CN103743982A - Method for measuring daily line loss of medium-voltage user equipment - Google Patents
Method for measuring daily line loss of medium-voltage user equipment Download PDFInfo
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- CN103743982A CN103743982A CN201410025875.7A CN201410025875A CN103743982A CN 103743982 A CN103743982 A CN 103743982A CN 201410025875 A CN201410025875 A CN 201410025875A CN 103743982 A CN103743982 A CN 103743982A
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Abstract
The invention discloses a method for measuring the daily line loss of medium-voltage user equipment; by the accurate medium-voltage user daily electric quantity, the precise numerical value of daily line loss of the medium-voltage user equipment is obtained. The method comprises the concrete steps: obtaining a standing book of a medium-voltage user ammeter; obtaining an intraday reading of the medium-voltage user ammeter from a usage and collection system; under normal circumstances, directly calculating to obtain a daily normal electric quantity of the medium-voltage user according to a electric quantity computational formula; considering specially for a special state of the ammeter; applying the obtained daily electric quantity of the medium-voltage user to line loss computation, so as to obtain the accurate daily line loss of the medium-voltage user equipment. According to the method, by the accurate daily electric quantity of the medium-voltage user, the precise numerical value of the daily line loss of the medium-voltage user equipment is obtained, and a powerful basis is provided for loss reduction analysis.
Description
Technical field
The invention belongs to field of power, relate to a kind of assay method of Middle Voltage equipment line loss every day.
Background technology
At present, because the billing cycle of Middle Voltage is different, be not each Middle Voltage by daily settlement, so Middle Voltage day electric weight cannot directly get.But Middle Voltage electricity consumption change is larger, therefore need to analyzes line loss according to Middle Voltage day electric weight, thereby find that in time the equipment loss of Middle Voltage is abnormal.In the line loss system providing in marketing, only provide the inquiry of Middle Voltage moon electric weight.If monthly electric weight carrys out statistical line losses, can cause can not finding that line loss is abnormal in one month, once certain equipment has occurred be found extremely and not in time and process, can cause very large energy loss.In the module of the checked line loss providing in scheduling, provide and take the day electric weight that impulse electric charge is basic forecast, can not provide accurately Middle Voltage day electric weight, therefore can as a reference, for line loss analyzing, there is no actual meaning.If obtained less than the electric weight of Middle Voltage day accurately, equipment line loss that just can not accurate Calculation Middle Voltage, provides foundation for falling to damage to analyze.
In order can operation technique means to be that wastage reducing and energy saving provides support, need to obtain the relevant electric quantity data of equipment line loss, statistics and analysis.For the equipment line loss analyzing of Middle Voltage, owing to not having system directly to provide Middle Voltage accurate day electric weight, the dimension of line loss analyzing and degree of accuracy are unsolved difficult problems always.
Summary of the invention
The assay method that the object of this invention is to provide a kind of Middle Voltage equipment line loss every day, the method can obtain the accurate numerical value of Middle Voltage equipment line loss every day by accurate Middle Voltage day electric weight, for falling to damage to analyze, provides strong foundation.
