CN202957659U - Line loss actual measurement and positioning system based on high voltage electric energy meter - Google Patents
Line loss actual measurement and positioning system based on high voltage electric energy meter Download PDFInfo
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- CN202957659U CN202957659U CN2011205568060U CN201120556806U CN202957659U CN 202957659 U CN202957659 U CN 202957659U CN 2011205568060 U CN2011205568060 U CN 2011205568060U CN 201120556806 U CN201120556806 U CN 201120556806U CN 202957659 U CN202957659 U CN 202957659U
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The utility model relates to a line loss actual measurement and positioning system based on a high voltage electric energy meter, and belongs to the intelligent electrical network power distribution automation field. The line loss actual measurement and positioning system includes a main station and multiple sensor-type high voltage electric energy meter. The main state is provided with a communication module, a data acquisition unit, and a computer. The output terminal of the communication module is connected with the input terminal of the data acquisition unit. The output terminal of the data acquisition unit is connected with the computer. A high voltage power transmission line of a power distribution network with a topological structure is provided with the sensor-type high voltage electric energy meter and each branch line is also provided with the sensor-type high voltage electric energy meter. A communication unit of the sensor-type high voltage electric energy meter is wirelessly connected with the communication module of the main station. Through the integral optimized design and processing, the 6kV-35kV line loss actual measurement is realized, the electric energy can be read, calculated and output directly, the substitution resistance has not to be calculated, the line loss condition and change of the power distribution line can be known accurately in real time, and the error is small. The application scope is wide, the fault points can be eliminated, the line loss management level is greatly improved, the managed line loss is reduced, the electric power leakage and stealing are prevented, and the metering error is reduced. The investment in construction is small, the energy consumption is small, and the economic benefit is improved.
Description
Technical field
The utility model belongs to intelligent grid Distribution Automation Technology field, is a kind of line loss actual measurement and navigation system based on high-voltage electric energy meter specifically.
Background technology
Line loss rate is the integrated technology economic index of electric power system, is also a principal economic indicators of power department.The height of line loss rate had both reflected the quality of a power network constructional aspect and management, also reflected the height of a power department technology management level.Analyze accurately the data of line loss, the kind of the classification of line loss, position line loss point, bent other loss accurately, distinguish normal loss, abnormal loss or stealing, very important to the energy conservation of electric power system.State Grid Corporation of China to line loss management work pay much attention to, put into effect " State Grid Corporation of China's power network line losses administrative provisions ", explicitly point out and will set about carrying out the power network line losses management from Strengthening managing measure and two aspects of technical measures.Wherein, control measures importance is exactly the line losses indices management.The visible level that will improve the line loss management work, it is crucial formulating a scientific and reasonable line losses indices.For grid, because measuring equipment is complete, grid equipment parameter and service data ratio are easier to obtain, the accuracy of data is higher, theory wire loss calculates and the practical line loss statistics is easy to realize, administrative department is relatively more comprehensive, true to the grasp of high voltage power transmission net wire loss situation, formulates a scientific and reasonable line losses indices also than being easier to.Yet, for power distribution network, owing to being subject to the not restriction of congruent many factors of measuring equipment, the operational data collection of its load point difficulty or can't accurately collect, this makes power distribution network theory wire loss result of calculation and actual value differ larger on the one hand, on the other hand can not the accurate statistics practical line loss.Therefore, making at present scientific and reasonable Line Loss of Distribution Network System index also has difficulties.In addition, the direct user oriented of power distribution network, the tax evasion electrical phenomena is more outstanding, is the main source that causes the management line loss.In recent years, due to many-sided factors such as construction and management, city and country Line Loss of Distribution Network System level is still higher, and economize on electricity is fallen to damage and had a high potential.
