CN104407189A - Electricity stealing prevention system and method for distribution transformer - Google Patents
Electricity stealing prevention system and method for distribution transformer Download PDFInfo
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- CN104407189A CN104407189A CN201410716040.6A CN201410716040A CN104407189A CN 104407189 A CN104407189 A CN 104407189A CN 201410716040 A CN201410716040 A CN 201410716040A CN 104407189 A CN104407189 A CN 104407189A
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Abstract
The invention discloses an electricity stealing prevention system for a distribution transformer. The system comprises a data acquisition module used for acquiring high-voltage-side voltage and current information, low-voltage-side voltage and current information and user electricity load of the distribution transformer in real time, a data transmission module used for transmitting data acquired by the data acquisition module to a control center of a power distribution department, and a data processing module used for processing the data transmitted by the data transmission module. The whole system is good in operability. The invention further discloses an electricity stealing prevention method for the distribution transformer; the method comprises the following steps: comparing the theoretical loss percent of the distribution transformer of a user with actual loss percent to judge whether electricity is stolen by the user or not, and storing starting and ending time of electricity stealing by the user and electricity load information in a data storage unit. The problem of difficulty in verification of electricity stealing by the user is solved and the method has the advantages of high practicality and accuracy.
Description
Technical field
The present invention relates to the Prevention Stealing Electricity Technology field of power supply department, particularly relate to a kind of electricity anti-stealing system for substation transformer and method of opposing electricity-stealing.
Background technology
Supplying in electrical domain, because the property right of the power distribution station of establishing for power consumer belongs to user, so the installation site of the substation transformer of its construction and correspondence is generally selected by user oneself, like this, power consumer is being produced, is being processed in the process of electricity consumption, consider that the position set by power distribution station is favourable compared with oneself, just can buy electricity filching device, implement comparatively hidden electricity filching behavior.User is once implement stealing, and power supply enterprise is difficult to process in time: one, and the position of electricity filching device installation is comparatively hidden not easily to be found; Its two, the stealing mode of user is very hidden, and as user adopts distance-type stealing, its electrical burglary is installed in measuring apparatus, and meticulous camouflage has been done on surface, and it is very difficult for investigating from the change of measuring apparatus; Its three, it is more difficult to investigate, and to the time stopped from stealing, is difficult to realize accurate calculating, often because the calculating of electricity, not by customer's approval, both sides is in all the time among deliberations tired out argue.In a word, user's stealing can cause larger loss to power supply enterprise, how to reduce, even avoids this loss, very urgent for power supply enterprise.
Summary of the invention
The object of this invention is to provide a kind of electricity anti-stealing system for substation transformer and method of opposing electricity-stealing, can in real time the power load of the voltage of substation transformer input end and output terminal, current information and user be gathered and be analyzed, for user, whether stealing provides reliable basis for estimation, thus effectively avoids power supply enterprise to cause damage because of user's stealing.
The present invention adopts following technical proposals:
A kind of electricity anti-stealing system for substation transformer, comprise data acquisition module, data transmitting module and data processing module, described data acquisition module comprises and is arranged on the on high-tension side electric energy metrical unit of substation transformer, high side voltage mutual inductor, current transformer and high side voltage current measurement chip and be arranged on the low-pressure side voltage transformer (VT) of substation transformer low-pressure side, current transformer and low-pressure side voltage and current measurement chip, described electric energy metrical unit, described high side voltage current measurement chip is connected with the data transmitter in described data transmitting module respectively with the output terminal of described low-pressure side voltage and current measurement chip, described data transmitting module comprises data transmitter and data sink, and data transmitter communicates with data sink and mates, the input end of the output terminal connection data processing module of data sink, described data processing module comprises CPU (central processing unit) and data storage cell, and CPU (central processing unit) is connected with data storage cell, the output terminal of the input end connection data receiver of CPU (central processing unit).
Described temperature survey chip and/or voltage and current measurement chip adopt cs5464 chip.
