CN109066719A - A kind of reactive power compensator and reactive-load compensation method - Google Patents
A kind of reactive power compensator and reactive-load compensation method Download PDFInfo
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- CN109066719A CN109066719A CN201811089605.7A CN201811089605A CN109066719A CN 109066719 A CN109066719 A CN 109066719A CN 201811089605 A CN201811089605 A CN 201811089605A CN 109066719 A CN109066719 A CN 109066719A
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- control unit
- reactive power
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- power compensator
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000008901 benefit Effects 0.000 claims abstract description 16
- 230000003993 interaction Effects 0.000 claims abstract description 11
- 230000000295 complement effect Effects 0.000 claims description 28
- 239000003990 capacitor Substances 0.000 claims description 19
- 241000208340 Araliaceae Species 0.000 claims description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 2
- 235000008434 ginseng Nutrition 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- 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
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1864—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein the stepless control of reactive power is obtained by at least one reactive element connected in series with a semiconductor switch
-
- 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)
- Control Of Electrical Variables (AREA)
Abstract
The invention discloses a kind of reactive power compensator and reactive-load compensation methods, including cabinet body, compensating unit, man-machine interaction unit, control unit and heat-sink unit, the heat-sink unit setting is on the housing, the compensating unit and described control unit are arranged in the shell, and the compensating unit, the heat-sink unit and the man-machine interaction unit are separately connected described control unit.Reactive power compensator of the invention can carry out being divided to benefit respectively and mend two kinds of compensation ways altogether, and not only capacity is big, but also speed is fast, in addition can also be radiated according to the control heat-sink unit of the operating temperature intelligence of device to the present apparatus, ensure that the safety of the present apparatus.
Description
Technical field
The present invention relates to reactive power compensation technology field, in particular to a kind of reactive power compensator and reactive-load compensation method.
Background technique
Reactive compensation is a kind of power factor for plaing a part of to improve power grid in power supply system, reduces power supply and become
The loss of depressor and conveying circuit improves power supply efficiency, improves the technology of power supply environment.So reactive power compensation device is in electricity
An indispensable very important position is in power power supply system.Reasonable selection compensation device, can accomplish maximum
The loss of the reduction power grid of limit, improves power grid quality.Conversely, may cause power supply system such as selection or improper use, electricity
Pressure fluctuation, the factors such as harmonic wave increase.
But traditional low-voltage reactive compensator changes slow occasion in load reactive power, can preferably solve
The certainly relatively low problem of power factor, but change faster occasion in reactive power and basically can not track the quick variation of load.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of reactive power compensator and reactive-load compensation methods, existing to solve
The reactive compensation of technology not in time the problem of.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is as follows:
A kind of reactive power compensator, including cabinet body, compensating unit, man-machine interaction unit, control unit and heat-sink unit, institute
State heat-sink unit setting on the housing, the compensating unit and described control unit are arranged in the shell, the benefit
It repays unit, the heat-sink unit and the man-machine interaction unit and is separately connected described control unit,
The compensating unit includes dividing complementary modulus block and altogether complementary modulus block, described to divide complementary modulus block output end and the complementary modulus block altogether defeated
Outlet is separately connected protection circuit, described that complementary modulus block is divided to include A phase compensation circuit, B phase compensation circuit and C phase compensation circuit, institute
It states A phase compensation circuit, the B phase compensation circuit and the C phase compensation circuit and respectively includes fling-cut switch and point benefit capacitor group,
The A phase compensation circuit, the B phase compensation circuit and the Y-shaped connection of C phase compensation circuit, the complementary modulus block altogether includes Δ
The total benefit capacitor group and fling-cut switch of type connection.
Optional: the man-machine interaction unit includes tangible display screen, and the tangible display screen is arranged on cabinet body top
Portion or cabinet body side.
Optional: the heat-sink unit includes the radiator fan being arranged on the cabinet body, and the radiator fan is being more than
It is automatically turned on when threshold value by control unit.
Optional: the threshold value is 40-55 DEG C.
Optional: the protection circuit includes breaker.
Optional: described control unit includes master control unit, A phase control unit, B phase control unit and C phase control list
Member, between the total complementary modulus block and the protection circuit, the A phase control unit is set described for the master control unit setting
Between A phase compensation circuit and the protection circuit, the B phase control unit is set in the B phase compensation circuit and protection electricity
Between road, the C phase control unit is set between the C phase compensation circuit and the protection circuit.
It is optional: to further include three current transformers, three current transformers are separately positioned on the protection circuit
A phase input terminal, B phase input terminal and C phase input terminal.
