CN105488994A - Electrical transformer district electricity meter dynamic three-phase single phase line loss acquisition method - Google Patents
Electrical transformer district electricity meter dynamic three-phase single phase line loss acquisition method Download PDFInfo
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- CN105488994A CN105488994A CN201510880856.7A CN201510880856A CN105488994A CN 105488994 A CN105488994 A CN 105488994A CN 201510880856 A CN201510880856 A CN 201510880856A CN 105488994 A CN105488994 A CN 105488994A
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- phase
- line loss
- concentrator
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- platform district
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/12—Electric signal transmission systems in which the signal transmitted is frequency or phase of ac
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/175—Indicating the instants of passage of current or voltage through a given value, e.g. passage through zero
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
Abstract
The invention relates to an electrical transformer district electricity meter dynamic three-phase single phase line loss acquisition method. The method comprises the following steps: 1, a three-phase rating table is arranged in every electrical transformer district, and three phase components through three-phase rating tables are obtained and are transmitted to a concentrator; 2, the practical phase of a carrier wave from all single phase measurement points is acquired by an electrical transformer district router and is transmitted to the concentrator; 3, an electricity energy acquisition main station request a communication protocol and a measurement point number to the concentrator, and the electrical transformer district rating tables, all the single phase user tables and the electrical transformer district three-phase table electricity power information are acquired from the concentrator; and 4, the line loss of every single phase is calculated through using a single phase line loss formula according to the acquired electrical transformer district rating tables, all the single phase user tables and the electrical transformer district three-phase table electricity power information. Compared with the prior art, the method disclosed in the invention has the advantages of accurate calculation and convenient querying.
Description
Technical field
The present invention relates to a kind of line loss calculation method, especially relate to a kind of platform district ammeter dynamic three-phase separate phase line loss acquisition methods.
Background technology
The enforcement of Electric Energy Acquisition System, achieves the copy reading of all electric energy meter freezing data in a Ge Tai district.In conjunction with platform district table of merit rating, the line loss calculation in low-voltage distribution network platform district can be realized.This line loss is the comprehensive line loss of three-phase, and in actual applications, if obtain the electric energy meter in each phase place line loss and each phase line, will provide huge help to Controlling line loss and client's management of power use.Measurement point phase information is contained in state's net Q/GDW376.1-2009 " power user power consumption information acquisition system communication protocol: main website and acquisition terminal communication protocol " and explanation of compilation, Q/GDW376.2-2009 " power user power consumption information acquisition system communication protocol: concentrator Local Communication Module interface protocol " and explanation of compilation, in conjunction with the carrier communication communicated based on zero passage, can effectively obtain electric energy meter phase information, realize dynamic three-phase separate phase line loss calculation.
At present, usually adopt platform to distinguish card instrument determination ammeter phase place, need at least two people's compounding practices, efficiency is low.
Summary of the invention
Object of the present invention is exactly provide a kind of to overcome defect that above-mentioned prior art exists and calculate accurately, be convenient to the platform district ammeter dynamic three-phase separate phase line loss acquisition methods inquired about.
Object of the present invention can be achieved through the following technical solutions:
A kind of platform district ammeter dynamic three-phase separate phase line loss acquisition methods, comprises the following steps:
1) in each district, three-phase table of merit rating is installed, obtains three-phase component electric energy by three-phase table of merit rating and send concentrator to;
2) platform district router obtains the actual phase of carrier wave from each individual phase measurement point, and sends concentrator to;
3) generated energy acquisition main website is to concentrator request communication protocol and measurement period, obtains platform district table of merit rating, each phase-splitting Hu Biaohetai district three-phase meter energy information from concentrator;
4) according to the platform district table of merit rating obtained, each phase-splitting family table, platform district three-phase meter energy information, phase-splitting line loss formulae discovery is adopted to go out the line loss per unit of each phase-splitting.
