CN1690718A - Method for real-time monitoring electric quantity equilibrium of power supply/utilization system - Google Patents
Method for real-time monitoring electric quantity equilibrium of power supply/utilization system Download PDFInfo
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- CN1690718A CN1690718A CN 200410023960 CN200410023960A CN1690718A CN 1690718 A CN1690718 A CN 1690718A CN 200410023960 CN200410023960 CN 200410023960 CN 200410023960 A CN200410023960 A CN 200410023960A CN 1690718 A CN1690718 A CN 1690718A
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Abstract
A monitor method for electric quantity balance of supplying and using electricity system is use to detect measurement device for input and output high voltage electric energy in transformer, substation busbar and local power network. Connect computer to all input and output electric energy meters of supplying and using electricity system, run the program of this invention; realize monitor real-time to all electric larceny phenomena, abnormal condition state and accident of electric measurement device and electric meter itself, which makes the monitor and management to electric energy measurement loop and meters be more accuracy, quickness and efficiency.
Description
Affiliated technical field
The present invention relates to a kind of monitoring method of electricity supplying and using system electric quantity balancing, particularly a kind of can be to the electric quantity balancing of the input and output high-voltage electric energy measurement of the transformer of electric system, substation bus bar, the local power net method of monitoring in real time.
Background technology
On the high-voltage electric energy measurement loop of the transformer of electricity supplying and using system, substation bus bar, local power net, moving the gate energy meter that is used for trade settlement, the operation conditions of these gate energy meters is directly connected to the economic interests of sending out power supply enterprise, high-voltage electric energy measurement current in loop mutual inductor, voltage transformer (VT) and electric energy meter have been formed high-voltage electric-energy meter, in actual moving process, the various piece of electric power meter all occurs the possibility of abnomal condition, have plenty of that stealing causes, what have then is the fault of equipment itself; The characteristics of electric system have just determined the transient change of power load, because at present to the electricity supplying and using system transformer, substation bus bar, the electric quantity acquisition in local power net input and output high-voltage electric energy measurement loop does not have the function of synchronous freezing data, so just can't accomplish some electricity supplying and using systems are carried out the accurate calculating of electric quantity balancing, in the reality often by the EQUILIBRIUM CALCULATION FOR PROCESS of manually carrying out electric quantity data relatively with the interval of every day or a couple of days and even every month, with historical data and personal experience as basis for estimation, not only degree of accuracy is low, efficient is poor, and be easy to occur neglecting and careless mistake, under the big situation of some deviation ratio, can't distinguish is owing to check meter temporal inconsistent, user's stealing electricity phenomenon has still appearred, or the result that caused of the fault of electric power meter own.
Summary of the invention
Purpose of the present invention, provide a kind ofly can system's input and output electric quantity balancing state of the transformer of electricity supplying and using system, substation bus bar, local power net be carried out accurately, method for supervising fast and effectively, the present invention deals with problems and adopts following step:
A) computing machine is according to the time interval that sets, and all input and output electric energy meters of electricity supplying and using system of monitoring send the instruction of freezing the current electric quantity data to connect, and allows electric energy meter in a flash the current electric quantity data stored together;
B) computing machine reads the frozen electric quantity data of these electric energy meters one by one, it is the table sign indicating number of electric energy meter, and read the electric quantity data table sign indicating number that electric quantity data table sign indicating number deducts same the electric energy meter that the last time interval reads with this respectively, draw the table yardage that electric energy meter is walked in the time interval that sets; Be multiplied by the no-load voltage ratio of current transformer and voltage transformer (VT) in this measuring apparatus then with this table yardage, draw the actual electrical value Δ N that this electric energy meter is measured in this time interval;
C) computing machine is according to setting, and the actual electrical value with the electric energy meter of input side and outgoing side adds up respectively, and the total electric weight ∑ of the input Δ N that draws native system goes into the total electric weight ∑ of the output of system Δ N; Utilize following formula to calculate the deviation ratio Δ value of input and output electric weight then:
D) deviation ratio Δ value and the bound alarming value that sets are compared, if deviation ratio Δ value greater than the lower limit alarming value of setting less than the upper limit alarm value of setting, promptly in the bound alarming value zone that sets, program is then directly returned step a and is proceeded to detect; Otherwise computing machine sends warning message, time and deviation ratio Δ value that recording events takes place, and the data-storing of the electric energy meter of the line correlation of going forward side by side still returns step a, cycle detection then;
The invention has the beneficial effects as follows: because it is that the final electric weight that measures of electricity supplying and using system is carried out the real-time monitoring of equilibrium state, so only just can in time find the abnomal condition and the fault of all stealing electricity phenomenons and electric energy metrical loop and electric energy meter itself by the electric quantity data of acquisition system input and output electric energy meter, it is more accurate with management to make to the monitoring of system's electric weight and electric power meter, fast, effectively, the economic interests that can directly avoid sending out power supply enterprise suffer bigger loss, thereby guarantee the accuracy and the fairness of electric energy metrical, realize intellectuality system's managing electric quantity.