For a method of opposing electricity-stealing for substation transformer, comprise the following steps:
(1) substation transformer that power supply department is special to users all in distribution region carries out Unified coding, and is entered in the data storage cell of power supply department by the capacity information of the station address information corresponding to each coding, substation transformer and the gross data of copper, iron loss and open circuit loss and short circuit loss;
(2) metering method of massive quantity power supply and measurement is adopted, the power load of real time measure user, and send metrical information to CPU (central processing unit), meanwhile, high side voltage current measurement chip and low-pressure side voltage and current measurement chip, by the voltage and current information collected and the coding distributing to substation transformer, also send CPU (central processing unit) to;
(3) substation transformer of acquisition coding first mates with user by CPU (central processing unit), call the capacity information of the substation transformer corresponding to this user and the gross data of copper, iron loss and open circuit loss and short circuit loss again, and in conjunction with the user power utilization load of current acquisition, draw the substation transformer power attenuation number percent in theory of this user
, meanwhile, then according to the high side voltage of current acquisition, current information and low-pressure side voltage, current information, draw the substation transformer power attenuation number percent in practice of this user
;
(4) CPU (central processing unit) is by theoretic for substation transformer power attenuation number percent
with the power attenuation number percent of reality
contrast, if
, then show that this user power utilization is normal; If
>
, then enter step (5),
represent the input of substation transformer, export coefficient of balance, relevant with the distribution transformer capacity of user;
(5) CPU (central processing unit) finds that the substation transformer of this user is in
>
state time, then can auto-alarming mark the user as stealing suspicion family, meanwhile, the power load of this user and occur that the temporal information of alarm will be recorded and preserve in the data store, and automatically upgrading once at interval of a period of time; If the substation transformer of this user returns to after certain interval of time
state, then the data recorded because there is stealing suspicion before for this user in data storage cell will be automatically cleared, otherwise enter step (6);
(6) after certain interval of time, the substation transformer of this user is still in
>
state, then show that this user exists electricity filching behavior really, now, CPU (central processing unit) directly will be labeled as stealing user this user, simultaneously data storage cell will record and preserve the power load of user, stealing starts and termination time data message, using the evidence as user's stealing.
The present invention adopts the inputs of voltage transformer (VT), current transformer, electric energy metrical unit and voltage and current measurement chip Real-time Collection substation transformer, the voltage and current information of output terminal and the power load of user, and after central processing unit for processing, judge whether user implements stealing, save the time of hand inspection, refer to work efficiency; Adopt data storage cell to store the beginning of user stealing and termination time and power load information, solve the problem that user's stealing verification is difficult, thus avoid the loss that power supply enterprise causes because of user's stealing; In addition, every four hours of the information that data storage cell stores upgrades once, thus avoids electricity to calculate less, miscalculates and the situation of omission, provides safeguard for power supply enterprise retrieves the loss of supply.
Accompanying drawing explanation
Fig. 1 is the theory diagram of electricity anti-stealing system of the present invention;
Fig. 2 is that the present invention opposes electricity-stealing the process flow diagram of method.
Embodiment
As shown in Figure 1, the present invention includes data acquisition module, data transmitting module and data processing module, described data acquisition module comprises and is arranged on the on high-tension side electric energy metrical unit of substation transformer, high side voltage mutual inductor, current transformer and high side voltage current measurement chip and be arranged on the low-pressure side voltage transformer (VT) of substation transformer low-pressure side, current transformer and low-pressure side voltage and current measurement chip, the primary side of described high side voltage mutual inductor summation current transformer connects the on high-tension side voltage and current collection terminal of substation transformer, secondary side all connects the input end of electric energy metrical unit and high side voltage current measurement chip, the first input end of described electric energy metrical unit output terminal connection data transmitter, second input end of the output terminal connection data transmitter of described high side voltage current measurement chip, the primary side of described low-pressure side voltage transformer (VT) summation current transformer connects the voltage and current collection terminal of substation transformer low-pressure side, secondary side all connects the input end of low-pressure side voltage and current measurement chip, the 3rd input end of the output terminal connection data transmitter of described low-pressure side voltage and current measurement chip, described data transmitting module comprises data transmitter and data sink, data transmitter communicates with data sink and mates, specifically can adopt the transmission technologys such as GPRS wireless network, ZigBee wireless network and power carrier, the input end of the output terminal connection data processing module of data sink, described data processing module comprises CPU (central processing unit) and data storage cell, and CPU (central processing unit) is connected with data storage cell, the output terminal of the input end connection data receiver of CPU (central processing unit).In addition, described temperature survey chip and/or voltage and current measurement chip adopt cs5464 chip, this chip internal has the circuit such as integrated analog to digital conversion, the simulating signal that voltage transformer (VT) summation current transformer can be gathered, convert corresponding digital signal to, to carry out data transmission, the inner register that there is storage allocation and encode to substation transformer simultaneously.