Described communication protocol is main website and acquisition terminal communication protocol in power user power consumption information acquisition system.
Described phase-splitting line loss formula is:
PLoss(A)＝(P(TotalA)-∑P(MAi)-∑P(SubAm))/P(TotalA)
PLoss(B)＝(P(TotalB)-∑P(MBi)-∑P(SubBm))/P(TotalB)
PLoss(C)＝(P(TotalC)-∑P(MCi)-∑P(SubCm))/P(TotalC)
Wherein, PLoss (A), PLoss (B), PLoss (C) is respectively A, B, C phase line loss per unit, P (TotalA), P (TotalB), P (TotalC) is respectively platform district table of merit rating A, B, C phase component electric energy, P (MAi) is the i-th single-phase family, family table electric energy on A phase circuit, P (MBi) is single-phase family, the jth family on B phase circuit table electric energy, P (MCi) is single-phase family, the kth family on c phase circuit table electric energy, P (SubAm), P (SubBm), P (SubCm) is respectively m three-phase meter A in platform district, B, C phase component electric energy.
Described step 4) in energy information comprise phase information, ammeter information and energy information.
Described concentrator obtains the information of three-phase table of merit rating and router by the communication mode of RS485.
Compared with prior art, the present invention has the following advantages:
The present invention is along with the promotion and implementation of Electric Energy Acquisition System and widespread use, in conjunction with the zero crossing carrier communication technology, the dynamic calculation of three-phase separate line loss can be realized, thus instruct research and the formulation of loss-reducing and electricity-saving scheme targetedly, effectively promote carrying out in a deep going way of loss-reducing and electricity-saving work, promote the operation and management level of Utilities Electric Co., further, the phase place that achievement in research can be applied in intelligent electric meter shows automatically, will provide more convenient technological means for power utility check.
Accompanying drawing explanation
Fig. 1 is Electric Energy Acquisition System platform plot structure figure in the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment:
Electric Energy Acquisition System is that the automatic identification of platform district ammeter provides technological means.In domestic acquisition system, the descending main employing power line carrier communication mode of concentrator, carrier signal is transmitted by phase line, and so when concentrator sends carrier signal in certain phase line, the ammeter only in this phase line could reply carrier signal.Because each phase place known in advance by concentrator itself, like this, concentrator just can determine the phase place of this ammeter.Based on the method, the domestic ZAP having had carrier chip producer to develop the communication of phases line voltage zero crossing, knows the phase place of all ammeters in platform district automatically.This phase information will be sent to ammeter end by power line carrier, and be presented on ammeter.
The carrier signal of concentrator is that phase-splitting sends within a differential period of each phase voltage near zero-crossing point, after the Carrier Node of ammeter receives carrier signal, is also carry out replying within a differential period of this phase voltage near zero-crossing point.Therefore, the sequential that concentrator is replied according to ammeter, just can determine the actual phase of this ammeter.
As shown in Figure 1, in a Ge Tai district, need to install three-phase platform district examination summary table, this summary table supports phase-splitting energy data.If three-phase meter in platform district supports phase-splitting energy data, then with each phase-splitting energy data for basis; If only have total electric energy, do not support phase-splitting electric energy, then according to total electric energy 1/3rd as the energy data of each phase-splitting.Power information acquisition system should be able to collect the energy information of platform district table of merit rating, the energy information of Nei Ge family, platform district table and place phase place thereof.Then the computing formula of platform differentiation phase line loss per unit is as follows:
PLoss(A)＝(P(TotalA)-∑P(MAi)-∑P(SubAm))/P(TotalA)
PLoss(B)＝(P(TotalB)-∑P(MBi)-∑P(SubBm))/P(TotalB)
PLoss(C)＝(P(TotalC)-∑P(MCi)-∑P(SubCm))/P(TotalC)
Wherein, PLoss (A), PLoss (B), PLoss (C) is respectively A, B, C phase line loss per unit, P (TotalA), P (TotalB), P (TotalC) is respectively platform district table of merit rating A, B, C phase component electric energy, P (MAi) is the i-th single-phase family, family table electric energy on A phase circuit, P (MBi) is single-phase family, the jth family on B phase circuit table electric energy, P (MCi) is single-phase family, the kth family on c phase circuit table electric energy, P (SubAm), P (SubBm), P (SubCm) is respectively m three-phase meter A in platform district, B, C phase component electric energy.
