CN104300550B - Method for analyzing switching of low-voltage reactive power compensation capacitor - Google Patents
Method for analyzing switching of low-voltage reactive power compensation capacitor Download PDFInfo
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- CN104300550B CN104300550B CN201410482280.4A CN201410482280A CN104300550B CN 104300550 B CN104300550 B CN 104300550B CN 201410482280 A CN201410482280 A CN 201410482280A CN 104300550 B CN104300550 B CN 104300550B
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- 239000003990 capacitor Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000004458 analytical method Methods 0.000 claims description 12
- 230000008034 disappearance Effects 0.000 claims description 11
- 230000001131 transforming effect Effects 0.000 claims description 10
- 230000007812 deficiency Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 4
- 238000000819 phase cycle Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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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
Abstract
The invention discloses a method for analyzing the abnormal switching of a low-voltage reactive power compensation capacitor. The method includes the following steps of (1) collecting data, wherein the voltage and the current are collected through a reactive power compensation device and the active power data and reactive power data are calculated, (2) building a criterion, wherein the logical criterion of the abnormal switching of the reactive power compensation capacitor is built, (3) conducting logical judgment, wherein the reasons for the abnormal switching of the reactive power compensation capacitor are clarified and analyzed through logical judgment according to the data collected by the reactive power compensation in combination with the logical criterion of the abnormal switching of the capacitor, and reasonable proposals are proposed.
Description
Technical field
A kind of relevant low-pressure reactive compensation analysis method of the present invention, particularly relates to a kind of idle suitable for low-voltage distribution transformer platform district
The analysis side of the low-voltage reactive power compensation capacitor exception switching of the association areas such as compensation, low-voltage network energy-conservation and energy efficiency evaluation
Method.
Background technology
At present, in low-voltage distribution transformer platform district reactive power compensator, effective switching of capacitor is most important.By gathering nothing
Three-phase voltage/the electric current of Reactive power compensation installations, calculates the information such as active, idle, according to the preset the control of reactive power compensating strategy of device,
The switching operation of control capacitor, to low-voltage distribution transformer platform district reactive-load compensation is carried out.By to reactive power compensator capacitor switching
Information is analyzed, and can in time find the operation exception of reactive-load compensation capacitor, is the intelligent switching of reactive power compensator
Lay the foundation.
With the propulsion of national " 12 " planning, power distribution network saving energy and decreasing loss has become important of Utilities Electric Co.
Business.Low-pressure reactive compensation is more and more extensively applied as a kind of important channel of power distribution network energy-conservation.For low in power distribution network
How a large amount of reactive power compensators that pressure distribute-electricity transformer district is installed, judge the abnormal switching operation of its capacitor, directly influences nothing
The operating efficiency of Reactive power compensation installations.Therefore, it is necessary to set up a kind of optimization machine that situation is put into for reactive-load compensation capacitor
System.
The content of the invention
In view of this, present invention is primarily targeted at providing one kind can analyze capacitor exception switching reason, and improve
The analysis method of the low-voltage reactive power compensation capacitor exception switching of reactive power compensator utilization rate.
To reach above-mentioned purpose, the present invention provides a kind of analysis method of low-voltage reactive power compensation capacitor exception switching, should
Method comprises the steps：
Step one, gathered data, gather voltage, electric current and active, the idle data of calculating gained of reactive power compensator；
Step 2, criterion is set up, set up reactive-load compensation capacitor exception switching reason logic criterion；
Step 3, logic judgment, according to the gathered data of reactive power compensator, sentence with reference to the logic of capacitor exception switching
According to, by logic judgment reactive-load compensation capacitor exception switching reason is sorted out and analyzed, and propose conductive suggestion.
The logic criterion includes：Gather disappearance, idle deficiency, voltage out-of-limit, current anomaly, strategy fails.
The gather disappearance refers to and fails to collect the data of equipment at the regulation moment；
The idle deficiency refers to that distribution transforming reactive power is little, does not reach the compensation of reactive-load compensation capacitor group minimal configuration and holds
Amount；
The voltage out-of-limit refer to due to voltage exceed controller setting limit value, cause capacitor to put into；
The current anomaly refers to that three-phase current is zero or negative occurs；
The strategy fails refer to voltage, electric current, the idle input requirement for being satisfied by reactive-load compensation capacitor of device, real
Border capacitor does not but put into.
