrically connected with the phase UA of the power grid. The output end of the permanent magnetic switch KA and the other end of the high-voltage current-limiting resistor r1 are both electrically connected with one end of a reactor L1. The other end of the reactor L1 is electrically connected with one end of a capacitor C1 and one end of a discharging resistor R1. One end of a reactor L2 is electrically connected with the phase UB of the power grid. The other end of the reactor L2 is electrically connected with one end of a capacitor C2 and one end of a discharging resistor R2. The high-voltage reactive power compensation apparatus may effectively decrease inrush current formed when a high-voltage switch is closed, reduces an overvoltage damage risk of power supply and distribution devices, and prolongs the service lives of the capacitors.
Description
Technical field
The utility model relates to a kind of, particularly a kind of for the high voltage reactive power-compensating device for stable power-supplying system line voltage.
Background technology
Reactive power compensation works to improve the power factor of electrical network in electronic power system, reduces the loss of supply transformer and conveying circuit, improves power supplying efficiency, improves power supply environment.In reactive power compensator in the prior art, conventionally with capacitor, realize reactive power compensation.Because capacitor is the device that voltage can not transition, therefore, capacitor can form very large shoving while dropping into.General high-voltage switch gear combined floodgate shoving 1-5 times of generation steady-state current; Once the filter generation parallel resonance that this shoves with user, will produce the impulse overvoltage of 3-10 times, cause often occurring that overvoltage damages the situation of power supplying and distributing equipment.Therefore, capacitor drops into shoving of forming can produce disadvantageous interference to electrical network, also can reduce the useful life of capacitor.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model be to provide a kind of for the high voltage reactive power-compensating device for stable power-supplying system line voltage, effectively reduce shoving of forming when high-voltage switch gear closes a floodgate, reduce the risk that power supply and controller switching equipment overvoltage damage, extend the useful life of capacitor.
The technical solution of the utility model is achieved in that the high voltage reactive power-compensating device for stable power-supplying system line voltage, the input of high voltage silicon stack diode D1 and electrical network U
abe electrically connected, the output of high voltage silicon stack diode D1 is electrically connected to one end of high-voltage and current-limitation resistance r1, series circuit and permanent-magnetic switching K that high voltage silicon stack diode D1 and high-voltage and current-limitation resistance r1 form
aparallel connection, permanent-magnetic switching K
ainput and electrical network U
abe electrically connected, permanent-magnetic switching K
aoutput and the other end of high-voltage and current-limitation resistance r1 be all electrically connected to one end of reactor L1, the other end of reactor L1 is electrically connected to one end of capacitor C1 and one end of discharge resistance R1 respectively, capacitor C1 is in parallel with discharge resistance R1; One end of reactor L2 and electrical network U
bbe electrically connected, the other end of reactor L2 is electrically connected to one end of capacitor C2 and one end of discharge resistance R2 respectively, and capacitor C2 is in parallel with discharge resistance R2; The input of high voltage silicon stack diode D3 and electrical network U
cbe electrically connected, the output of high voltage silicon stack diode D3 is electrically connected to one end of high-voltage and current-limitation resistance r3, series circuit and permanent-magnetic switching K that high voltage silicon stack diode D3 and high-voltage and current-limitation resistance r3 form
bparallel connection, permanent-magnetic switching K
binput and electrical network U
cbe electrically connected, permanent-magnetic switching K
boutput and the other end of high-voltage and current-limitation resistance r3 be all electrically connected to one end of reactor L3, the other end of reactor L3 is electrically connected to one end of capacitor C3 and one end of discharge resistance R3 respectively, capacitor C3 is in parallel with discharge resistance R3; The other end of the other end of the other end of the other end of the other end of the other end of capacitor C1, discharge resistance R1, capacitor C2, discharge resistance R2, capacitor C3 and the discharge resistance R3 formation mid point that is electrically connected.
The above-mentioned high voltage reactive power-compensating device for stable power-supplying system line voltage, discharge resistance R1, discharge resistance R2 and discharge resistance R3 are 1 megaohm, high-voltage and current-limitation resistance r1 and high-voltage and current-limitation resistance r3 are 8 kilo-ohms, the voltage drop of the voltage drop of the voltage drop of reactor L1, reactor L2 and reactor L3 is 5%, the rated voltage of high voltage silicon stack diode D1, high voltage silicon stack diode D2 and high voltage silicon stack diode D3 is 3KV, rated current is 2A, and the rated voltage of capacitor C1, capacitor C2 and capacitor C3 is 3KV～6KV.
