CN104300550A - 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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- CN104300550A CN104300550A CN201410482280.4A CN201410482280A CN104300550A CN 104300550 A CN104300550 A CN 104300550A CN 201410482280 A CN201410482280 A CN 201410482280A CN 104300550 A CN104300550 A CN 104300550A
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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
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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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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
The present invention, about a kind of low-pressure reactive compensation analytical method, refers to a kind of analytical method being applicable to the abnormal switching of low-voltage reactive power compensation capacitor of the association areas such as the energy-conservation and energy efficiency evaluation of the district's reactive power compensation of low-voltage distribution transformer platform, low-voltage network especially.
Background technology
At present, in low-voltage distribution transformer platform district reactive power compensator, effective switching of capacitor is most important.By gathering the three-phase voltage/electric current of reactive power compensator, calculate the information such as meritorious, idle, the control of reactive power compensating strategy preset according to device, the switching operation of control capacitor, to low-voltage distribution transformer platform, district carries out reactive power compensation.By analyzing reactive power compensator capacitor switching information, can the operation exception of Timeliness coverage reactive-load compensation capacitor, for the intelligent switching of reactive power compensator lays the foundation.
Along with the propelling that country " 12 " plans, power distribution network saving energy and decreasing loss has become a vital task of Utilities Electric Co..Low-pressure reactive compensation, as the energy-conservation a kind of important channel of power distribution network, is more and more subject to extensive use.For a large amount of reactive power compensators that power distribution network mesolow distribute-electricity transformer district is installed, how to judge the abnormal switching operation of its capacitor, directly have influence on the operating efficiency of reactive power compensator.Therefore, necessary foundation a kind ofly drops into the Optimization Mechanism of situation for reactive-load compensation capacitor.
Summary of the invention
In view of this, main purpose of the present invention is to provide one can analyze the abnormal switching reason of capacitor, and the analytical method of the abnormal switching of the low-voltage reactive power compensation capacitor improving reactive power compensator utilance.
For achieving the above object, the invention provides the analytical method of the abnormal switching of a kind of low-voltage reactive power compensation capacitor, the method comprises the steps:
Step one, image data, gather the voltage of reactive power compensator, electric current and calculate that gained is meritorious, idle data;
Step 2, set up criterion, set up reactive-load compensation capacitor abnormal switching reason logic criterion;
Step 3, Logic judgment, according to the image data of reactive power compensator, in conjunction with the logic criterion of the abnormal switching of capacitor, carried out sorting out by Logic judgment to the abnormal switching reason of reactive-load compensation capacitor and analyze, and proposing conductive suggestion.
Described logic criterion comprises: gather disappearance, idle deficiency, voltage out-of-limit, current anomaly, strategy fails.
The described disappearance that gathers refers to and fails to collect the data of equipment in the regulation moment;
Described idle deficiency refers to that distribution transforming reactive power is little, does not reach compensation capacitors minimal configuration compensation capacity;
Described voltage out-of-limit refer to due to voltage exceed controller setting limit value, cause capacitor to drop into;
Described current anomaly refers to that three-phase current is zero or occurs negative;
Described strategy fails is the voltage of finger device, electric current, the idle input requirement all meeting reactive-load compensation capacitor, and true capacitor does not but drop into.
Described step 3 specifically comprises:
First, read the image data of reactive power compensator, comprising: be voltage, electric current, meritorious, idle;
Secondly, formulate the abnormal switching logic criterion of capacitor, criterion comprises: gather disappearance, idle deficiency, voltage out-of-limit, current anomaly and strategy fails;
Finally, according to logic criterion, judge idle capacitor abnormal switching situation type, and according to criterion type selecting solution.
