CN106300380A - A kind of system of selection of reactive-load compensation capacitor - Google Patents
A kind of system of selection of reactive-load compensation capacitor Download PDFInfo
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- CN106300380A CN106300380A CN201610750359.XA CN201610750359A CN106300380A CN 106300380 A CN106300380 A CN 106300380A CN 201610750359 A CN201610750359 A CN 201610750359A CN 106300380 A CN106300380 A CN 106300380A
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- capacitor
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- selection
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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
- H02J3/18—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
- H02J3/1871—Methods for planning installation of shunt reactive power 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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- Control Of Electrical Variables (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The system of selection of a kind of reactive-load compensation capacitor, it is characterised in that described method comprises the steps: to be numbered capacitor, records the capability value Q of each capacitori, and set use state A of each capacitori, come into operation Ai=1, do not come into operation Ai=0；The most tactic all capacitors are carried out permutation and combination according to use state, and to each combination sequentially column number；According to formula Q=∑ Ai*QiThe capacitor calculating each combination puts into capacity Qk；Calculate the reactive power Q needing to compensateneed；The capacitor of each combination is put into capacity QkWith the reactive power Q needing compensationneedCompare, obtain that combination immediate；Record the use state of all capacitors of this combination；The capacitor devoted oneself to work is needed according to the condition selecting that uses of each capacitor in combination；The method have the advantages that algorithm is simple, it is not easy to make mistakes.
Description
Technical field
The present invention relates to No-Work Power Compensation Capacity in Electricity System technical field, be particularly used for the choosing of reactive-load compensation capacitor
Selection method.
Background technology
The height of power factor has significant impact for power supply, the utilization ratio of electrical equipment in power system.Merit
Rate factor is high, and utilization ratio is the highest, and reactive power is low；Otherwise, power factor is low, and utilization ratio is the lowest, and reactive power is high.Idle
Power is that it the most externally does work for setting up and maintain the power in magnetic field in the electrical apparatus in power system, can reduce merit
Rate factor.Properly increase power factor, electrical network current supply loss can be reduced, improve the efficiency of power supply unit；Moreover, it is also possible to carry
The work efficiency of high user power utilization equipment, reduces the electric energy loss of user, plays energy-conserving action.Therefore, carry out reactive power to mend
Repay work, improve the power factor of electrical network, reduce the electric energy loss of electrical network, there is significant Social benefit and economic benefit.
At present, compensating power is carried out by configuring shnt capacitor (i.e. by change shnt capacitor capability value).So
And, the condenser capacity value in shnt capacitor has plurality of specifications, has the capacitor of 30kvar, also has the electric capacity of 10kvar
Device.First, calculate, by the power factor of load-side, active power, reactive power, the reactive power obtaining needing to compensate.According to
The suitable capacitor of reactive power reselection needing to compensate calculated is devoted oneself to work, existing capacitor selection algorithm ratio
More complicated, calculating process is easily made mistakes, and once calculates and makes mistakes, and easily causes the situation mending or owing to mend.
Summary of the invention
The technical problem to be solved is the situation for prior art, it is provided that a kind of algorithm is simple, be difficult to out
The system of selection of wrong reactive-load compensation capacitor.
The present invention solves the technical scheme that above-mentioned technical problem used: the selecting party of a kind of reactive-load compensation capacitor
Method, it is characterised in that described method comprises the steps:
S01, is numbered capacitor, records the capability value Q of each capacitori, and set the use of each capacitor
State Ai, use state is divided into and comes into operation and do not come into operation, and come into operation Ai=1, do not come into operation Ai=0；
The most tactic all capacitors are carried out permutation and combination according to use state by S02, and to each combination
Sequentially column number；
S03, according to formula Q=∑ Ai*QiThe capacitor calculating each combination puts into capacity Qk；
S04, calculates, by the power factor of load-side, active power, reactive power, the reactive power needing to compensate
Qneed；
S05, puts into capacity Q by the capacitor of each combinationkWith the reactive power Q needing compensationneedCompare, find
That close combination；
S06, records the use state of all capacitors of this combination；
S07, needs, according to the condition selecting that uses of each capacitor in combination, the capacitor devoted oneself to work.
Calculate for convenience, in described step S01, before capacitor is numbered, first capacitor is arranged from big to small
Sequence.
In described step S02, sequence number is corresponding with the binary value of the capacitor of this group use state.Carry out in this way
The speed of permutation and combination faster, does not haves mistake.
In described step S03, capacitor is put into capacity QkIt is ranked up.