The above-mentioned high voltage reactive power-compensating device for stable power-supplying system line voltage, the input of line voltage synchronizing indicator respectively with electrical network U
awith electrical network U
cconnect, the output of switching command switch S is connected with the input of phase-controlled device respectively with the output of line voltage synchronizing indicator, the output of phase-controlled device is connected with the input of permanent magnetism coil actuator, the output of permanent magnetism coil actuator respectively with input and the high voltage permanent K switch of high voltage permanent K switch A
binput connect.
The above-mentioned high voltage reactive power-compensating device for stable power-supplying system line voltage, phase-controlled device comprises power frequency reference voltage signal memory cell, switching is computing unit and switching signal output unit constantly, the output of switching command switch S, the output of the output of line voltage synchronizing indicator and power frequency reference voltage signal memory cell is connected with the input of switching moment computing unit respectively, the switching constantly output of computing unit is connected with the input of switching signal output unit, the output of switching signal output unit is connected with the input of permanent magnetism coil actuator.
The beneficial effects of the utility model are: the utility model can reduce for the high voltage reactive power-compensating device of stable power-supplying system line voltage shoving of forming when high-voltage switch gear closes a floodgate effectively, reduce the risk that power supply and controller switching equipment overvoltage damage, extend the useful life of capacitor.
Accompanying drawing explanation
Fig. 1 is that the utility model is for the schematic diagram of the high voltage reactive power-compensating device of stable power-supplying system line voltage.
Fig. 2 is that the utility model is for the switching schematic diagram of the high voltage reactive power-compensating device of stable power-supplying system line voltage.
Embodiment
As shown in Figure 1, the high voltage reactive power-compensating device at the present embodiment for stable power-supplying system line voltage, the input of high voltage silicon stack diode D1 and electrical network U
abe electrically connected, the output of high voltage silicon stack diode D1 is electrically connected to one end of high-voltage and current-limitation resistance r1, and high voltage silicon stack diode D1 is in parallel with permanent-magnetic switching KA with the series circuit that high-voltage and current-limitation resistance r1 forms, permanent-magnetic switching K
ainput and electrical network U
abe electrically connected, permanent-magnetic switching K
aoutput and the other end of high-voltage and current-limitation resistance r1 be all electrically connected to one end of reactor L1, the other end of reactor L1 is electrically connected to one end of capacitor C1 and one end of discharge resistance R1 respectively, capacitor C1 is in parallel with discharge resistance R1; One end of reactor L2 and electrical network U
bbe electrically connected, the other end of reactor L2 is electrically connected to one end of capacitor C2 and one end of discharge resistance R2 respectively, and capacitor C2 is in parallel with discharge resistance R2; The input of high voltage silicon stack diode D3 and electrical network U
cbe electrically connected, the output of high voltage silicon stack diode D3 is electrically connected to one end of high-voltage and current-limitation resistance r3, series circuit and permanent-magnetic switching K that high voltage silicon stack diode D3 and high-voltage and current-limitation resistance r3 form
bparallel connection, permanent-magnetic switching K
binput and electrical network U
cbe electrically connected, permanent-magnetic switching K
boutput and the other end of high-voltage and current-limitation resistance r3 be all electrically connected to one end of reactor L3, the other end of reactor L3 is electrically connected to one end of capacitor C3 and one end of discharge resistance R3 respectively, capacitor C3 is in parallel with discharge resistance R3; The other end of the other end of the other end of the other end of the other end of the other end of capacitor C1, discharge resistance R1, capacitor C2, discharge resistance R2, capacitor C3 and the discharge resistance R3 formation mid point that is electrically connected.
In the present embodiment, discharge resistance R1, discharge resistance R2 and discharge resistance R3 are 1 megaohm, high-voltage and current-limitation resistance r1 and high-voltage and current-limitation resistance r3 are 8 kilo-ohms, the voltage drop of the voltage drop of the voltage drop of reactor L1, reactor L2 and reactor L3 is 5%, the rated voltage of high voltage silicon stack diode D1, high voltage silicon stack diode D2 and high voltage silicon stack diode D3 is 3KV, rated current is 2A, and the rated voltage of capacitor C1, capacitor C2 and capacitor C3 is 3KV～6KV.