The step 3 is specifically included：
First, the gathered data of reactive power compensator is read, including：It is voltage, electric current, active, idle；
Secondly, capacitor exception switching reason logic criterion is formulated, criterion includes：Gather disappearance, idle not enough, voltage are got over
Limit, current anomaly and strategy fails；
Finally, according to logic criterion, idle capacitor exception switching situation type is judged, and according to criterion type selecting solution
Certainly scheme.
Judge that idle capacitor exception switching situation type and solution are specifically included：
Judge whether data lack, if gather disappearance, i.e., it is zero to collect the data strip number of equipment at the regulation moment, reason
It is communication signal problem or equipment fault；
If data are not lacked, idle not enough judgement is carried out, if idle deficiency, i.e., distribution transforming reactive power Q is less than idle benefit
Repay capacitor bank minimal configuration compensation capacity Q '；
If distribution transforming reactive power Q is more than reactive-load compensation capacitor group minimal configuration compensation capacity Q ', voltage out-of-limit is carried out
Judge, if voltage out-of-limit, i.e., voltage exceedes the limit value of controller setting, then reactive-load compensation capacitor does not put into；
If voltage carries out current anomaly judgement not less than the limit value that controller sets, if current anomaly, i.e. three-phase current
It is zero or negative occurs；The reason for three-phase current is zero is that equipment fault or Three-Phase Transformer load are zero；Electric current occurs
The reason for negative is that current transformer phase sequence is reversed；
If electric current does not have exception, strategy fails judgement is carried out, if strategy fails, i.e. the voltage of device, electric current, idle
Etc. the input strategy for being satisfied by reactive-load compensation capacitor, true capacitor does not but put into；Its reason is reactive power compensator failure,
Or reactive power compensator control model is manual.
The gathered data includes day statistics and the point data of day 96, day 96 point data be daily 96 and record, adopt
The sample cycle is 15 minutes.
The present invention is carried out according to the sampled data sent on reactive power compensator, the condition put into according to reactive-load compensation capacitor
Judge, sorted generalization is carried out to reactive-load compensation capacitor exception switching situation according to judged result, and enter for each type
Row analysis, proposes conductive suggestion, can improve the utilization rate and operating efficiency of reactive power compensator.
Description of the drawings
The step of Fig. 1 is the analysis method of low-voltage reactive power compensation capacitor exception switching of the present invention flow chart；
Fig. 2 is the flow chart of reactive-load compensation capacitor exception switching situation analysis in the present invention.
Specific embodiment
For ease of there is further understanding to the method for the present invention and the effect for reaching, develop simultaneously in conjunction with accompanying drawing and preferably implement
Example describes in detail as follows.
As shown in figure 1, the analysis of reactive power compensator capacitor exception switching reason of the present invention judges that flow process includes three
Step：Gathered data, set up criterion and logic judgment.Details are as follows for concrete implementation mode：
1st, gathered data
Gather voltage (U), electric current (I) and the data such as calculating gained active (P), idle (P) of reactive power compensator.Adopt
Collection data include day statistics and the point data of day 96 (sampling period is 15 minutes, daily 96 records).
2nd, criterion is set up
Reactive-load compensation capacitor exception switching reason logic criterion is set up, the logic criterion content includes：Gather disappearance, nothing
Work(deficiency, voltage out-of-limit, current anomaly, strategy fails.
Gather disappearance：Refer to and fail to collect the data of reactive power compensator at the regulation moment, reason is communication signal
Problem or equipment fault.
Idle deficiency：Refer to that distribution transforming reactive power is little, do not reach reactive-load compensation capacitor group minimal configuration compensation capacity.
Voltage out-of-limit：Refer to because voltage exceedes the limit value of controller setting, cause capacitor to put into.
Current anomaly：Refer to that three-phase current is zero or negative occurs.Possible cause is equipment fault, and especially electric current is mutual
Sensor is damaged or phase sequence is reversed, or Three-Phase Transformer load is zero (such case probability is relatively low).