Capacitor is carried out permutation and combination according to use state by the present invention, and the capacitor calculating each combination puts into capacity,
And compare with needing the reactive power compensated, find that combination the most close, according to the use condition selecting of this combination
Need the capacitor come into operation.
Accompanying drawing explanation
Fig. 1 is the FB(flow block) of the present invention；
Detailed description of the invention
In conjunction with accompanying drawing, the present invention is described in further detail.
As it is shown in figure 1, the system of selection of a kind of reactive-load compensation capacitor, specifically comprise the following steps that
S01, is numbered capacitor, records the capability value Q of each capacitori, and set the use of each capacitor
State Ai, (i=1,2 ..., n), use state is divided into and comes into operation and do not come into operation, and come into operation Ai=1, do not come into operation
Ai=0.After capacitor can being ranked up from big to small for convenience of calculation, then number.
The most tactic all capacitors are carried out permutation and combination according to use state by S02, obtain 2nIndividual group
Close, and to each combination sequentially column number, serial number k (k=0,1 ..., 2n-1).Each capacitor that is combined as uses state
Array { A1, A2... An}.Sequence number is corresponding with the binary value of the capacitor of this group use state；Such as, capacitor number is 4
Time individual, serial number 5, corresponding binary value is 0101.
S03, according to formula Q=∑ Ai*QiThe capacitor calculating each combination puts into capacity Qk(k=0,1 ..., 2n-
1), in order to search conveniently, capacitor is put into capacity QkArrange from small to large or from big to small.
S04, puts into capacity Q by the capacitor of each combinationkWith the reactive power Q needing compensationneedCompare, obtain
That close combination.
S05, records the use state of all capacitors of this combination.
S06, needs the capacitor devoted oneself to work, A according to the condition selecting that uses of each capacitance in combinationi=1 input makes
With, Ai=0 does not comes into operation.
The idle of needs compensation is calculated by the power factor of load-side, active power, reactive power before S04 step
Power Qneed。
Embodiment 1:
As a example by capacitor number n=4, Q1=40kvar, Q2=30kvar, Q3=20kvar, Q4=5kvar from greatly to
Minispread.
Use state to carry out permutation and combination according to difference in 4 capacitors, and the capacitor calculating each combination puts into
Capacity, such as following table.
Assume the reactive power Q needing to compensateneed=69, every group capacitor is put into capacity and QneedRelatively, find and 69
Immediate is the 12nd group, and the array of the 12nd group is that { 1,1,0,0}, corresponding use state is A1=1, A2=1, A3=0, A4
=0.Therefore No. 1 capacitor and No. 2 capacitor is selected to come into operation.
Embodiment 2:
As a example by capacitor number n=4, Q1=30kvar, Q2=20kvar, Q3=5kvar, Q4=40kvar.
Use state to carry out permutation and combination according to difference in 4 capacitors, and the capacitor calculating each combination puts into
Capacity, such as following table.
Assume the reactive power Q needing to compensateneed=69, every group capacitor is put into capacity and QneedRelatively, find and 69
Immediate is the 9th group, and the array of the 9th group is that { 1,0,0,1}, corresponding use state is A1=1, A2=0, A3=0, A4=
1.Therefore No. 1 capacitor and No. 4 capacitor is selected to come into operation.
The present invention carries out permutation and combination according to the use state of capacitor, and the capacitor calculating each combination puts into appearance
Amount, and compare with needing the reactive power compensated, find that combination the most close, select according to the input state of this combination
Select the capacitor needing to come into operation.
Claims (4)
1. the system of selection of a reactive-load compensation capacitor, it is characterised in that described method comprises the steps:
S01, is numbered capacitor, records the capability value Q of each capacitori, and set the use state of each capacitor
Ai, use state is divided into and comes into operation and do not come into operation, and come into operation Ai=1, do not come into operation Ai=0；
The most tactic all capacitors are carried out permutation and combination according to use state by S02, and to each combination sequentially
Column number；
S03, according to formula Q=∑ Ai*QiThe capacitor calculating each combination puts into capacity Qk；
S04, calculates, by the power factor of load-side, active power, reactive power, the reactive power Q needing to compensateneed；
S05, puts into capacity Q by the capacitor of each combinationkWith the reactive power Q needing compensationneedCompare, find closest
That combination；
S06, records the use state of all capacitors of this combination；
S07, needs, according to the condition selecting that uses of each capacitor in combination, the capacitor devoted oneself to work.