Principle of work of the present invention: the metering method adopting massive quantity power supply and measurement, the power load of real time measure user, and send metrical information to CPU (central processing unit), meanwhile, high side voltage current measurement chip and low-pressure side voltage and current measurement chip are by the voltage and current information collected and the coding distributing to substation transformer, also CPU (central processing unit) is sent to, process through the information of CPU (central processing unit) in conjunction with current real-time data and the prior typing of data storage cell, to judge whether user implements stealing.
Utilize electricity anti-stealing system of the present invention to realize opposing electricity-stealing method for substation transformer, comprise the following steps:
(1) substation transformer that power supply department is special to users all in distribution region carries out Unified coding, and is entered in the data storage cell of power supply department by the capacity information of the station address information corresponding to each coding, substation transformer and the gross data of copper, iron loss and open circuit loss and short circuit loss;
(2) metering method of massive quantity power supply and measurement is adopted, the power load of real time measure user, and send metrical information to CPU (central processing unit), meanwhile, high side voltage current measurement chip and low-pressure side voltage and current measurement chip, by the voltage and current information collected and the coding distributing to substation transformer, also send CPU (central processing unit) to;
(3) substation transformer of acquisition coding first mates with user by CPU (central processing unit), call the capacity information of the substation transformer corresponding to this user and the gross data of copper, iron loss and open circuit loss and short circuit loss again, and in conjunction with the user power utilization load of current acquisition, draw the substation transformer power attenuation number percent in theory of this user
, meanwhile, then according to the high side voltage of current acquisition, electric current and low-pressure side voltage, current information, draw the substation transformer power attenuation number percent in practice of this user
;
(4) CPU (central processing unit) is by theoretic for substation transformer power attenuation number percent
with the power attenuation number percent of reality
contrast, if
, then show that this user power utilization is normal; If
>
, then enter step (5),
represent the input of substation transformer, export coefficient of balance, relevant with the distribution transformer capacity of user;
(5) CPU (central processing unit) finds that the substation transformer of this user is in
>
state time, then can auto-alarming mark the user as stealing suspicion family, meanwhile, the power load of this user and occur that the temporal information of alarm will be recorded and preserve in the data store, and automatically upgrading once at interval of a period of time; If the substation transformer of this user returns to after certain interval of time
state, then the data recorded because there is stealing suspicion before for this user in data storage cell will be automatically cleared, otherwise enter step (6);
(6) after certain interval of time, the substation transformer of this user is still in
>
state, then show that this user exists electricity filching behavior really, now, CPU (central processing unit) directly will be labeled as stealing user this user, simultaneously data storage cell will record and preserve the power load of user, stealing starts and termination time data message, using the evidence as user's stealing.
For substation transformer theoretic power attenuation number percent and actual power attenuation number percent computation process and judge whether stealing according to as follows:
Establishing piezoelectric transformer high-pressure side A, B, C three-phase voltage is respectively
,
,
, three-phase current is respectively
,
,
, then substation transformer input active power
for
Establishing piezoelectric transformer low-pressure side A, B, C three-phase voltage are respectively
,
,
, three-phase current is respectively
,
,
, then substation transformer active power of output
for
The active power of then substation transformer input, output actual loss
for
Then actual loss number percent
for
To the substation transformer of same model different capabilities, the theoretic power attenuation of substation transformer can be calculated according to current load situation
for
, adopt the object of electric energy metrical unit real time measure user power utilization load to be just in the present invention, the electricity consumption similar day historical load of user can be determined according to the user power utilization load of metering, so that calculating parameter
with
.