Strategy fails：Refer to that the voltage of device, electric current, idle etc. are satisfied by the input of reactive-load compensation capacitor and require, it is real
Border capacitor does not but put into.Possible cause reactive power compensator failure, or control model is changed to manually.
Other：Other situations apart from the above.
3rd, logic judgment
According to the gathered data of reactive power compensator, with reference to the logic criterion of capacitor switching, by logic judgment to nothing
Work(compensation capacitor exception switching reason is sorted out, and logic judgment flow process is as shown in Figure 2.
First, the gathered data of reactive power compensator is read, including：It is voltage, electric current, active, idle.Data type includes
Day statistics and the point data of day 96.
Secondly, capacitor exception switching reason logic criterion is formulated, criterion includes：Gather disappearance, idle not enough, voltage are got over
Limit, current anomaly, strategy fails and other reasonses.
Finally, according to logic criterion, the situation type of idle capacitor exception switching is judged, and according to criterion type selecting
Solution；Criterion and its solution are as follows：
Judge whether data lack, if gather disappearance, i.e., the data strip number for collecting the equipment at the regulation moment is zero (i.e.
Shortage of data), reason is probably communication signal problem or equipment fault.
If data are not lacked, idle not enough judgement is carried out, if idle deficiency, i.e. distribution transforming reactive power Q is little, does not reach nothing
Work(compensation capacitor group minimal configuration compensation capacity Q '.
If distribution transforming reactive power Q is more than reactive-load compensation capacitor group minimal configuration compensation capacity Q ', voltage out-of-limit is carried out
Judge, if voltage out-of-limit, i.e., voltage exceedes the limit value of controller setting, i.e. U>Ulimit, wherein U are phase voltage, and Ulimit is
The distribution transforming secondary side phase voltage upper limit.Due to voltage for the control of reactive power compensating strategy constraints, therefore three-phase voltage exceed match somebody with somebody
Reactive-load compensation capacitor does not put into when becoming the secondary side phase voltage upper limit.
If voltage carries out current anomaly judgement not less than the limit value of control strategy, if current anomaly：That is three-phase current
(I) it is zero or negative occur.It is equipment fault that three-phase current is zero possible cause, and especially current transformer is damaged, or
It is that Three-Phase Transformer load is zero；It is probably that current transformer phase sequence is reversed that negative occurs in electric current.
If electric current does not have exception, strategy fails judgement is carried out, if strategy fails, i.e. the voltage of device, electric current, idle
Etc. the input strategy for being satisfied by reactive-load compensation capacitor, true capacitor does not but put into.Possible cause reactive power compensator failure,
Or reactive power compensator control model is manual.The input strategy is referred to and met needed for reactive power compensator capacitor input
Condition, it is idle more than capacitor bank minimal configuration capacity including what is collected, while voltage x current meet the constraint condition (electricity
The limit value of pressure, electric current less than setting).
Other：Other situations apart from the above.
The data such as active, idle, knot obtained by voltage, electric current and the calculating that the present invention is collected according to reactive power compensator
The control of reactive power compensating strategy is closed, by the Rule of judgment for setting, logic judgment is carried out, to reactive-load compensation capacitor exception switching
Each reason of situation is analyzed, and proposes conductive suggestion, can greatly improve the utilization rate of reactive power compensator with
Operating efficiency.
The above, only presently preferred embodiments of the present invention is not intended to limit protection scope of the present invention.
