CN1383108A - Real-time monitor and analysis system for power supply network - Google Patents
Real-time monitor and analysis system for power supply network Download PDFInfo
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- CN1383108A CN1383108A CN 02110057 CN02110057A CN1383108A CN 1383108 A CN1383108 A CN 1383108A CN 02110057 CN02110057 CN 02110057 CN 02110057 A CN02110057 A CN 02110057A CN 1383108 A CN1383108 A CN 1383108A
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Abstract
The invention signals device includes the terminals for collecting electric quantity and the processing terminal of the main station, which is connected to the terminals for collecting electric quantity through the twisted-pair with RS-485 as the standard on ir its electric power carrier system mode. In the metering point, the operating data of the energy meter are converted to the pulse form by using the optical electronic switching mode. The said data are circularly converted to the pulse form, which are stored and packed by the collecting electric quantity terminal and the packed data are to be picked up by the processing terminal of the main station in future. The processing terminal of the main station takes charge of the control and data processing for the collecting electric quantity terminals in whole system as well as in prescribed time of each data cycle length.
Description
Technical field
The present invention relates to a kind of telltale.Be a kind of real-time monitor and analysis system for power supply network specifically.
Technical background
In recent years, some unprincipled fellows stole State Grid's resource rampantly under the ordering about of interests, caused the line loss severe overweight of some circuits, caused unnecessary loss for country and enterprise.Appearance along with the technology electricity filching means, electricity filching behavior has more disguise and randomness, adds power consumer than reasons such as dispersions, the electricity filching behavior that exists in the very difficult discovery in time of the managerial personnel network, more existing precautionary measures mostly are passive strick precautions, can not find electricity filching behavior at any time.
In order to alleviate managerial personnel's labour intensity, electric power system is widelyd popularize long-distance meter-reading system now, the power consumption that managerial personnel can be shown to the electric supply meter " seeing " under the home-confined situation is that 97251424 " powerline remote meter reading table end device " and application number are 98202278 " remote automatic meter reading device " as application number.But whether these long-distance meter-reading systems with the power consumption of explicit user ammeter, can not exist metering fault and electricity filching behavior to judge to the user only.
Technology contents
The purpose of this invention is to provide a kind of real-time monitor and analysis system for power supply network, judge the when and where that metering fault, electricity filching behavior take place automatically and accurately, calculate the quantity of electric quantity loss, make management of power use personnel can grasp network load ruuning situation timely.
For achieving the above object, the present invention adopts following technical scheme:
Real-time monitor and analysis system for power supply network of the present invention, comprise the critical point electric quantity acquisition terminal that is installed on the metering electric energy meter of supply network critical point, be installed in user's electric quantity acquisition terminal and main website processing terminal on each user side metering electric energy meter, the main website processing terminal is by being that the twisted-pair feeder or the power carrier mode of standard is connected with user's electric quantity acquisition terminal with critical point electric quantity acquisition terminal with the RS-485 interface; The electric quantity acquisition terminal comprises critical point electric quantity acquisition terminal and user's electric quantity acquisition terminal, at each stoichiometric point, with the mode of opto-electronic conversion the service data of electric energy meter is converted to impulse form, and get storage by electric quantity acquisition terminal meter, with the pulse data arrangement packing of each datacycle time, extract in order to the main website processing terminal; The main website processing terminal is responsible for the control and the data processing of total system electric quantity acquisition terminal, in order to guarantee that time synchronized, data precision reach requirement, the main website processing terminal sends correcting delay signal and extracts data to each stoichiometric point electric quantity acquisition terminal constantly in the regulation of each datacycle time, then carrying data are carried out following processing: utilize the data of critical point electric quantity acquisition terminal and each user's electric quantity acquisition terminal collection to carry out line loss calculating, compare with default reasonable line loss, out-of-limit as numerical value, send alarm prompt.