The system of selection of reactive-load compensation capacitor the most according to claim 1, it is characterised in that: in described step S01, electricity
Before container is numbered, first capacitor is ranked up from big to small.
The system of selection of reactive-load compensation capacitor the most according to claim 1, it is characterised in that: in described step S02, sequence
Number with the capacitor of this group use state binary value corresponding.
The system of selection of reactive-load compensation capacitor the most according to claim 1, it is characterised in that: in described step S04, right
Capacitor puts into capacity QkIt is ranked up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610750359.XA CN106300380B (en) | 2016-08-27 | 2016-08-27 | A kind of selection method of reactive-load compensation capacitor |
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| CN201610750359.XA CN106300380B (en) | 2016-08-27 | 2016-08-27 | A kind of selection method of reactive-load compensation capacitor |
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| CN106300380B CN106300380B (en) | 2019-04-19 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221939A (en) * | 2017-07-18 | 2017-09-29 | 江苏斯菲尔电气股份有限公司 | The control of reactive power compensating group network system and its capacity diffused integration compensation method |
| CN109361222A (en) * | 2018-09-14 | 2019-02-19 | 江苏斯菲尔电气股份有限公司 | Hybrid reactive compensation control system |
| CN112729497A (en) * | 2021-01-19 | 2021-04-30 | 湖北航鹏化学动力科技有限责任公司 | Efficient medicament weighing method and device |
| CN115980458A (en) * | 2023-03-21 | 2023-04-18 | 广东电网有限责任公司广州供电局 | Method, device, system, equipment and medium for detecting capacity of platform area capacitor |
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| CN103050980A (en) * | 2012-11-21 | 2013-04-17 | 杭州万禾电力科技有限公司 | Low-voltage capacitance compensating system and control method |
| CN104167743A (en) * | 2014-08-21 | 2014-11-26 | 巢湖市金辉自控设备有限公司 | Capacitance adjusting method for intelligent power capacitor |
| CN104578094A (en) * | 2014-12-22 | 2015-04-29 | 深圳市盛弘电气有限公司 | Capacitance switching method and device |
| CN105024383A (en) * | 2014-03-20 | 2015-11-04 | 深圳市科陆驱动技术有限公司 | Capacitor switching method in reactive compensation |
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2016
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Patent Citations (4)
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| CN103050980A (en) * | 2012-11-21 | 2013-04-17 | 杭州万禾电力科技有限公司 | Low-voltage capacitance compensating system and control method |
| CN105024383A (en) * | 2014-03-20 | 2015-11-04 | 深圳市科陆驱动技术有限公司 | Capacitor switching method in reactive compensation |
| CN104167743A (en) * | 2014-08-21 | 2014-11-26 | 巢湖市金辉自控设备有限公司 | Capacitance adjusting method for intelligent power capacitor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221939A (en) * | 2017-07-18 | 2017-09-29 | 江苏斯菲尔电气股份有限公司 | The control of reactive power compensating group network system and its capacity diffused integration compensation method |
| CN107221939B (en) * | 2017-07-18 | 2019-07-02 | 江苏斯菲尔电气股份有限公司 | The control of reactive power compensating group network system and its capacity diffused integration compensation method |
| CN109361222A (en) * | 2018-09-14 | 2019-02-19 | 江苏斯菲尔电气股份有限公司 | Hybrid reactive compensation control system |
| CN112729497A (en) * | 2021-01-19 | 2021-04-30 | 湖北航鹏化学动力科技有限责任公司 | Efficient medicament weighing method and device |
| CN115980458A (en) * | 2023-03-21 | 2023-04-18 | 广东电网有限责任公司广州供电局 | Method, device, system, equipment and medium for detecting capacity of platform area capacitor |
| CN115980458B (en) * | 2023-03-21 | 2023-08-25 | 广东电网有限责任公司广州供电局 | Method, device, system, equipment and medium for detecting capacity of capacitor in transformer area |
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Denomination of invention: A selection method of reactive power compensation capacitor Effective date of registration: 20220214 Granted publication date: 20190419 Pledgee: Agricultural Bank of China Limited Ningbo Yinzhou Branch Pledgor: Ningbo Sanxing Smart Electric Co.,Ltd. Registration number: Y2022330000213 |
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Date of cancellation: 20221201 Granted publication date: 20190419 Pledgee: Agricultural Bank of China Limited Ningbo Yinzhou Branch Pledgor: Ningbo Sanxing Smart Electric Co.,Ltd. Registration number: Y2022330000213 |
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