At present, the 35kV of electric company, 10kV side Line Loss of Distribution Network System index are usually according to line loss statistic data, load variations trend, load measurement, location and the calculated results establishment, in order to improve the line loss managerial skills of power distribution network, electric company adopts following two kinds of methods usually: 1. by load measurement, the location of organizing considerable scale, improve the accuracy that the power distribution network theory wire loss calculates; As the method for measurement of the minimum and maximum electric energy loss of Chinese patent application 200410049711.4 disclosed a kind of medium voltage distribution networks, at first calculate the resistance of distribution network line and transformer; Form the power distribution network nodal-admittance matrix, obtain power distribution network node-resistance matrix.Obtain by block matrice of square the power that power distribution network consumes.Minimum and maximum substitutional resistance by given power distribution network head end electric current, try to achieve the minimum and maximum substitutional resistance linear interpolation function between each given power distribution network head end electric current, survey, locate the size of each phase current according to power distribution network, calculate minimum and maximum substitutional resistance, finally calculate the minimum and maximum electric energy loss of power distribution network in the given period.Utilize the method for this utility model, can judge whether power distribution network exists tax evasion electric weight phenomenon or metering that mistake is arranged, the drawn theoretical electric energy loss upper limit and the line loss rate upper limit reduce the performance assessment criteria of line loss as power distribution network.But the related human and material resources resource consumption of the method is huge, be difficult to form a kind of normality mechanism.Be subject to the impact of current application apparatus simultaneously, existing detection means is carried out load measurement for all distribution lines under all operating modes, location work is also inconceivable, be difficult to implement, and, after equipment is installed and used, its performance parameter can have influence on the line design ability, generation pressure drop, short circuit current etc. while measuring is set and has a strong impact on the actual measured results precision.
2. add up in real time the loss of power distribution network by installing long-distance meter-reading system etc. on the medium-voltage distribution circuit.Chinese patent application CN201010250593.9 discloses a kind of power distribution route loss rate computing system and method, is mainly the convenience in order to realize that the Line Loss of Distribution Network System rate is calculated, rapidity and accuracy and design.Comprise: the amount of power supply collector, be arranged on the public line of described electric substation, gather the amount of power supply of distribution line; Electricity sales acquisition device, comprise the field management terminal, is located at high-pressure side or the low-pressure side of described special-purpose distribution transformer; The terminal collector, be arranged on the low-voltage customer end of described public distribution transformer; Low pressure electricity sales amount collector, be arranged on the low-pressure side of described public distribution transformer; High pressure electricity sales amount collector, be arranged on the distribution line of described electric substation, and be connected with field management system through optical cable.This utility model is without gathering in advance the parameter of each equipment in the power distribution circuit, but by electricity sales acquisition device, the data of each load side of Real-time Obtaining, and can online calculate line loss rate.
Equipment investment and construction volume that method 2 is related are larger, its statistical accuracy also easily is subject to that load shifts, the problem such as metering system multiplying power mistake has a strong impact on during the increase and decrease capacity, and the amount of power supply collector that this application provides and the error of electricity sales acquisition device and energy consumption own are huge, communication system adopts simultaneously, the method can't be deducted the loss of " high for low meter " dedicated transformer, can not find in time to steal, leaky, also can't provide effectively and instruct for falling damage work.
The utility model content
According to above deficiency of the prior art, the purpose of this utility model is to provide a kind of can adapt to various working, and the investment construction is few, and error is little, it is little itself to consume energy, use the actual measurement of the line loss based on high-voltage electric energy meter flexibly and navigation system.
The utility model solves the technical scheme that its technical problem adopts: a kind of line loss actual measurement and navigation system based on high-voltage electric energy meter is characterized in that: comprise that main website, operating side and sensor type high tension electricity energy table form the electric quantity data cloud system by public network/ad-hoc network; The management platform that main website arranges communication module, data acquisition unit and consists of server, software systems, front end processor, the input of the output connection data collecting unit of communication module, the output connection server of data acquisition unit; The sensor type high tension electricity energy table arranged on the total loop point of topological structure power distribution network, each shunting point, load point that each is associated and each single-phase distal point, the sensor type high tension electricity energy table at least comprise electrical connection high tension voltage sampling loop, high-tension current sampling loop, get resource loop, voltage regulation unit, data and process metering units, display unit, communication unit and clock, the communication module wireless connections of communication unit and main website.
The sensor type high tension electricity energy table arranged on the total loop point of power distribution network, each shunting point, load point that each is associated and each single-phase distal point, adopt Time synchronization technique to gather power consumption, utilize public network/ad-hoc network to form the electric quantity data cloud system, institute's image data is carried out to computing by the main website with concentrated collection analysis function, by operating side, control and show.
Wherein preferred version is:
The communication unit of described sensor type high tension electricity energy table comprises wireless transmission receiver module and RS485 communication chip, and the RS485 communication chip arranges to connect and comprises one or more in optical fiber, GPRS, wireless transparent transmission and carrier combination.Further increase multiple transfer function on the basis of original sensor type high tension electricity energy table, improve network adaptability.
The described resource loop of getting is the high-pressure source removing circuit.
The described resource loop of getting comprises solar panel and storage battery, and solar panel connects storage battery, and the output of storage battery connects voltage regulation unit.From utilizing the solar panel generating, reduce the device power supply cost.