According to another aspect of the present invention, a kind of reactive-load compensation method is provided, comprising the following steps:
Step 1, the operating mode that reactive power compensator is arranged, the operating mode include manual mode, automatic mode, stop
Machine mode and emergency stop mode；
The manual mode is used for by the way that capacitor switching, the automatic mode is used for described device automatic switching manually
Capacitor, the shutdown mode is for cutting off capacitor, and the emergency stop mode is for cutting off all capacitors；
Step 2, the system parameter that reactive power compensator is arranged, the system parameter include point benefit module parameter and a total complementary modulus
Block parameter；
The operational temperature information of step 3, the real-time running state parameter for obtaining reactive power compensator and reactive power compensator；
Step 4 is based on the running state parameter, judges whether the reactive power compensator needs to compensate, and, it is based on
The operational temperature information judges whether to need to radiate to the reactive power compensator；
If step 5, the reactive power compensator need to compensate, controls the compensating unit and carries out automatic switching compensation,
And if desired radiate to the reactive power compensator, then open the heat-sink unit.
Optional: described point of benefit module parameter includes compensation capacity, CT variation, hysteresis coefficient, investment upper voltage limit, investment
Lower voltage limit, overvoltage protection value, under-voltage protection value, instantaneous maximum switching capacity, compensation initial current and power factor upper limit value.
Optional: the module parameter of mending altogether includes under discharge time, hysteresis coefficient, investment upper voltage limit, investment voltage
Limit, overvoltage protection value, under-voltage protection value, instantaneous maximum switching capacity, compensation initial current and power factor upper limit value.
The invention has the following advantages: corresponding speed is fast, capacity is big, the service life is long, simple installation, man-machine interface friend
The remarkable advantages such as good, easy to operate maintenance.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of reactive power compensator of the invention；
Fig. 2 is the flow chart of reactive-load compensation method of the invention.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.It should be noted that for
The explanation of these embodiments is used to help understand the present invention, but and does not constitute a limitation of the invention.In addition, disclosed below
The each embodiment of the present invention involved in technical characteristic can be combined with each other as long as they do not conflict with each other.
Embodiment 1
A kind of reactive power compensator, as shown in Fig. 1, including cabinet body, compensating unit, man-machine interaction unit, control unit
And heat-sink unit, heat-sink unit are arranged on shell, compensating unit and control unit are arranged in shell, compensating unit, heat dissipation
Unit and man-machine interaction unit are separately connected control unit.
Specific compensating unit includes dividing complementary modulus block and altogether complementary modulus block, divides complementary modulus block output end and altogether complementary modulus block output end point
Not Lian Jie breaker, dividing complementary modulus block includes A phase compensation circuit, B phase compensation circuit and C phase compensation circuit, A phase compensation circuit, B phase
Compensation circuit and C phase compensation circuit respectively include fling-cut switch and point benefit capacitor group, A phase compensation circuit, B phase compensation circuit and
The Y-shaped connection of C phase compensation circuit, complementary modulus block includes the total benefit capacitor group and fling-cut switch of Δ type connection altogether.
Man-machine interaction unit includes tangible display screen, and tangible display screen is arranged at the top of cabinet body or cabinet body side.
Heat-sink unit includes the radiator fan of setting on the cabinet, and radiator fan is automatic by control unit when being more than threshold value
It opens in an embodiment of the present invention, above-mentioned threshold value is 40-55 DEG C, and preferred threshold value is 50 DEG C.
Control unit includes master control unit, A phase control unit, B phase control unit and C phase control unit, master control list
Member setting is between total complementary modulus block and protection circuit, and A phase control unit is set between A phase compensation circuit and protection circuit, and B is phased
Unit processed is set between B phase compensation circuit and protection circuit, and C phase control unit is set between C phase compensation circuit and protection circuit,
In addition, current transformer is additionally provided with before breaker, for the electric current of detection system, specifically, the A phase in breaker is defeated
Enter end, B phase input terminal and C phase input terminal and is respectively arranged with a current transformer.
Embodiment 2
A kind of reactive-load compensation method, comprising the following steps:
Step 1, the operating mode that reactive power compensator is arranged, operating mode include manual mode, automatic mode, shut down mould
Formula and emergency stop mode；
Manual mode is used to shut down by the way that capacitor switching, automatic mode is used for device automatic switching capacitor manually
Mode is for cutting off capacitor, and emergency stop mode is for cutting off so capacitor；
Step 2, the system parameter that reactive power compensator is arranged, system parameter include point benefit module parameter and complementary modulus block ginseng altogether
Number；
The operational temperature information of step 3, the real-time running state parameter for obtaining reactive power compensator and reactive power compensator；
Step 4 is based on running state parameter, judges whether reactive power compensator needs to compensate, and, it is based on operating temperature
Information judges whether to need to radiate to reactive power compensator；
If step 5, reactive power compensator need to compensate, controls compensating unit and carry out the compensation of automatic or manual switching, with
And if desired radiate to reactive power compensator, then open heat-sink unit.