Wherein
----substation transformer open circuit loss
----fluctuation of load loss factor (can try to achieve according to substation transformer similar day historical load)
----substation transformer average load coefficient (can try to achieve according to substation transformer similar day historical load)
----substation transformer short circuit loss
Can obtain under normal circumstances, substation transformer is similar to reasonable loss number percent
for
wherein
for the capacity of substation transformer
According to above result of calculation, if
>
,
represent the input of substation transformer, go out coefficient of balance, relevant with the distribution transformer capacity of user, then think that this user exists the possibility of stealing; If
, then think that this user power utilization is normal.
What adopt for user power utilization load in the present invention is the metering method of massive quantity power supply and measurement, and in fact also can adopt the high metering method for low meter, the processing procedure of related data is consistent with the metering method of employing massive quantity power supply and measurement.
Claims (3)
1. the electricity anti-stealing system for substation transformer, it is characterized in that: comprise data acquisition module, data transmitting module and data processing module, described data acquisition module comprises and is arranged on the on high-tension side electric energy metrical unit of substation transformer, high side voltage mutual inductor, current transformer and high side voltage current measurement chip and be arranged on the low-pressure side voltage transformer (VT) of substation transformer low-pressure side, current transformer and low-pressure side voltage and current measurement chip, described electric energy metrical unit, described high side voltage current measurement chip is connected with the data transmitter in described data transmitting module respectively with the output terminal of described low-pressure side voltage and current measurement chip, described data transmitting module comprises data transmitter and data sink, and data transmitter communicates with data sink and mates, the input end of the output terminal connection data processing module of data sink, described data processing module comprises CPU (central processing unit) and data storage cell, and CPU (central processing unit) is connected with data storage cell, the output terminal of the input end connection data receiver of CPU (central processing unit).
2. the electricity anti-stealing system for substation transformer according to claim 1, is characterized in that: described temperature survey chip and/or voltage and current measurement chip adopt cs5464 chip.
3. utilize the system described in claim 1 to realize substation transformer to oppose electricity-stealing a method, it is characterized in that, comprise the following steps:
(1) substation transformer that power supply department is special to users all in distribution region carries out Unified coding, and is entered in the data storage cell of power supply department by the capacity information of the station address information corresponding to each coding, substation transformer and the gross data of copper, iron loss and open circuit loss and short circuit loss;
(2) metering method of massive quantity power supply and measurement is adopted, the power load of real time measure user, and send metrical information to CPU (central processing unit), meanwhile, high side voltage current measurement chip and low-pressure side voltage and current measurement chip, by the voltage and current information collected and the coding distributing to substation transformer, also send CPU (central processing unit) to;
(3) substation transformer of acquisition coding first mates with user by CPU (central processing unit), call the capacity information of the substation transformer corresponding to this user and the gross data of copper, iron loss and open circuit loss and short circuit loss again, and in conjunction with the user power utilization load of current acquisition, draw the substation transformer power attenuation number percent in theory of this user
, meanwhile, then according to the high side voltage of current acquisition, current information and low-pressure side voltage, current information, draw the substation transformer power attenuation number percent in practice of this user
;
(4) CPU (central processing unit) is by theoretic for substation transformer power attenuation number percent