As shown in Figure 2, the input of line voltage synchronizing indicator 1 respectively with electrical network U
awith electrical network U
cconnect, phase-controlled device 2 comprises power frequency reference voltage signal memory cell, switching is computing unit and switching signal output unit constantly, the output of switching command switch S, the output of the output of line voltage synchronizing indicator 1 and power frequency reference voltage signal memory cell is connected with the input of switching moment computing unit respectively, the switching constantly output of computing unit is connected with the input of switching signal output unit, the output of switching signal output unit is connected with the input of permanent magnetism coil actuator 3, the output of permanent magnetism coil actuator 3 respectively with input and the high voltage permanent K switch of high voltage permanent K switch A
binput connect.
The present embodiment is used for the high voltage reactive power-compensating device of stable power-supplying system line voltage when work: the switching of phase-controlled device 2 constantly computing unit receives after the switching order of switching command switch S, the power frequency reference voltage signal that the switching line voltage synchronizing signal that computing unit transmits according to line voltage synchronizing indicator 1 constantly and power frequency reference voltage signal memory cell transmit calculates switching constantly, and this switching is flowed to switching signal output unit constantly, switching signal output unit is to permanent magnetism coil actuator 3 output switching signals, permanent magnetism coil actuator 3 is according to the switching signal output driving current of input, make high voltage permanent K switch
a, high voltage permanent K switch
bcombined floodgate or separating brake are [in high voltage permanent K switch
atwo ends and high voltage permanent K switch
bboth end voltage approach zero, and high voltage permanent K switch
atwo ends and high voltage permanent K switch
bthe rate of change of both end voltage approach for zero the moment, carry out closing operation respectively and drop into capacitor, at electric current, be zero separating brake and capacitor is excised from electrical network constantly, thereby guarantee impulse current lower than steady-state current 50%].In the present embodiment: high voltage permanent switch closes a floodgate, drop into capacitor, line voltage rises; High voltage permanent switch separating brake, exits capacitor, and line voltage declines.The utility model makes inrush phenomenon lower than 50% of steady-state current, even parallel resonance, impulse overvoltage is lower than 10% of general high-voltage switch gear impulse overvoltage.And the closing moment of each single-phase high voltage permanent-magnetic switching and separating brake can be controlled constantly, precision is less than or equal to 0.5 millisecond; High voltage permanent K switch
atwo ends and high voltage permanent K switch
btwo ends high voltage silicon stack diode and the current-limiting resistance for charging in parallel respectively, high voltage permanent K switch
awith high voltage permanent K switch
bafter disconnection, for high voltage silicon stack diode and the current-limiting resistance charging, will keep capacitor no longer to discharge; Discharge resistance is 10 minutes by capacitor discharge to 0 time used, only have ten thousand/ loss, guarantee that again discharge time is not oversize simultaneously, to again drop into, be very suitable for power supply grid operation.
Above-described embodiment is only for the invention example is clearly described, and the not restriction to the invention embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And the apparent variation of being amplified out thus or change are still among the protection range in the invention claim.
Claims (4)
1. for the high voltage reactive power-compensating device of stable power-supplying system line voltage, it is characterized in that the input of high voltage silicon stack diode D1 and electrical network U
abe electrically connected, the output of high voltage silicon stack diode D1 is electrically connected to one end of high-voltage and current-limitation resistance r1, series circuit and permanent-magnetic switching K that high voltage silicon stack diode D1 and high-voltage and current-limitation resistance r1 form
aparallel connection, permanent-magnetic switching K
ainput and electrical network U
abe electrically connected, permanent-magnetic switching K
aoutput and the other end of high-voltage and current-limitation resistance r1 be all electrically connected to one end of reactor L1, the other end of reactor L1 is electrically connected to one end of capacitor C1 and one end of discharge resistance R1 respectively, capacitor C1 is in parallel with discharge resistance R1;
One end of reactor L2 and electrical network U
bbe electrically connected, the other end of reactor L2 is electrically connected to one end of capacitor C2 and one end of discharge resistance R2 respectively, and capacitor C2 is in parallel with discharge resistance R2;
The input of high voltage silicon stack diode D3 and electrical network U
cbe electrically connected, the output of high voltage silicon stack diode D3 is electrically connected to one end of high-voltage and current-limitation resistance r3, series circuit and permanent-magnetic switching K that high voltage silicon stack diode D3 and high-voltage and current-limitation resistance r3 form
bparallel connection, permanent-magnetic switching K
binput and electrical network U
cbe electrically connected, permanent-magnetic switching K
boutput and the other end of high-voltage and current-limitation resistance r3 be all electrically connected to one end of reactor L3, the other end of reactor L3 is electrically connected to one end of capacitor C3 and one end of discharge resistance R3 respectively, capacitor C3 is in parallel with discharge resistance R3;
The other end of the other end of the other end of the other end of the other end of the other end of capacitor C1, discharge resistance R1, capacitor C2, discharge resistance R2, capacitor C3 and the discharge resistance R3 formation mid point that is electrically connected.