Description of drawings
Fig. 1 is the software main flow chart of invention
Specific embodiment
Describe embodiments of the invention in detail below in conjunction with accompanying drawing.
After the hardware of system connects as requested, computing machine enters step 110～120, with all electric energy meter handshake communication and unified times of being connected, after finishing the preliminary examination state, enter step 130, judge that whether the present time interval is greater than setting value, if it is non-, then wait for Δ T, establishing Δ T is 1/5th of setting value, circular wait; If yes, then enter step 140, the electric energy meter that is connected is sent the order of freezing current table code data, allow all electric energy meters in a flash current electric quantity data stored together; Enter step 150 then,, read the frozen electric quantity data table of an electric energy meter sign indicating number N by communication interface; Enter step 160 then, judge whether table sign indicating number, if yes, then the N value is deposited among the memory M1 for reading for the first time; If non-, then the N value is deposited among the memory M2; Enter step 170 then, computing machine reads the electric quantity data table sign indicating number that electric quantity data table sign indicating number deducts same the electric energy meter that the last time cycle reads with this respectively, draw the time cycle that sets at interval in the table yardage Δ M that walks of electric energy meter; Be multiplied by the no-load voltage ratio of current transformer and voltage transformer (VT) in this measuring apparatus then with this table yardage Δ M, draw the actual electrical value Δ N that this electric energy meter measures; Enter step 180 then,, judge that this electric energy meter belongs to input side or outgoing side, and Δ N value is deposited in the register of respective side according to setting; Enter step 190, judge whether that system is all electric energy meter readings finish,, then return step 150, proceed reading of data if non-; If yes, then enter step 210, computing machine adds up the actual electrical value of the electric energy meter of input side and outgoing side respectively, draws the total electric weight of input of native system---total electric weight of output of " ∑ Δ N goes into " and system---" ∑ Δ N goes out ", utilizes following formula calculation deviation rate Δ value then:
Enter step 220, according to setting, judge deviation ratio Δ value whether greater than the lower limit alarming value of setting less than the upper limit alarm value of setting, promptly in the bound alarming value zone that sets, if yes, program is then directly returned step 130 and is proceeded to detect; If non-, the communication interface output signal of computing machine, simultaneously, time and deviation ratio Δ value that recording events takes place, and carry out the related data storage of electric energy meter, and still return step 130 then, proceed cycle detection.
Claims (3)
1. electricity supplying and using system input and output electric quantity balancing monitoring method is characterized in that the present invention's employing following steps of dealing with problems:
A) computing machine is according to the time interval that sets, and the input and output electric energy meters all to the electricity supplying and using system that is detected send the instruction of freezing the current electric quantity data, allows electric energy meter in a flash the current electric quantity data stored together;
B) computing machine reads the frozen electric quantity data of these electric energy meters one by one, it is the table sign indicating number of electric energy meter, and read the electric quantity data table sign indicating number that electric quantity data table sign indicating number deducts same the electric energy meter that the last time interval reads with this respectively, draw the table yardage that electric energy meter is walked in the time interval that sets; Be multiplied by the no-load voltage ratio of current transformer and voltage transformer (VT) in this measuring apparatus then with this table yardage, draw the actual electrical value Δ N that this electric energy meter is measured in this time interval;
C) computing machine is according to setting, and the actual electrical value with the electric energy meter of input side and outgoing side adds up respectively, and the total electric weight ∑ of the input Δ N that draws native system goes into the total electric weight ∑ of the output of system Δ N; Utilize following formula to calculate the deviation ratio Δ value of input and output electric weight then:
D) deviation ratio Δ value and the bound alarming value that sets are compared, if deviation ratio Δ value greater than the lower limit alarming value of setting less than the upper limit alarm value of setting, promptly in the bound alarming value zone that sets, program is then directly returned step a and is proceeded to detect; Otherwise computing machine sends warning message, time and deviation ratio Δ value that recording events takes place, and the data-storing of the electric energy meter of the line correlation of going forward side by side still returns step a, cycle detection then;
2. according to the described electricity supplying and using system input and output of claim 1 electric quantity balancing monitoring method, it is characterized in that: the time interval of said setting is 1～10 minute.