The object of the invention is to be achieved through the following technical solutions:
An assay method for Middle Voltage equipment line loss every day, is characterized in that: the method, by accurate Middle Voltage day electric weight, obtains the accurate numerical value of Middle Voltage equipment line loss every day, and concrete steps are as follows:
1) obtain Middle Voltage table meter machine account, comprising: table number, table multiplying power, CT no-load voltage ratio (current transformer ratio), PT no-load voltage ratio (voltage transformer (VT) no-load voltage ratio), show maximum registration, table status, the table truth of a matter, set-up time, circuit ID, total family number, production system user ID, user's name, user's electric pressure;
2), from obtain Middle Voltage table meter registration on the same day with extraction system, table is counted the meritorious registration of forward;
3) under normal circumstances, directly according to electric weight computing formula, calculate the corresponding normal electric weight of Middle Voltage every day:
Electric weight
normally=(the meritorious registration of forward the previous day of forward on the same day meritorious registration-Biao meter of table meter) * table multiplying power * CT no-load voltage ratio * PT no-load voltage ratio;
4) for the special state of table meter, consider:
(1) for table meter upset situation, the i.e. little situation of electricity ratio electric weight the previous day
Production system need to be obtained from marketing system the maximum variable (variable acquiring is generally 5.1 or 6.1 etc., wherein: the maximum variable of 5.1 expression table meter is that the maximum variable of 99999.9,6.1 expression table meter is 999999.9) of table meter; For the situation of table meter upset, the adjustment of electric weight computing formula is as follows:
Electric weight
upsetthe meritorious registration of=table meter forward on the same day+(the meritorious registration of table meter maximum forward meritorious variable-Biao meter forward the previous day) * table multiplying power * CT no-load voltage ratio * PT no-load voltage ratio;
(2) for table meter replacing situation
Transition information when marketing system is changed table meter is synchronized to production system, and in practical business, the new table meter truth of a matter after table meter is changed is not 0, needs the table truth of a matter of table meter to be synchronized to production system in synchronizing process; For table meter replacing situation, the adjustment of electric weight formula is as follows:
Electric weight
change=(the day forward active energy-Biao truth of a matter after the day forward active energy+replacing before replacing) * table multiplying power * CT no-load voltage ratio * PT no-load voltage ratio;
5) the Middle Voltage day electric weight obtaining is applied to, in line loss calculating, obtain accurate Middle Voltage equipment line loss every day;
Separated time line loss=[(outlet switch forward active energy-Middle Voltage forward active energy)/outlet switch forward active energy] * 100%.
The present invention, by accurate Middle Voltage day electric weight, obtains the accurate numerical value of Middle Voltage equipment line loss every day, according to Middle Voltage equipment line loss every day, can carry out the analysis of Middle Voltage unit exception, what discovering device occurred in time is abnormal, and can process in time, has guaranteed the normal operation of equipment.
Accompanying drawing explanation
Fig. 1 is the mensuration process flow diagram of Middle Voltage equipment line loss.
Embodiment
Below by a concrete example, concrete the present invention is described.
An assay method for Middle Voltage equipment line loss every day, the method, by accurate Middle Voltage day electric weight, obtains the accurate numerical value of Middle Voltage equipment line loss every day, and Fig. 1 is the mensuration process flow diagram of Middle Voltage equipment line loss.Concrete steps are as follows:
1, in production system and marketing system data scrubbing, obtain the account information of marketing table meter, table meter numbering: " K003205640 ", corresponding Middle Voltage is " bearing shop ", and table multiplying power is " 100/10 ", is saved as 10 during warehouse-in, CT no-load voltage ratio is " 500/5 ", during warehouse-in, saving as 100, PT no-load voltage ratio is " 100/20 ", saves as 5. during warehouse-in
2, from scheduling electric flux system, obtain the electric weight that table meter is numbered the outlet switch that " K003205640 " is corresponding: 10263kwh.
3, from obtaining with adopting the table meter registration on the same day (2013-04-08) that table meter is numbered " K003205640 ": a day forward active energy registration is 8492.7140 kwh, and by these data loadings.
4, the table quantity calculation of warehouse-in before inquiry, obtains table meter registration the previous day (2013-04-07) that table meter is numbered " K003205640 ": a day forward active energy registration is 8490.7650 kwh.
5,, by relatively finding, the same day, table meter registration was greater than the table meter registration of the previous day, belonged to normal condition, made power consumption
normallycomputing formula calculates Middle Voltage 2013-04-08 electric weight:
The meritorious day electric weight of forward: (8492.7140-8490.7650) * 10*100*5=9745 kwh
6, the day electric weight of Middle Voltage is applied to, in line loss calculating, obtain accurate Middle Voltage equipment line loss every day;
For example: separated time line loss per unit=[(outlet switch electric weight-Middle Voltage forward active energy)/outlet switch electric weight] * 100%=[(10263-9745)/1023] * 100%=5.3155%.
By analyzing Middle Voltage equipment line loss, whether have extremely, for wastage reducing and energy saving provides strong support.