Wherein, dividing benefit module parameter includes under compensation capacity, CT variation, hysteresis coefficient, investment upper voltage limit, investment voltage
Limit, overvoltage protection value, under-voltage protection value, instantaneous maximum switching capacity, compensation initial current and power factor (PF) (number) upper limit value.
Mending module parameter altogether includes discharge time, hysteresis coefficient, investment upper voltage limit, investment lower voltage limit, overvoltage protection
Value, under-voltage protection value, instantaneous maximum switching capacity, compensation initial current and power factor (PF) (number) upper limit value.
Concrete example illustrates the reactive-load compensation method of the present apparatus below:
Overvoltage protection:
Step 1, the operating mode that reactive power compensator is set, such as it is set as automatic module；
Step 2 is dividing complementary modulus block or altogether complementary modulus block setting over-voltage numerical value, for example overpressure value is arranged in A phase compensation circuit
For 265V, other parameters can according to need freely to be set by user, due to being to carry out overvoltage protection herein, so only enumerating
Pressure value；
The operating temperature of step 3, the real time execution voltage parameter for then obtaining reactive power compensator and reactive power compensator
Information, such as the real time execution voltage of reactive power compensator is 270V；
Step 4, judgement obtain reactive power compensator at this time and need to compensate,
Step 5 cuts off corresponding capacitor in the A phase compensation circuit put into automatically.
Overheat protector:
Step 1, the operating mode that reactive power compensator is set, such as it is set as automatic module；
Step 2 is dividing complementary modulus block or altogether complementary modulus block setting temperature protection value, for example temperature is arranged in A phase compensation circuit
Protection value is 55 DEG C, and other parameters can according to need freely to be set by user, due to being to carry out overvoltage protection herein, so only
Enumerate overpressure value；
Step 3, the operational temperature information for then obtaining reactive power compensator, such as the real-time working temperature of reactive power compensator
Degree is 60 DEG C,
Step 4, judgement obtain reactive power compensator at this time and need to compensate,
Step 5, the radiator fan for automatically turning on heat-sink unit carry out cooling processing to device.
In conjunction with attached drawing, the embodiments of the present invention are described in detail above, but the present invention is not limited to described implementations
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen in protection scope of the present invention.
Claims (10)
1. a kind of reactive power compensator, including cabinet body, it is characterised in that: further include compensating unit, man-machine interaction unit, control list
Member and heat-sink unit, on the housing, the compensating unit and described control unit are arranged in institute for the heat-sink unit setting
It states in shell, the compensating unit, the heat-sink unit and the man-machine interaction unit are separately connected described control unit,
The compensating unit includes dividing complementary modulus block and altogether complementary modulus block, described to divide complementary modulus block output end and the complementary modulus block output end altogether
It is separately connected protection circuit, it is described that complementary modulus block is divided to include A phase compensation circuit, B phase compensation circuit and C phase compensation circuit, the A phase
Compensation circuit, the B phase compensation circuit and the C phase compensation circuit respectively include fling-cut switch and point benefit capacitor group, the A
Phase compensation circuit, the B phase compensation circuit and the Y-shaped connection of C phase compensation circuit, the complementary modulus block altogether include the connection of Δ type
Total benefit capacitor group and fling-cut switch.
2. the apparatus according to claim 1, it is characterised in that: the man-machine interaction unit includes tangible display screen, institute
Tangible display screen is stated to be arranged at the top of cabinet body or cabinet body side.
3. the apparatus according to claim 1, it is characterised in that: the heat-sink unit includes that dissipating on the cabinet body is arranged in
Hot-air fan, the radiator fan are automatically turned on when being more than threshold value by control unit.
4. device according to claim 3, it is characterised in that: the threshold value is 40-55 DEG C.
5. the apparatus according to claim 1, it is characterised in that: the protection circuit includes breaker.
6. the apparatus according to claim 1, it is characterised in that: described control unit includes master control unit, A phase control list
Member, B phase control unit and C phase control unit, the master control unit setting the complementary modulus block altogether and the protection circuit it
Between, the A phase control unit is set between the A phase compensation circuit and the protection circuit, and the B phase control unit is set in institute
It states between B phase compensation circuit and the protection circuit, the C phase control unit is set in the C phase compensation circuit and the protection
Between circuit.