3. according to claim 1,2 described electricity supplying and using system input and output electric quantity balancing monitoring methods, it is characterized in that: the higher limit of the deviation ratio Δ value of said input and output electric weight is :+0.2～3.0 lower limits are :-0.2～3.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410023960 CN1690718A (en) | 2004-04-26 | 2004-04-26 | Method for real-time monitoring electric quantity equilibrium of power supply/utilization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410023960 CN1690718A (en) | 2004-04-26 | 2004-04-26 | Method for real-time monitoring electric quantity equilibrium of power supply/utilization system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101794503A (en) * | 2010-04-02 | 2010-08-04 | 深圳市科陆电子科技股份有限公司 | Electric energy balance monitoring system for transformer station |
| CN101458276B (en) * | 2007-12-11 | 2012-09-12 | 深圳市科陆电子科技股份有限公司 | Electric quantity computation method and apparatus and electric meter controlling equipment |
| CN102749541A (en) * | 2012-07-09 | 2012-10-24 | 云南电力试验研究院（集团）有限公司电力研究院 | Energy conservation-based real-time bus and metering equipment state on-line monitoring system |
| CN102868158A (en) * | 2012-09-18 | 2013-01-09 | 巩义市供电公司 | Active electric quantity differential motion out-of-limit event judgment method of integrated lectric energy management system |
| CN103499802A (en) * | 2013-09-05 | 2014-01-08 | 国家电网公司 | Transformer substation meter monitoring method and system |
| CN103701116A (en) * | 2013-12-11 | 2014-04-02 | 云南电力试验研究院（集团）有限公司电力研究院 | Novel intelligent electric quantity balance method adopting power real-time operation |
| CN104155566A (en) * | 2014-09-02 | 2014-11-19 | 国网河北故城县供电公司 | Method for finding tripping of distribution network switches in time |
| CN109637109A (en) * | 2018-12-11 | 2019-04-16 | 国家电网有限公司 | A kind of method that electric quantity data acquisition passes through in power plant |
| CN110988420A (en) * | 2019-12-02 | 2020-04-10 | 深圳供电局有限公司 | Anti-electricity-theft system and anti-electricity-theft control method |
-
2004
- 2004-04-26 CN CN 200410023960 patent/CN1690718A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458276B (en) * | 2007-12-11 | 2012-09-12 | 深圳市科陆电子科技股份有限公司 | Electric quantity computation method and apparatus and electric meter controlling equipment |
| CN101794503A (en) * | 2010-04-02 | 2010-08-04 | 深圳市科陆电子科技股份有限公司 | Electric energy balance monitoring system for transformer station |
| CN101794503B (en) * | 2010-04-02 | 2012-08-15 | 深圳市科陆电子科技股份有限公司 | Electric energy balance monitoring system for transformer station |
| CN102749541A (en) * | 2012-07-09 | 2012-10-24 | 云南电力试验研究院（集团）有限公司电力研究院 | Energy conservation-based real-time bus and metering equipment state on-line monitoring system |
| CN102868158A (en) * | 2012-09-18 | 2013-01-09 | 巩义市供电公司 | Active electric quantity differential motion out-of-limit event judgment method of integrated lectric energy management system |
| CN102868158B (en) * | 2012-09-18 | 2014-12-10 | 巩义市供电公司 | Active electric quantity differential motion out-of-limit event judgment method of integrated lectric energy management system |
| CN103499802A (en) * | 2013-09-05 | 2014-01-08 | 国家电网公司 | Transformer substation meter monitoring method and system |
| CN103701116A (en) * | 2013-12-11 | 2014-04-02 | 云南电力试验研究院（集团）有限公司电力研究院 | Novel intelligent electric quantity balance method adopting power real-time operation |
| CN104155566A (en) * | 2014-09-02 | 2014-11-19 | 国网河北故城县供电公司 | Method for finding tripping of distribution network switches in time |
| CN109637109A (en) * | 2018-12-11 | 2019-04-16 | 国家电网有限公司 | A kind of method that electric quantity data acquisition passes through in power plant |
| CN110988420A (en) * | 2019-12-02 | 2020-04-10 | 深圳供电局有限公司 | Anti-electricity-theft system and anti-electricity-theft control method |
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