Signals collecting mainly adopts the sensor type high tension electricity energy table, i.e. sensor type high-voltage electrical energy meter, and its metering method, comprise with current method and carry out voltage sampling, gathers the voltage signal u that is proportional to high side voltage U, after treatment, input electric energy metrical unit; The collection of I/i penetration type current sampling method is proportional to the current signal i of high voltage side current I, after treatment, and input electric energy metrical unit; Obtain voltage signal with I/P Power supply loop, after treatment, provide the electric energy metrical unit required power Vcc; The electric energy metrical unit carries out electric energy metrical to voltage signal u and the current signal i of input.I/i penetration type current sampling method is by one or two or many penetration type micro electric flow sensor, being made into a winding is the winding that single casket or punching can be born tested electric current, and secondary winding output adapts to mA level or the micro-current signal of μ A grade standard of microcomputer type, measurement or metering needs.Because the employing current method is measured high tension voltage, solved the electromagnetic resonance that electromagnetic transformer exists, high order harmonic component, switching overvoltage to problems such as safe operation threaten, meet the requirement of metering, measurement, monitoring and protection fully; Without ferro resonance, strong shock resistance; Avoided adopting the common voltage transducer of partial pressure type method of measurement to be subject to the impact of distributed capacitance over the ground larger, in the electric power system of different topology structure, the measure error deviation differs, and can not adapt to well the problem of the electric power system with multiple connection plan form; The needs that can adapt to grid automation, can provide and meet the multiple required voltage signal of metering, measurement, monitoring or protection system simultaneously, it measured and oversimplify; Supply power mode is simple and reliable energy-conservation, but its sampling mode not only energy-conservation, save installing space, save and make material, but also decrease measuring cost, environmental protection, be convenient to the mounting, commissioning and maintenance of metering, measurement or protective device, to improving power supply quality, played key effect; The safe operation coefficient is high: single turn overcurrent is saturated not to be burnt, and during overvoltage, not there will be the over-current phenomenon avoidance voltage transformer without the magnetic saturation phenomenon; The input unit of electric energy meter does not have the copper-manganese shunt resistance, has thoroughly solved the problem of burning table tail.Therefore signals collecting of the present utility model can adapt to various working, and the investment construction is few, and little, the power consumption of error own is little.
The beneficial effect that the line loss of the utility model based on high-voltage electric energy meter surveyed and navigation system has is: rational deployment is used the sensor type high tension electricity energy table, form outside the beneficial effect itself brought, by globality optimal design and processing, utilize this system to realize:
1, by 6kV-35kV circuit line loss, surveying, locate, directly read electric flux, calculate output, need not calculate alternative resistance, avoid the misdata caused because of mutual inductor ratio, grasp real-time and accurately line loss situation and the variation thereof of distribution line, the sensor type high tension electricity energy table can make error unique determine and its precision high, can really realize that the science of line losses indices is determined;
2, strong adaptability, can meet the operating mode of all power distribution networks, and applied range, can get rid of the abnormal failure point, can greatly improve the line loss managerial skills, reduces the management line loss, reduces tax evasion electric weight phenomenon and metering mistake, for formulation fall damage measure provider to;
3, the investment construction is few, itself consumes energy little, improves the economic benefit of power supply enterprise.
The accompanying drawing explanation
Fig. 1 is electrical schematic diagram of the present invention;
The electrical principle block diagram that Fig. 2 is sensor type high tension electricity energy table of the present invention;
Fig. 3 is operating process block diagram of the present invention;
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
Embodiment 1:
As shown in Figure 1-Figure 3, main website, operating side and sensor type high tension electricity energy table form the electric quantity data cloud system by public network/ad-hoc network; The management platform that main website arranges communication module, data acquisition unit and consists of server, software systems, front end processor, the input of the output connection data collecting unit of communication module, the output connection server of data acquisition unit; The sensor type high tension electricity energy table arranged on the total loop point of topological structure power distribution network, each shunting point, load point that each is associated and each single-phase distal point, the sensor type high tension electricity energy table at least comprise electrical connection high tension voltage sampling loop, high-tension current sampling loop, get resource loop, voltage regulation unit, data and process metering units, display unit, communication unit and clock, the communication module wireless connections of communication unit and main website.Can be Wireless/wired the connection between a plurality of operators of operating side and management platform, login platform by web browser and operated.Management platform arranges conventional platform management.
Communication between sensor type high tension electricity energy table and main website can be both wireless, also can adopt data wire or optical cable to connect.