with the power attenuation number percent of reality
contrast, if
, then show that this user power utilization is normal; If
>
, then enter step (5),
represent the input of substation transformer, export coefficient of balance, relevant with the distribution transformer capacity of user;
(5) CPU (central processing unit) finds that the substation transformer of this user is in
>
state time, then can auto-alarming mark the user as stealing suspicion family, meanwhile, the power load of this user and occur that the temporal information of alarm will be recorded and preserve in the data store, and automatically upgrading once at interval of a period of time; If the substation transformer of this user returns to after certain interval of time
state, then the data recorded because there is stealing suspicion before for this user in data storage cell will be automatically cleared, otherwise enter step (6);
(6) after certain interval of time, the substation transformer of this user is still in
>
state, then show that this user exists electricity filching behavior really, now, CPU (central processing unit) directly will be labeled as stealing user this user, simultaneously data storage cell will record and preserve the power load of user, stealing starts and termination time data message, using the evidence as user's stealing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410716040.6A CN104407189A (en) | 2014-12-02 | 2014-12-02 | Electricity stealing prevention system and method for distribution transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410716040.6A CN104407189A (en) | 2014-12-02 | 2014-12-02 | Electricity stealing prevention system and method for distribution transformer |
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| CN105116190A (en) * | 2015-07-09 | 2015-12-02 | 王双文 | Novel high-voltage user electricity stealing preventing system |
| CN105158536A (en) * | 2015-08-31 | 2015-12-16 | 国网山东省电力公司淄博供电公司 | Inspection method for electricity larceny prevention |
| CN105938346A (en) * | 2016-06-23 | 2016-09-14 | 国网山东省电力公司安丘市供电公司 | Electricity larceny prevention power metering intelligent acquisition terminal system |
| CN107064621A (en) * | 2017-04-10 | 2017-08-18 | 合肥工业大学 | Intelligent electric meter data compression method and system |
| CN110346623A (en) * | 2019-08-14 | 2019-10-18 | 广东电网有限责任公司 | It is a kind of to lock the system of stealing user, method and apparatus |
| CN111060729A (en) * | 2019-12-31 | 2020-04-24 | 湖南龙之翔智能科技有限公司 | Electricity stealing prevention method and system for intelligent electric meter |
| CN111413594A (en) * | 2019-12-10 | 2020-07-14 | 王纪旋 | Accurate positioning method for electricity stealing |
| CN113049863A (en) * | 2021-03-16 | 2021-06-29 | 青岛鼎信通讯股份有限公司 | Load monitoring unit-based electricity stealing user segmented positioning method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104835396A (en) * | 2015-05-11 | 2015-08-12 | 北京新源绿网节能科技有限公司 | Simulation system based on anti-electric-larceny skill training |
| CN105116190A (en) * | 2015-07-09 | 2015-12-02 | 王双文 | Novel high-voltage user electricity stealing preventing system |
| CN105158536B (en) * | 2015-08-31 | 2018-07-03 | 国网山东省电力公司淄博供电公司 | Anti-electricity-theft checking method |
| CN105158536A (en) * | 2015-08-31 | 2015-12-16 | 国网山东省电力公司淄博供电公司 | Inspection method for electricity larceny prevention |
| CN105938346A (en) * | 2016-06-23 | 2016-09-14 | 国网山东省电力公司安丘市供电公司 | Electricity larceny prevention power metering intelligent acquisition terminal system |
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| CN107064621A (en) * | 2017-04-10 | 2017-08-18 | 合肥工业大学 | Intelligent electric meter data compression method and system |
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| CN110346623A (en) * | 2019-08-14 | 2019-10-18 | 广东电网有限责任公司 | It is a kind of to lock the system of stealing user, method and apparatus |
| CN111413594A (en) * | 2019-12-10 | 2020-07-14 | 王纪旋 | Accurate positioning method for electricity stealing |
| CN111060729A (en) * | 2019-12-31 | 2020-04-24 | 湖南龙之翔智能科技有限公司 | Electricity stealing prevention method and system for intelligent electric meter |
| CN111060729B (en) * | 2019-12-31 | 2020-10-16 | 湖南龙之翔智能科技有限公司 | Electricity stealing prevention method and system for intelligent electric meter |
| CN113049863A (en) * | 2021-03-16 | 2021-06-29 | 青岛鼎信通讯股份有限公司 | Load monitoring unit-based electricity stealing user segmented positioning method |
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Application publication date: 20150311 |