Judge that the abnormal switching situation type of idle capacitor and solution specifically comprise:
Judge whether data lack, if gather disappearance, the data number namely collecting equipment in the regulation moment is zero, and reason is communication signal problem or equipment fault;
If data do not lack, then carry out idle deficiency and judge, if idle deficiency, namely distribution transforming reactive power Q is less than compensation capacitors minimal configuration compensation capacity Q ';
If distribution transforming reactive power Q is greater than compensation capacitors minimal configuration compensation capacity Q ', then carry out voltage out-of-limit judgement, if voltage out-of-limit, namely voltage exceedes the limit value of controller setting, then reactive-load compensation capacitor does not drop into;
If voltage does not exceed the limit value of controller setting, then carry out current anomaly judgement, if current anomaly, namely three-phase current is zero or occurs negative; Three-phase current be zero reason be that equipment fault or Three-Phase Transformer load are zero; Electric current occurs that the reason of negative is that current transformer phase sequence connects instead;
If electric current does not exist exception, then carry out strategy fails judgement, if strategy fails, i.e. the voltage of device, electric current, the input strategy all meeting reactive-load compensation capacitor such as idle, true capacitor does not but drop into; Its reason is equipment fault, or reactive power compensator control model is manual.
Described image data comprise day statistics and day 96 point data, this 96 point data is 96 records every day, and the sampling period is 15 minutes.
The present invention is according to the sampled data that reactive power compensator send, the condition dropped into according to reactive-load compensation capacitor judges, according to judged result, sorted generalization is carried out to the abnormal switching situation of reactive-load compensation capacitor, and analyze for each type, propose conductive suggestion, utilance and the operating efficiency of reactive power compensator can be improved.
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of the analytical method of the abnormal switching of low-voltage reactive power compensation capacitor of the present invention;
Fig. 2 is the flow chart of the abnormal switching situation analysis of reactive-load compensation capacitor in the present invention.
Embodiment
For ease of having further understanding to method of the present invention and the effect that reaches, the existing preferred embodiment that develops simultaneously by reference to the accompanying drawings is described in detail as follows.
As shown in Figure 1, the analysis of the abnormal switching reason of reactive power compensator capacitor of the present invention judges that flow process comprises three steps: image data, set up criterion and Logic judgment.Details are as follows for concrete implementation:
1, image data
Gather the voltage (U) of reactive power compensator, electric current (I) and calculate the meritorious data such as (P), idle (P) of gained.Image data comprises day statistics and day 96 point data (sampling period is 15 minutes, every day 96 record).
2, criterion is set up
Set up reactive-load compensation capacitor abnormal switching reason logic criterion, this logic criterion content comprises: gather disappearance, idle deficiency, voltage out-of-limit, current anomaly, strategy fails.
Gather disappearance: refer to and fail to collect the data of reactive power compensator in the regulation moment, reason is communication signal problem or equipment fault.
Idle deficiency: refer to that distribution transforming reactive power is little, does not reach compensation capacitors minimal configuration compensation capacity.
Voltage out-of-limit: refer to due to voltage exceed controller setting limit value, cause capacitor to drop into.
Current anomaly: refer to that three-phase current is zero or occurs negative.Possible cause is equipment fault, and especially current transformer damage or phase sequence connect instead, or Three-Phase Transformer load is zero (this situation probability is lower).
Strategy fails: be the voltage of finger device, electric current, the input requirement all meeting reactive-load compensation capacitor such as idle, true capacitor does not but drop into.Possible cause equipment fault, or control model changes into manually.
Other: other situations apart from the above.
3, Logic judgment
According to the image data of reactive power compensator, in conjunction with the logic criterion of capacitor switching, sorted out the abnormal switching reason of reactive-load compensation capacitor by Logic judgment, Logic judgment flow process as shown in Figure 2.
First, read the image data of reactive power compensator, comprising: be voltage, electric current, meritorious, idle.Data type comprise day statistics and day 96 point data.
Secondly, formulate the abnormal switching logic criterion of capacitor, criterion comprises: gather disappearance, idle deficiency, voltage out-of-limit, current anomaly, strategy fails and other reasons.
Finally, according to logic criterion, judge the situation type of the abnormal switching of idle capacitor, and according to criterion type selecting solution; Criterion and solution as follows:
Judge whether data lack, if gather disappearance, the data number namely collecting this equipment in the regulation moment is zero (i.e. shortage of data), and reason may be communication signal problem or equipment fault.