Claims (1)
1. an assay method for Middle Voltage equipment line loss every day, is characterized in that: the method, by accurate Middle Voltage day electric weight, obtains the accurate numerical value of Middle Voltage equipment line loss every day, and concrete steps are as follows:
Obtain Middle Voltage table meter machine account, comprising: table number, table multiplying power, CT no-load voltage ratio, PT no-load voltage ratio, shows maximum registration, table status, the table truth of a matter, set-up time, circuit ID, total family number, production system user ID, user's name, user's electric pressure;
From obtain Middle Voltage table meter registration on the same day with extraction system, table is counted the meritorious registration of forward;
Under normal circumstances, directly according to electric weight computing formula, calculate the corresponding normal electric weight of Middle Voltage every day:
Electric weight
normally=(the meritorious registration of forward the previous day of forward on the same day meritorious registration-Biao meter of table meter) * table multiplying power * CT no-load voltage ratio * PT no-load voltage ratio;
Special state for table meter is considered:
(1) for table meter upset situation, the i.e. little situation of electricity ratio electric weight the previous day
Production system need to be obtained from marketing system the maximum variable of table meter; For the situation of table meter upset, the adjustment of electric weight computing formula is as follows:
Electric weight
upsetthe meritorious registration of=table meter forward on the same day+(the meritorious registration of table meter maximum forward meritorious variable-Biao meter forward the previous day) * table multiplying power * CT no-load voltage ratio * PT no-load voltage ratio;
(2) for table meter replacing situation
Transition information when marketing system is changed table meter is synchronized to production system, and in practical business, the new table meter truth of a matter after table meter is changed is not 0, needs the table truth of a matter of table meter to be synchronized to production system in synchronizing process; For table meter replacing situation, the adjustment of electric weight formula is as follows:
Electric weight
change=(the day forward active energy-Biao truth of a matter after the day forward active energy+replacing before replacing) * table multiplying power * CT no-load voltage ratio * PT no-load voltage ratio;
The Middle Voltage day electric weight obtaining is applied to, in line loss calculating, obtain accurate Middle Voltage equipment line loss every day;
Separated time line loss=[(outlet switch forward active energy-Middle Voltage forward active energy)/outlet switch forward active energy] * 100%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950440A (en) * | 2017-02-14 | 2017-07-14 | 国网新疆电力公司伊犁供电公司 | Transformer station's metering critical point quickly judges alarm method extremely |
| CN109191330A (en) * | 2018-09-25 | 2019-01-11 | 深圳供电局有限公司 | Line loss electricity calculates method, apparatus, computer equipment and storage medium |
| CN109541298A (en) * | 2018-11-29 | 2019-03-29 | 宁波三星智能电气有限公司 | A kind of electric energy meter metering method |
| CN109683059A (en) * | 2018-12-30 | 2019-04-26 | 国网北京市电力公司 | Determine method and device, the storage medium, processor of line loss exception |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950440A (en) * | 2017-02-14 | 2017-07-14 | 国网新疆电力公司伊犁供电公司 | Transformer station's metering critical point quickly judges alarm method extremely |
| CN106950440B (en) * | 2017-02-14 | 2019-08-13 | 国网新疆电力公司伊犁供电公司 | Substation's metering critical point is abnormal quickly to judge alarm method |
| CN109191330A (en) * | 2018-09-25 | 2019-01-11 | 深圳供电局有限公司 | Line loss electricity calculates method, apparatus, computer equipment and storage medium |
| CN109541298A (en) * | 2018-11-29 | 2019-03-29 | 宁波三星智能电气有限公司 | A kind of electric energy meter metering method |
| CN109541298B (en) * | 2018-11-29 | 2020-11-03 | 宁波三星智能电气有限公司 | Electric energy meter metering method |
| CN109683059A (en) * | 2018-12-30 | 2019-04-26 | 国网北京市电力公司 | Determine method and device, the storage medium, processor of line loss exception |
| CN109683059B (en) * | 2018-12-30 | 2021-06-22 | 国网北京市电力公司 | Method and device for determining line loss abnormity, storage medium and processor |
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Application publication date: 20140423 |