As to further improvement of the present invention, described main website processing terminal comprises data processing terminal and main website management computer, the main website management computer is responsible for system data is carried out real-time analysis, when data processing terminal is alarmed or is needed the extraction system data, the main website management computer extracts the data of plurality of continuous time period from data processing terminal, the electric weight time distribution parameter that comprises each stoichiometric point, grid line loss rate time distribution parameter, network line loss amount time distribution parameter, network line loss amount and the compound comparative parameter of each stoichiometric point electric weight, the line loss per unit parameter, and data are carried out following analysis, the main website microcomputer is at first analyzed the load line loss rate, compare with historical load line loss per unit rule with out-of-limit line loss per unit value and network load variation, whether the out-of-limit value of checking line loss is relevant with the proper network load variations, further determines Threshold Crossing Alert character.When analysis has determined that alarm character belongs to improper situation, according to each stoichiometric point electric weight time distribution parameter Changing Pattern, the electric weight of all user's stoichiometric points in the monitoring out-of-limit moment of line loss has or not jumping phenomenon, have or not the electrical parameter that the normal variation rule occurs not meeting, to might cause that user's stoichiometric point of line loss per unit Threshold Crossing Alert all lists one by one, utilize network line loss amount then and may have the compound comparative parameter comparative analysis of unusual stoichiometric point electric weight, accurately judge the place that stealing and metering fault exist, the charge value that this time period of computing is lost.
Above-mentioned electric quantity acquisition terminal comprises king oscillator circuit, pulse signal input circuit, real-time clock calendar circuit, signal Processing and memory circuit, signal output apparatus, pulse signal input circuit is connected the input end of signal Processing and memory circuit, the king oscillator circuit is connected the clock signal input terminal of signal Processing and memory circuit, real-time clock calendar circuit is connected the interrupting input end of signal Processing and memory circuit, and signal output apparatus is connected the output terminal of signal Processing and memory circuit.
Described pulse signal input circuit is the filtering circuit that is made of resistance and electric capacity.
Described signal output apparatus is the RS-485 interface circuit.
The present invention has following function and advantage:
Monitoring in real time.Setting data cycling time, the ruuning situation and the electric weight load condition of each measuring apparatus in the monitoring network automatically as required.
Automatically analyze.Real-time multi-angle analysis user electricity consumption rule, the various load parameters in the computational grid, are searched reason and place that unusual parameter occurs at quantitative test.
Alarm function.To abnormal network load parameter, the alarm of user's electrical parameter, prompting, the native system operation conditions is detected in real time, trouble spot alarm, prompting.
Memory function, the main website management computer can store the data in several years, can extract needed historical data at any time.
Automatic data logging.Can set the synchronous metering time, read the real data of each stoichiometric point electric energy meter of whole network automatically, and add up, show, print.
Description of drawings
Fig. 1 is the population distribution schematic diagram of one embodiment of the present of invention.
Fig. 2 is the electrical schematic diagram of the electric quantity acquisition terminal of one embodiment of the present of invention;
Fig. 3 is 24 hours line loss amounts and certain user's power electric meter power consumption multiple analysis figure;
Fig. 4 is 24 hours line loss amounts and certain another user's power electric meter power consumption multiple analysis figure.