If data do not lack, then carry out idle deficiency and judge, if idle deficiency, namely distribution transforming reactive power Q is little, does not reach compensation capacitors minimal configuration compensation capacity Q '.
If distribution transforming reactive power Q is greater than compensation capacitors minimal configuration compensation capacity Q ', then carry out voltage out-of-limit judgement, if voltage out-of-limit, namely voltage exceedes the limit value of controller setting, i.e. U>Ulimit, wherein U is phase voltage, and Ulimit is the distribution transforming secondary side phase voltage upper limit.Due to the constraints that voltage is the control of reactive power compensating strategy, therefore three-phase voltage to exceed in distribution transforming secondary side phase voltage reactive-load compensation capacitor in limited time and does not drop into.
If voltage does not exceed the limit value of control strategy, then carry out current anomaly judgement, if current anomaly: namely three-phase current (I) is zero or occurs negative.Three-phase current is zero possible cause is equipment fault, and especially current transformer damages, or Three-Phase Transformer load is zero; Electric current occurs that negative may be that current transformer phase sequence connects instead.
If electric current does not exist exception, then carry out strategy fails judgement, if strategy fails, i.e. the voltage of device, electric current, the input strategy all meeting reactive-load compensation capacitor such as idle, true capacitor does not but drop into.Possible cause equipment fault, or reactive power compensator control model is manual.Described input strategy refers to that reactive power compensator capacitor drops into the required condition met, and comprise collect idle and be greater than Capacitor banks minimal configuration capacity, electric current and voltage meets constraints (voltage, electric current are no more than the limit value of setting) simultaneously.
Other: other situations apart from the above.
The data such as the voltage that the present invention collects according to reactive power compensator, electric current and calculating gained are meritorious, idle, in conjunction with the control of reactive power compensating strategy, by the Rule of judgment set, carry out Logic judgment, each reason of the abnormal switching situation of reactive-load compensation capacitor is analyzed, and conductive suggestion is proposed, greatly can improve utilance and the operating efficiency of reactive power compensator.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (6)
1., for the analytical method of the abnormal switching of low-voltage reactive power compensation capacitor, it is characterized in that, the method comprises the steps:
Step one, image data, gather the voltage of reactive power compensator, electric current and calculate that gained is meritorious, idle data;
Step 2, set up criterion, set up reactive-load compensation capacitor abnormal switching reason logic criterion;
Step 3, Logic judgment, according to the image data of reactive power compensator, in conjunction with the logic criterion of the abnormal switching of capacitor, carried out sorting out by Logic judgment to the abnormal switching reason of reactive-load compensation capacitor and analyze, and proposing conductive suggestion.
2. the analytical method of low-voltage reactive power compensation capacitor exception as claimed in claim 1, it is characterized in that, described logic criterion comprises: gather disappearance, idle deficiency, voltage out-of-limit, current anomaly, strategy fails.
3. the analytical method of the abnormal switching of low-voltage reactive power compensation capacitor as claimed in claim 2, its feature
Be, the described disappearance that gathers refers to and fails to collect the data of equipment in the regulation moment;
Described idle deficiency refers to that distribution transforming reactive power is little, does not reach compensation capacitors minimal configuration compensation capacity;
Described voltage out-of-limit refer to due to voltage exceed controller setting limit value, cause capacitor to drop into;
Described current anomaly refers to that three-phase current is zero or occurs negative;
Described strategy fails is the voltage of finger device, electric current, the idle input requirement all meeting reactive-load compensation capacitor, and true capacitor does not but drop into.
4. the analytical method of the abnormal switching of low-voltage reactive power compensation capacitor as claimed in claim 1, it is characterized in that, described step 3 specifically comprises:
First, read the image data of reactive power compensator, comprising: be voltage, electric current, meritorious, idle;
Secondly, formulate the abnormal switching logic criterion of capacitor, criterion comprises: gather disappearance, idle deficiency, voltage out-of-limit, current anomaly and strategy fails;
Finally, according to logic criterion, judge idle capacitor abnormal switching situation type, and according to criterion type selecting solution.