Claims (3)
1. for the analysis method of low-voltage reactive power compensation capacitor exception switching, it is characterised in that the method comprises the steps：
Step one, gathered data, gather voltage, electric current and active, the idle data of calculating gained of reactive power compensator；
Step 2, criterion is set up, set up reactive-load compensation capacitor exception switching reason logic criterion；
Step 3, logic judgment, according to the gathered data of reactive power compensator, sentence with reference to the logic of capacitor exception switching reason
According to, by logic judgment reactive-load compensation capacitor exception switching reason is sorted out and analyzed, and propose conductive suggestion；
The step 3 is specifically included：
First, the gathered data of reactive power compensator is read, including：Active, idle number obtained by voltage, electric current and calculating
According to；
Secondly, capacitor exception switching reason logic criterion is formulated, logic criterion includes：Gather disappearance, idle not enough, voltage are got over
Limit, current anomaly and strategy fails；
Finally, according to logic criterion, reactive-load compensation capacitor exception switching reason situation type is judged, and according to logic criterion class
Type selects solution；
The judgement reactive-load compensation capacitor exception switching reason situation type and solution are specifically included：
Judge whether data lack, if gather disappearance, i.e., it is zero to collect the data strip number of reactive power compensator at the regulation moment,
Reason is communication signal problem or equipment fault；
If data are not lacked, idle not enough judgement is carried out, if idle deficiency, i.e., distribution transforming reactive power Q is less than reactive-load compensation electricity
Container group minimal configuration compensation capacity Q '；
If distribution transforming reactive power Q is more than reactive-load compensation capacitor group minimal configuration compensation capacity Q ', voltage out-of-limit judgement is carried out,
If voltage out-of-limit, i.e., voltage exceedes the limit value of controller setting, then reactive-load compensation capacitor does not put into；
If voltage carries out current anomaly judgement not less than the limit value that controller sets, if current anomaly, i.e., three-phase current is zero
Or there is negative；The reason for three-phase current is zero is that equipment fault or Three-Phase Transformer load are zero；There is negative in electric current
The reason for be that current transformer phase sequence is reversed；
If electric current does not have exception, carry out strategy fails judgement, if strategy fails, i.e., the voltage of reactive power compensator, electric current,
The idle input strategy for being satisfied by reactive-load compensation capacitor, true capacitor does not but put into；Its reason is reactive power compensator event
Barrier, or reactive power compensator control model is manual.
2. as claimed in claim 1 for the analysis method of low-voltage reactive power compensation capacitor exception switching, it is characterised in that
The gather disappearance refers to and fails to collect the data of reactive power compensator at the regulation moment；
The idle deficiency refers to that distribution transforming reactive power is little, does not reach reactive-load compensation capacitor group minimal configuration compensation capacity；
The voltage out-of-limit refer to due to voltage exceed controller setting limit value, cause capacitor to put into；
The current anomaly refers to that three-phase current is zero or negative occurs；
The strategy fails refer to that the voltage of reactive power compensator, electric current, the idle input for being satisfied by reactive-load compensation capacitor will
Ask, true capacitor does not but put into.
3. as claimed in claim 1 for the analysis method of low-voltage reactive power compensation capacitor exception switching, it is characterised in that institute
Gathered data is stated including day statistics and the point data of day 96, day 96 point data be daily 96 and record that the sampling period is 15
Minute.
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| CN109802400A (en) * | 2019-01-29 | 2019-05-24 | 宁波大家小家网络科技有限公司 | A kind of method and system of the data analysis and process of low-pressure reactive compensation system |
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| US11600989B2 (en) * | 2020-01-08 | 2023-03-07 | Schneider Electric USA, Inc. | Smart capacitor |
| CN112290557B (en) * | 2020-10-12 | 2022-08-12 | 宁波大家小家网络科技有限公司 | Switching type reactive compensation control device and method based on digital link |
| CN112965328A (en) * | 2021-02-03 | 2021-06-15 | 麦克赛尔数字映像（中国）有限公司 | Automatic picture repairing method and device for projector with partial light source failure |
| CN114156901B (en) * | 2021-11-25 | 2024-04-19 | 国网福建省电力有限公司莆田供电公司 | State abnormality detection method for low-voltage distribution transformer reactive power compensation device |
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| CN102969727A (en) * | 2012-12-13 | 2013-03-13 | 武汉东为科技有限公司 | Low-voltage reactive compensation control device and fault self-diagnosis method |
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| JP3331867B2 (en) * | 1996-06-04 | 2002-10-07 | 日新電機株式会社 | Capacitor abnormality detection device in capacitor equipment |
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| CN102969727A (en) * | 2012-12-13 | 2013-03-13 | 武汉东为科技有限公司 | Low-voltage reactive compensation control device and fault self-diagnosis method |
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| CN109802400A (en) * | 2019-01-29 | 2019-05-24 | 宁波大家小家网络科技有限公司 | A kind of method and system of the data analysis and process of low-pressure reactive compensation system |
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