Specific embodiment
As shown in Figure 1, real-time monitor and analysis system for power supply network of the present invention comprises the critical point electric quantity acquisition terminal 1 that is installed on the metering electric energy meter of supply network critical point, is installed in user's electric quantity acquisition terminal 2 and main website processing terminal 3 on each user side metering electric energy meter, and main website processing terminal 3 is by being that the twisted-pair feeder or the power carrier mode of standard is connected with user's electric quantity acquisition terminal 2 with critical point electric quantity acquisition terminal 1 with the RS-485 interface; The electric quantity acquisition terminal comprises critical point electric quantity acquisition terminal 1 and user's electric quantity acquisition terminal 2, at each stoichiometric point, with the mode of opto-electronic conversion the service data of electric energy meter is converted to impulse form, and get storage by electric quantity acquisition terminal meter, with the pulse data arrangement packing of each datacycle time, extract in order to main website processing terminal 3; Main website processing terminal 3 is responsible for the control and the data processing of total system electric quantity acquisition terminal, in order to guarantee that time synchronized, data precision reach requirement, main website processing terminal 3 sends correcting delay signal and extracts data to each stoichiometric point electric quantity acquisition terminal constantly in the regulation of each datacycle time, then carrying data are carried out following processing: the data of utilizing critical point electric quantity acquisition terminal 1 and user's electric quantity acquisition terminal 2 to gather are carried out line loss and are calculated, compare with default reasonable line loss, out-of-limit as numerical value, send alarm prompt.
Described main website processing terminal 3 comprises data processing terminal and main website management computer, the main website management computer is responsible for system data is carried out real-time analysis, when data processing terminal is alarmed or is needed the extraction system data, the main website management computer extracts the data of plurality of continuous time period from data processing terminal, the electric weight time distribution parameter that comprises each stoichiometric point, grid line loss rate time distribution parameter, network line loss amount time distribution parameter, network line loss amount and the compound comparative parameter of each stoichiometric point electric weight, accumulative total line loss per unit parameter, the line loss per unit parameter, and data are carried out following analysis, the main website microcomputer is at first analyzed the load line loss rate, changes with historical load line loss per unit rule comparing with out-of-limit line loss per unit value and network load, whether the out-of-limit value of checking line loss is relevant with the proper network load variations, further determines Threshold Crossing Alert character.When analysis has determined that alarm character belongs to improper situation, according to each stoichiometric point electric weight time distribution parameter Changing Pattern, the electric weight of all user's stoichiometric points in the monitoring out-of-limit moment of line loss has or not jumping phenomenon, have or not the electrical parameter that the normal variation rule occurs not meeting, to might cause that user's stoichiometric point of line loss per unit Threshold Crossing Alert all lists one by one, utilize network line loss amount then and may have the compound comparative parameter comparative analysis of unusual stoichiometric point electric weight, accurately judge the place that stealing and metering fault exist, the charge value that this time period of computing is lost.
Above-mentioned analysis and judgement is based on following principle:
The power consumption sum that the power consumption that the line loss amount=critical point electric quantity acquisition terminal 1 shows-each user's electric quantity acquisition terminal 2 shows
Line loss per unit=(power consumption that the line loss amount/critical point electric quantity acquisition terminal 1 shows)
*100%
1, whether normally grid line loss rate parameter is network confession, electricity sales amount numerical value important symbol.Under the normal power supply situation, because the influence of factors such as circuit, transformer can produce a part of kwh loss, be called reasonable line loss in the network, the numeric ratio of general reasonable line loss per unit is lower.When having electricity filching behavior or metering fault in the network, the line loss per unit in the network can be considerably beyond reasonable line loss per unit.
2, load line loss rate parameter is actually in the network under the different load situation line loss per unit rationally.Because the load in the network is not a fixed numbers, current value in the whole network also changes thereupon, therefore because reasonable line loss and the load condition in the network that factors such as line resistance, transformer internal resistance, measuring apparatus error produce have certain connection rule.When having electricity filching behavior or metering fault in the network, this connection rule is broken.
3, each stoichiometric point electric weight time distribution parameter is in each datacycle time, and the terminal data collector has wherein been forgiven the total electric weight of network and the user's electric weight rule at different time to this stoichiometric point electric energy meter data sampling.
4, network line loss amount time distribution parameter is the actual quantity of each datacycle time network kwh loss.
5, network line loss amount and the compound comparative parameter of each stoichiometric point electric weight are the values that network line loss amount and each stoichiometric point electric weight compare respectively.