5. the analytical method of the abnormal switching of low-voltage reactive power compensation capacitor as claimed in claim 4, is characterized in that, judges that the abnormal switching situation type of idle capacitor and solution specifically comprise:
Judge whether data lack, if gather disappearance, the data number namely collecting equipment in the regulation moment is zero, and reason is communication signal problem or equipment fault;
If data do not lack, then carry out idle deficiency and judge, if idle deficiency, namely distribution transforming reactive power Q is less than compensation capacitors minimal configuration compensation capacity Q ';
If distribution transforming reactive power Q is greater than compensation capacitors minimal configuration compensation capacity Q ', then carry out voltage out-of-limit judgement, if voltage out-of-limit, namely voltage exceedes the limit value of controller setting, then reactive-load compensation capacitor does not drop into;
If voltage does not exceed the limit value of controller setting, then carry out current anomaly judgement, if current anomaly, namely three-phase current is zero or occurs negative; Three-phase current be zero reason be that equipment fault or Three-Phase Transformer load are zero; Electric current occurs that the reason of negative is that current transformer phase sequence connects instead;
If electric current does not exist exception, then carry out strategy fails judgement, if strategy fails, i.e. the voltage of device, electric current, the input strategy all meeting reactive-load compensation capacitor such as idle, true capacitor does not but drop into; Its reason is equipment fault, or reactive power compensator control model is manual.
6. the analytical method of the abnormal switching of low-voltage reactive power compensation capacitor as claimed in claim 1, is characterized in that, described image data comprise day statistics and day 96 point data, this 96 point data is 96 records every day, and the sampling period is 15 minutes.
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| CN201410482280.4A CN104300550B (en) | 2014-09-19 | 2014-09-19 | Method for analyzing switching of low-voltage reactive power compensation capacitor |
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| CN201410482280.4A CN104300550B (en) | 2014-09-19 | 2014-09-19 | Method for analyzing switching of low-voltage reactive power compensation capacitor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112290557A (en) * | 2020-10-12 | 2021-01-29 | 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 |
| CN113098024A (en) * | 2020-01-08 | 2021-07-09 | 施耐德电气美国股份有限公司 | Capacitor system, method of operating a system and power factor correction circuit |
| CN114156901A (en) * | 2021-11-25 | 2022-03-08 | 国网福建省电力有限公司莆田供电公司 | Method for detecting state abnormity of low-voltage distribution transformer reactive power compensation device |
| CN114840803A (en) * | 2022-06-10 | 2022-08-02 | 福州大学 | Calculation method for switching qualification rate of reactive compensation equipment |
| CN114840803B (en) * | 2022-06-10 | 2024-07-02 | 福州大学 | Calculation method for switching qualification rate of reactive power compensation equipment |
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| JPH09327122A (en) * | 1996-06-04 | 1997-12-16 | Nissin Electric Co Ltd | Detection apparatus for abnormality of capacitor in capacitor installation |
| 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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Patent Citations (2)
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|---|---|---|---|---|
| JPH09327122A (en) * | 1996-06-04 | 1997-12-16 | Nissin Electric Co Ltd | Detection apparatus for abnormality of capacitor in capacitor installation |
| 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 |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113098024A (en) * | 2020-01-08 | 2021-07-09 | 施耐德电气美国股份有限公司 | Capacitor system, method of operating a system and power factor correction circuit |
| CN112290557A (en) * | 2020-10-12 | 2021-01-29 | 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 |
| 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 |
| CN114156901A (en) * | 2021-11-25 | 2022-03-08 | 国网福建省电力有限公司莆田供电公司 | Method for detecting state abnormity of low-voltage distribution transformer reactive power compensation device |
| 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 |
| CN114840803A (en) * | 2022-06-10 | 2022-08-02 | 福州大学 | Calculation method for switching qualification rate of reactive compensation equipment |
| CN114840803B (en) * | 2022-06-10 | 2024-07-02 | 福州大学 | Calculation method for switching qualification rate of reactive power compensation equipment |
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