7. the apparatus according to claim 1, it is characterised in that: further include three current transformers, three electric currents are mutual
Sensor is separately positioned on A phase input terminal, B phase input terminal and the C phase input terminal of the protection circuit.
8. a kind of reactive-load compensation method, the method is applied to voltage monitor described in any one of claims 1-6, special
Sign is: the following steps are included:
Step 1, the operating mode that reactive power compensator is arranged, the operating mode include manual mode, automatic mode, shut down mould
Formula and emergency stop mode；
The manual mode is used for by the way that capacitor switching, the automatic mode is used for described device automatic switching capacitor manually
Device, the shutdown mode is for cutting off capacitor, and the emergency stop mode is for cutting off all capacitors；
Step 2, the system parameter that reactive power compensator is arranged, the system parameter include point benefit module parameter and complementary modulus block ginseng altogether
Number；
The operational temperature information of step 3, the real-time running state parameter for obtaining reactive power compensator and reactive power compensator；
Step 4 is based on the running state parameter, judges whether the reactive power compensator needs to compensate, and, based on described
Operational temperature information judges whether to need to radiate to the reactive power compensator；
If step 5, the reactive power compensator need to compensate, controls the compensating unit and carry out automatic switching compensation, and,
If desired it radiates to the reactive power compensator, then opens the heat-sink unit.
9. device according to claim 8, it is characterised in that: described point of benefit module parameter include compensation capacity, CT variation,
Hysteresis coefficient, investment lower voltage limit, overvoltage protection value, under-voltage protection value, instantaneous maximum switching capacity, is mended at investment upper voltage limit
Repay initial current and power factor upper limit value.
10. device according to claim 8, it is characterised in that: the module parameter of mending altogether includes discharge time, hysteresis system
Number, investment upper voltage limit, investment lower voltage limit, overvoltage protection value, under-voltage protection value, instantaneous maximum switching capacity, compensation starting
Electric current and power factor upper limit value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811089605.7A CN109066719A (en) | 2018-09-18 | 2018-09-18 | A kind of reactive power compensator and reactive-load compensation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811089605.7A CN109066719A (en) | 2018-09-18 | 2018-09-18 | A kind of reactive power compensator and reactive-load compensation method |
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| Publication Number | Publication Date |
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| CN109066719A true CN109066719A (en) | 2018-12-21 |
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| CN201811089605.7A Pending CN109066719A (en) | 2018-09-18 | 2018-09-18 | A kind of reactive power compensator and reactive-load compensation method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728832A (en) * | 2008-10-20 | 2010-06-09 | 乐山晟嘉电气有限公司 | Method for low-voltage phase-splitting reactive compensation of metallurgical electric furnace |
| CN201509085U (en) * | 2009-09-16 | 2010-06-16 | 北京国人正方科技有限公司 | Quick-throwing/cutting low-voltage intelligent reactive power compensating device |
| CN102983583A (en) * | 2012-12-22 | 2013-03-20 | 张家港保税区天翔电气有限公司 | Reactive capacitance compensation cabinet |
| CN103606933A (en) * | 2013-11-14 | 2014-02-26 | 天津市沃德电力设备有限公司 | Reactive capacitor compensation cabinet |
| CN104269860A (en) * | 2014-10-08 | 2015-01-07 | 国家电网公司 | Novel low-voltage reactive compensation device |
-
2018
- 2018-09-18 CN CN201811089605.7A patent/CN109066719A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728832A (en) * | 2008-10-20 | 2010-06-09 | 乐山晟嘉电气有限公司 | Method for low-voltage phase-splitting reactive compensation of metallurgical electric furnace |
| CN201509085U (en) * | 2009-09-16 | 2010-06-16 | 北京国人正方科技有限公司 | Quick-throwing/cutting low-voltage intelligent reactive power compensating device |
| CN102983583A (en) * | 2012-12-22 | 2013-03-20 | 张家港保税区天翔电气有限公司 | Reactive capacitance compensation cabinet |
| CN103606933A (en) * | 2013-11-14 | 2014-02-26 | 天津市沃德电力设备有限公司 | Reactive capacitor compensation cabinet |
| CN104269860A (en) * | 2014-10-08 | 2015-01-07 | 国家电网公司 | Novel low-voltage reactive compensation device |
Non-Patent Citations (1)
| Title |
|---|
| 陈玲: ""基于dsPIC的智能无功补偿装置研究"", 中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》, no. 1, 15 January 2015 (2015-01-15), pages 6 - 54 * |
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