Whether normally line loss per unit is sign supply network load operation situation important parameter, and power consumption increases under the normal condition, and the line loss amount also increases, and its line loss per unit also produces subtle change thereupon.When user's stealing occurring or because gauging table fault when causing the situation of electric energy meter slow-speed, stall, the power consumption that this user's electric quantity acquisition terminal 2 shows reduces, the line loss amount but increases, and line loss per unit sharply rises.
As shown in Figure 3, what curve A was represented is the situation of change of the user power utilization amount of user's electric quantity acquisition terminal 2 demonstrations, and what curve B was represented is the situation of change of the line loss amount of same whole supply network of time.Arrow C indication location tables is shown in about the 20:35 branch among the figure, the power consumption that this user's electric quantity acquisition terminal 2 shows reduces suddenly significantly, and simultaneously, the line loss amount of whole supply network increases considerably suddenly, and the minimizing of the added value of line loss amount and this user power utilization amount value is almost equal; About arrow D indication position was represented to divide from 22:50, this user's power consumption returned to usual level, and the line loss amount of whole supply network also is reduced to normal scope.According to the analysis to above-mentioned data, can conclude: this user begins stealing at 20:35, stops electricity filching behavior to 22:50, recovers normal electricity consumption.Equally, arrow E represents that this user begins stealing from 3:05, and at 6:50 to hour of 7:50 because the workman relieves, enter low power consumption, the line loss amount enters low ebb too.
The analytical approach of Fig. 4 is the same, arrow F, arrow G indication position represent that this user is under the situation of normal electricity consumption, employing technology electricity filching means stops operating electric energy meter fully, and this moment, the power consumption of user's electric quantity acquisition terminal 2 demonstrations was zero, and the line loss amount is doubled and redoubled.
As shown in Figure 2, electric quantity acquisition terminal 2 comprises king oscillator circuit, pulse signal input circuit, real-time clock calendar circuit, signal Processing and memory circuit, signal output apparatus, pulse signal input circuit is connected the input end of signal Processing and memory circuit, the king oscillator circuit is connected the clock signal input terminal of signal Processing and memory circuit, real-time clock calendar circuit is connected the interrupting input end of signal Processing and memory circuit, and signal output apparatus is connected the output terminal of signal Processing and memory circuit.Pulse signal input circuit is the filtering circuit that is made of resistance and electric capacity.Signal output apparatus is the RS-485 interface circuit.Pulse signal MC0---the MC4 of 5 road electric energy meters output, the filtering circuit that---RRA4 and capacitor C RA0---CRA4 forms respectively via resistance R RA0, be input to port RA0---the RA4 of integrated circuit (IC) 1 after the filtering interfering noise signal, the pulse of 1 pair of 5 port of integrated circuit (IC) is counted and is handled, and is kept in 5 different memory banks after reverting to the actual electrical numerical quantity.The 6th foot mouth RB0 of integrated circuit (IC) 1 connects the interruption output of real-time clock, calendar chip IC3, according to system's setting, real-time clock, calendar chip IC3 send look-at-me by the 3rd pin to the port RB0 of integrated circuit (IC) 1 constantly in the predetermined data circulation, after integrated circuit (IC) 1 detects look-at-me,, and respectively 5 charge values are deposited in the sheet in the data storing body titled with time tag to real-time clock, calendar chip IC3 extraction time numerical value by the I2C bus that constitutes by 10 pin RB4,11 pin RB5.The 7th pin of integrated circuit (IC) 1, the 8th pin, the 9th pin, the 13rd pin constitute the data communication with the RS-485 interface chip, and wherein: D1 is the data inputs, and R0 is the data outputs, and DE, RE are respectively data and receive control and send out control.System host is connected with the RS-485 port by communication line or communication facilities, has constituted and the communicating by letter of electric quantity data acquisition terminal.After integrated circuit (IC) 1 received signal, send the electric quantity data of each of section to the RS-485 port according to the requirement of system host cycling time.In order to guarantee the accuracy of data analysis, each datacycle system host constantly sends correcting delay signal to data collection station, after integrated circuit (IC) 1 receives correcting delay signal, send correcting delay signal to real-time clock, calendar chip IC3 by the I2C bus of forming by port RB4, RB5.