The high tension voltage sampling loop is the V/I/v voltage sampling loop arranged at the high-voltage load wire, the output connection data in V/I/v voltage sampling loop is processed the input of metering units, the output that data are processed metering units connects display unit, the high-tension current sampling loop is for to arrange I/i current sampling loop at the high-voltage load wire, the output connection data in I/i current sampling loop is processed the input of metering units, in the setting of high-voltage load wire by getting resource loop, rectification circuit, the supply unit that energy-storage units and voltage regulation unit form, getting resource loop is the input that I/P gets the output connection rectification circuit of resource loop, the output of rectification circuit connects the input of energy-storage travelling wave tube and voltage regulation unit, the output of voltage regulation unit connects the power end of electric energy metrical unit.
The first order arranges sensor type high tension electricity energy table (M0), the second level arranges n sensor type high tension electricity energy table (M1-Mn), the sensor type high tension electricity energy table 1 of each second level arranges n the 3rd utmost point sensor type high tension electricity energy table (M11-M1n) until sensor type high tension electricity energy table (Mnn) is set, the like, the single-phase low-voltage customer line that n level end is three-phase is provided with the penetration type electric energy meter of communication function also can the sensor type high tension electricity energy table.
The communication unit of sensor type high tension electricity energy table comprises wireless transmission receiver module and RS485 communication chip, and the RS485 communication chip arranges to connect and comprises one or more in optical fiber, GPRS, wireless transparent transmission and carrier combination.
Getting resource loop is that the high-pressure source removing circuit can be also to comprise solar panel and storage battery, and solar panel connects storage battery, and the output of storage battery connects voltage regulation unit.
Line loss actual measurement and localization method are: ultra-high-tension power transmission line connects the topological structure power distribution network formed with branched line, power distribution network is the n level structure, it is characterized in that: at the total loop point of power distribution network, each shunting point, the sensor type high tension electricity energy table arranged on the load point that each is associated and each single-phase distal point, adopt Time synchronization technique to gather power consumption, utilize public network/ad-hoc network to form the electric quantity data cloud system, institute's image data is carried out to computing by the main website with concentrated collection analysis function, control and show by operating side, comprise following concrete steps:
Step 1: at the total loop point of power distribution network, each shunting point, the sensor type high tension electricity energy table arranged on the load point that each is associated and each single-phase distal point, the sensor type high tension electricity energy table at least comprises the high tension voltage sampling loop of electrical connection, the high-tension current sampling loop, get resource loop, voltage regulation unit, data are processed metering units, display unit, communication unit and clock, directly gather the total loop point with time tag, each shunting point, the load point that each is associated and the voltage and current of each single-phase distal point, calculate electric energy data, connect main website by communication unit,
Step 2: between sensor type high tension electricity energy table, main website and operating side, utilize public network/ad-hoc network to form the electric quantity data cloud system, communications protocol is set;
Step 3: main website receives total loop point, each shunting point, load point that each is associated and the electric energy data of each single-phase distal point, locates abnormal loss point, and gets rid of;
Step 4: main website is calculated the line loss of the total loop o'clock of ultra-high-tension power transmission line to n level branched line online, calculates line loss rate, and answers the operating side request to export control.
For example calculate second level line loss=M0-(M1+M2 ... + Mn).The rest may be inferred.
The method of the abnormal loss point in location of step 3 can be common prior art, it can be also the electric energy data utilized on each grade of branched line, calculate the line loss rate between adjacent two-stage, line loss rate surpasses reasonable range of normal value, be judged to be and have abnormal loss point, calculate successively the line loss rate of this grade of branched line and next stage branched line, at each grade of branched line, search, the single-phase distal point of the single-phase low-voltage customer line of one-level to the last, determine and search abnormal loss point place branched line, check, get rid of abnormal loss point.Due to sensor type high tension electricity energy table itself, can gather the low-voltage single-phase electric energy.Abnormal loss point can be ground connection, breakdown fault point, can be also stealing, by calculating according to method, searches abnormal loss point, and convenient and swift, position is accurate, and speed is fast, and cost is low.
The sensor type high tension electricity energy table initiatively will be uploaded the electric quantity data cloud system with the electric energy data of time tag, be operated.The sensor type high tension electricity energy table can be set to collection signal, and metering obtains that the electric quantity data cloud system carries out that cloud storage, cloud are processed with directly uploading after the electric energy data of time tag, cloud transmission or the demonstration by main website/operating side etc.