2. the high voltage reactive power-compensating device for stable power-supplying system line voltage according to claim 1, it is characterized in that, discharge resistance R1, discharge resistance R2 and discharge resistance R3 are 1 megaohm, high-voltage and current-limitation resistance r1 and high-voltage and current-limitation resistance r3 are 8 kilo-ohms, the voltage drop of reactor L1, the voltage drop of the voltage drop of reactor L2 and reactor L3 is 5%, high voltage silicon stack diode D1, the rated voltage of high voltage silicon stack diode D2 and high voltage silicon stack diode D3 is 3KV, rated current is 2A, capacitor C1, the rated voltage of capacitor C2 and capacitor C3 is 3KV～6KV.
3. the high voltage reactive power-compensating device for stable power-supplying system line voltage according to claim 1 and 2, is characterized in that, the input of line voltage synchronizing indicator (1) respectively with electrical network U
awith electrical network U
cconnect, the output of the output of switching command switch S and line voltage synchronizing indicator (1) is connected with the input of phase-controlled device (2) respectively, the output of phase-controlled device (2) is connected with the input of permanent magnetism coil actuator (3), the output of permanent magnetism coil actuator (3) respectively with high voltage permanent K switch
ainput and high voltage permanent K switch
binput connect.
4. the high voltage reactive power-compensating device for stable power-supplying system line voltage according to claim 3, it is characterized in that, phase-controlled device (2) comprises power frequency reference voltage signal memory cell, switching is computing unit and switching signal output unit constantly, the output of switching command switch S, the output of the output of line voltage synchronizing indicator (1) and power frequency reference voltage signal memory cell is connected with the input of switching moment computing unit respectively, the switching constantly output of computing unit is connected with the input of switching signal output unit, the output of switching signal output unit is connected with the input of permanent magnetism coil actuator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320585823.6U CN203456877U (en) | 2013-09-23 | 2013-09-23 | A high-voltage reactive power compensation apparatus used for stabilizing the power grid voltage of a power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320585823.6U CN203456877U (en) | 2013-09-23 | 2013-09-23 | A high-voltage reactive power compensation apparatus used for stabilizing the power grid voltage of a power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456877U true CN203456877U (en) | 2014-02-26 |
Family
ID=50136730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320585823.6U Expired - Lifetime CN203456877U (en) | 2013-09-23 | 2013-09-23 | A high-voltage reactive power compensation apparatus used for stabilizing the power grid voltage of a power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203456877U (en) |
-
2013
- 2013-09-23 CN CN201320585823.6U patent/CN203456877U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: QINAN POWER SUPPLY BRANCH, STATE GRID CHONGQING ELECTRIC POWER COMPANY Effective date: 20140721 Owner name: QINAN POWER SUPPLY BRANCH, STATE GRID CHONGQING EL Free format text: FORMER OWNER: BEIJING BAONENG YIJING ELECTRICAL TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20140721 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 401420 QIJIANG, CHONGQING TO: 100017 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140721 Address after: 100017 West Chang'an Avenue, Beijing, No. 86, No. Patentee after: State Grid Corporation of China Patentee after: QINAN POWER SUPPLY BRANCH OF STATE GRID CHONGQING ELECTRIC POWER Co. Patentee after: BEIJING BAONENG JINGYI ELECTRICAL SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 401420, Shuanglong Road, Wen long street, Qijiang District, Chongqing, 51 Patentee before: QINAN POWER SUPPLY BRANCH OF STATE GRID CHONGQING ELECTRIC POWER Co. Patentee before: BEIJING BAONENG JINGYI ELECTRICAL SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |
|
| CX01 | Expiry of patent term |