Other circuit parts: D1-1, R1-1, C1-3 form the electrify restoration circuit of integrated circuit (IC) 1.XT1, C1-1, C1-2 form the main vibration circuit of integrated circuit (IC) 1.
Port RB6, the RRB6 of integrated circuit (IC) 1, DRB6 form the duty monitoring circuit of integrated circuit (IC) 1.
C2-1, C2-2, XT2, R2-1, R2-2 form the main vibration circuit of real-time clock, calendar chip IC3.
The model of each integrated circuit: IC1:PIC16F84IC2:65LBC184IC3:X1203
Claims (5)
1, real-time monitor and analysis system for power supply network, it is characterized in that: it comprises the critical point electric quantity acquisition terminal (1) that is installed on the metering electric energy meter of supply network critical point, is installed in user's electric quantity acquisition terminal (2) and main website processing terminal (3) on each user side metering electric energy meter, and main website processing terminal (3) is by being that the twisted-pair feeder or the power carrier mode of standard is connected with user's electric quantity acquisition terminal (2) with critical point electric quantity acquisition terminal (1) with the RS-485 interface; The electric quantity acquisition terminal comprises critical point electric quantity acquisition terminal (1) and user's electric quantity acquisition terminal (2), at each stoichiometric point, with the mode of opto-electronic conversion the service data of electric energy meter is converted to impulse form, and get storage by electric quantity acquisition terminal meter, with the pulse data arrangement packing of each datacycle time, extract in order to main website processing terminal (3); Main website processing terminal (3) is responsible for the control and the data processing of total system electric quantity acquisition terminal, in order to guarantee that time synchronized, data precision reach requirement, main website processing terminal (3) sends correcting delay signal and extracts data to each stoichiometric point electric quantity acquisition terminal constantly in the regulation of each datacycle time, then carrying data are carried out following processing: the data of utilizing critical point electric quantity acquisition terminal (1) and user's electric quantity acquisition terminal (2) to gather are carried out line loss and are calculated, compare with default reasonable line loss, out-of-limit as numerical value, send alarm prompt.
2, real-time monitor and analysis system for power supply network according to claim 1, it is characterized in that: described main website processing terminal (3) comprises data processing terminal and main website management computer, the main website management computer is responsible for system data is carried out real-time analysis, when data processing terminal is alarmed or is needed the extraction system data, the main website management computer extracts the data of plurality of continuous time period from data processing terminal, the electric weight time distribution parameter that comprises each stoichiometric point, grid line loss rate time distribution parameter, network line loss amount time distribution parameter, network line loss amount and the compound comparative parameter of each stoichiometric point electric weight, the line loss per unit parameter, and data are carried out following analysis, the main website microcomputer is at first analyzed the load line loss rate, compare with historical load line loss per unit rule with out-of-limit line loss per unit value and network load variation, whether the out-of-limit value of checking line loss is relevant with the proper network load variations, further determines Threshold Crossing Alert character.When analysis has determined that alarm character belongs to improper situation, according to each stoichiometric point electric weight time distribution parameter Changing Pattern, the electric weight of all user's stoichiometric points in the monitoring out-of-limit moment of line loss has or not jumping phenomenon, have or not the electrical parameter that the normal variation rule occurs not meeting, to might cause that user's stoichiometric point of line loss per unit Threshold Crossing Alert all lists one by one, utilize network line loss amount then and may have the compound comparative parameter comparative analysis of unusual stoichiometric point electric weight, accurately judge the place that stealing and metering fault exist, the charge value that this time period of computing is lost.