The sensor type high tension electricity energy table is the direct electric energy data of the free label of file also, while carrying out line loss actual measurement or positioning action, the operator sends control command from operating side, and then upload the electric quantity data cloud system from the memory read data of sensor type high tension electricity energy table, operated.
The server framework of the main website of mentioning in the utility model and software system function can pass through program setting, by the professionals such as common computer and Electrical Engineer are grasped.
Claims (4)
1. line loss actual measurement and the navigation system based on high-voltage electric energy meter, is characterized in that: comprise that main website, operating side and sensor type high tension electricity energy table form the electric quantity data cloud system by public network/ad-hoc network;
Main website arranges communication module, data acquisition unit and comprises the management platform of server, the input of the output connection data collecting unit of communication module, the output connection server of data acquisition unit;
The sensor type high tension electricity energy table arranged on the total loop point of topological structure power distribution network, each shunting point, load point that each is associated and each single-phase distal point, the sensor type high tension electricity energy table at least comprise electrical connection high tension voltage sampling loop, high-tension current sampling loop, get resource loop, voltage regulation unit, data and process metering units, display unit, communication unit and clock, the communication module wireless connections of communication unit and main website.
2. the line loss based on high-voltage electric energy meter according to claim 1 is surveyed and navigation system, it is characterized in that: the communication unit of described sensor type high tension electricity energy table comprises wireless transmission receiver module and RS485 communication chip, and the RS485 communication chip arranges to connect and comprises one or more in optical fiber, GPRS, wireless transparent transmission and carrier combination.
3. the line loss based on high-voltage electric energy meter according to claim 1 is surveyed and navigation system, and it is characterized in that: the described resource loop of getting is the high-pressure source removing circuit.
4. the line loss based on high-voltage electric energy meter according to claim 1 is surveyed and navigation system, and it is characterized in that: the described resource loop of getting comprises solar panel and storage battery, and solar panel connects storage battery, and the output of storage battery connects voltage regulation unit.
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| CN2011205568060U CN202957659U (en) | 2011-12-28 | 2011-12-28 | Line loss actual measurement and positioning system based on high voltage electric energy meter |
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| CN2011205568060U CN202957659U (en) | 2011-12-28 | 2011-12-28 | Line loss actual measurement and positioning system based on high voltage electric energy meter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409978A (en) * | 2014-12-01 | 2015-03-11 | 国网上海市电力公司 | Circuit microcurrent query energy consumption reduction system of power distribution cabinet |
| CN106711995A (en) * | 2015-07-29 | 2017-05-24 | 成都鼎桥通信技术有限公司 | Method and device for determining cause of abnormal loss |
| CN113468729A (en) * | 2021-06-15 | 2021-10-01 | 国网湖南省电力有限公司 | Method and system for measuring and calculating operation errors of electric power station metering device without calibration mode |
| CN113985204A (en) * | 2021-10-27 | 2022-01-28 | 国网陕西省电力公司铜川供电公司 | Low-voltage line loss segmented supervision method |
| CN114113903A (en) * | 2021-11-30 | 2022-03-01 | 广东电网有限责任公司 | System and method for positioning line loss of distribution network line |
| CN114779018A (en) * | 2022-05-18 | 2022-07-22 | 安徽因赛特新能源科技有限公司 | Detection system and method based on circuit loss calculation |
-
2011
- 2011-12-28 CN CN2011205568060U patent/CN202957659U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409978A (en) * | 2014-12-01 | 2015-03-11 | 国网上海市电力公司 | Circuit microcurrent query energy consumption reduction system of power distribution cabinet |
| CN106711995A (en) * | 2015-07-29 | 2017-05-24 | 成都鼎桥通信技术有限公司 | Method and device for determining cause of abnormal loss |
| CN106711995B (en) * | 2015-07-29 | 2019-05-14 | 成都鼎桥通信技术有限公司 | The determination method and device of abnormal wear reason |
| CN113468729A (en) * | 2021-06-15 | 2021-10-01 | 国网湖南省电力有限公司 | Method and system for measuring and calculating operation errors of electric power station metering device without calibration mode |
| CN113985204A (en) * | 2021-10-27 | 2022-01-28 | 国网陕西省电力公司铜川供电公司 | Low-voltage line loss segmented supervision method |
| CN114113903A (en) * | 2021-11-30 | 2022-03-01 | 广东电网有限责任公司 | System and method for positioning line loss of distribution network line |
| CN114779018A (en) * | 2022-05-18 | 2022-07-22 | 安徽因赛特新能源科技有限公司 | Detection system and method based on circuit loss calculation |
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