3, real-time monitor and analysis system for power supply network according to claim 1, it is characterized in that: described electric quantity acquisition terminal comprises the king oscillator circuit, pulse signal input circuit, real-time clock calendar circuit, signal Processing and memory circuit, signal output apparatus, pulse signal input circuit is connected the input end of signal Processing and memory circuit, the king oscillator circuit is connected the clock signal input terminal of signal Processing and memory circuit, real-time clock calendar circuit is connected the interrupting input end of signal Processing and memory circuit, and signal output apparatus is connected the output terminal of signal Processing and memory circuit.
4, real-time monitor and analysis system for power supply network according to claim 3 is characterized in that: described pulse signal input circuit is the filtering circuit that is made of resistance and electric capacity.
5, real-time monitor and analysis system for power supply network according to claim 3 is characterized in that: described signal output apparatus is the RS-485 interface circuit.
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CN1331294C (en) * | 2004-08-27 | 2007-08-08 | 江苏省电力公司南京供电公司 | Method for establishing electric network monitoring disaster back-up system |
CN101995535A (en) * | 2009-08-27 | 2011-03-30 | 浙江省电力公司 | Method for judging credibility of CT (Computed Tomography) secondary side short circuit |
CN102280874A (en) * | 2010-06-10 | 2011-12-14 | 上海市电力公司 | Platform-area line loss rate detecting system |
WO2012123790A1 (en) * | 2011-03-15 | 2012-09-20 | Paikray Sitaram Prasad | An electricity supply management system and method therefor |
CN103942453A (en) * | 2014-05-07 | 2014-07-23 | 华北电力大学 | Intelligent electricity utilization anomaly detection method for non-technical loss |
CN105092917A (en) * | 2015-07-20 | 2015-11-25 | 河南行知专利服务有限公司 | Electricity theft prevention system |
CN105203838A (en) * | 2015-09-21 | 2015-12-30 | 国家电网公司 | Electricity quantity acquisition system |
CN109470278A (en) * | 2018-09-18 | 2019-03-15 | 中国电力科学研究院有限公司 | A kind of metering aggregate-value of determining measuring equipment is in the method and system that increment is nought state |
CN110231504A (en) * | 2019-07-09 | 2019-09-13 | 国网河北省电力有限公司邢台供电分公司 | Detect the method and stealing detection device of electricity stealing |
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CN101995535A (en) * | 2009-08-27 | 2011-03-30 | 浙江省电力公司 | Method for judging credibility of CT (Computed Tomography) secondary side short circuit |
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CN102280874A (en) * | 2010-06-10 | 2011-12-14 | 上海市电力公司 | Platform-area line loss rate detecting system |
WO2012123790A1 (en) * | 2011-03-15 | 2012-09-20 | Paikray Sitaram Prasad | An electricity supply management system and method therefor |
CN103942453A (en) * | 2014-05-07 | 2014-07-23 | 华北电力大学 | Intelligent electricity utilization anomaly detection method for non-technical loss |
CN105092917A (en) * | 2015-07-20 | 2015-11-25 | 河南行知专利服务有限公司 | Electricity theft prevention system |
CN105092917B (en) * | 2015-07-20 | 2018-06-22 | 国网河南省电力公司平顶山供电公司 | A kind of electricity anti-theft system |
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CN111711192A (en) * | 2020-06-22 | 2020-09-25 | 国网湖南省电力有限公司 | Real-time line loss analysis method and system for lean management of line loss of support station area |
CN111711192B (en) * | 2020-06-22 | 2022-03-11 | 国网湖南省电力有限公司 | Real-time line loss analysis method and system for lean management of line loss of support station area |
CN113364125A (en) * | 2020-07-01 | 2021-09-07 | 国网山东省电力公司费县供电公司 | Management line loss detection system based on voltage adjustment identification |
CN113364125B (en) * | 2020-07-01 | 2022-06-17 | 国网山东省电力公司费县供电公司 | Management line loss detection system based on voltage adjustment identification |
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