Realize the calculating that platform distinguishes phase line loss per unit, need concentrator to net Q/GDW376.1-2009 " power user power consumption information acquisition system communication protocol: main website and acquisition terminal communication protocol " and explanation of compilation and Q/GDW376.2-2009 " power user power consumption information acquisition system communication protocol: concentrator Local Communication Module interface protocol " and explanation of compilation in strict accordance with state and develop.Communication between main website and concentrator nets Q/GDW376.1-2009 " power user power consumption information acquisition system communication protocol: main website and acquisition terminal communication protocol " according to state and explanation of compilation is developed, between concentrator and route according to state net Q/GDW376.2-2009 (power user power consumption information acquisition system communication protocol: concentrator Local Communication Module interface protocol " and explanation of compilation exploitation.
The three-phase separate phase line loss wire examination method carrying out platform district is as follows:
(1) in each district, three-phase table of merit rating is installed, three-phase component electric energy in the data item of table of merit rating, should be comprised.
(2) concentrator is checked meter in process daily, and route returns to any one carrier wave of concentrator from nodal information, all comprises the actual phase of measurement point.
(3) Electric Energy Acquisition System main website is to 1 class data command F170 (centralized automatic meter-reading ammeter copy reading information) in concentrator request Q/GDW376.1-2009 " power user power consumption information acquisition system communication protocol: main website and acquisition terminal communication protocol " and explanation of compilation+measure period, comprises this measurement point actual phase in the carrier wave copy reading communication phase in return data item.
(4), after application system obtains platform district table of merit rating, each phase-splitting family table, platform district three-phase meter electric energy, above-mentioned formula is adopted just can to calculate the line loss per unit of each phase-splitting.
Along with the development of electrical network and the quick growth of power load, oneself becomes an important topic of modern electric business administration to do loss-reducing and electricity-saving work well.Line loss is the important indicator of Utilities Electric Co.'s internal examination and customer account management, the promotion and implementation of Electric Energy Acquisition System and widespread use, in conjunction with the zero crossing carrier communication technology, the dynamic calculation of three-phase separate line loss can be realized, thus instruct research and the formulation of loss-reducing and electricity-saving scheme targetedly, effectively promote carrying out in a deep going way of loss-reducing and electricity-saving work, promote the operation and management level of Utilities Electric Co..Next step, the phase place that achievement in research can be applied in intelligent electric meter shows automatically, will provide more convenient technological means for power utility check.
Claims (5)
1. a Zhong Tai district ammeter dynamic three-phase separate phase line loss acquisition methods, is characterized in that, comprise the following steps:
1) in each district, three-phase table of merit rating is installed, obtains three-phase component electric energy by three-phase table of merit rating and send concentrator to;
2) platform district router obtains the actual phase of carrier wave from each individual phase measurement point, and sends concentrator to;
3) generated energy acquisition main website is to concentrator request communication protocol and measurement period, obtains platform district table of merit rating, each phase-splitting Hu Biaohetai district three-phase meter energy information from concentrator;
4) according to the platform district table of merit rating obtained, each phase-splitting family table, platform district three-phase meter energy information, phase-splitting line loss formulae discovery is adopted to go out the line loss per unit of each phase-splitting.
2. a kind of platform district ammeter according to claim 1 dynamic three-phase separate phase line loss acquisition methods, is characterized in that, described communication protocol is main website and acquisition terminal communication protocol in power user power consumption information acquisition system.
3. a kind of platform district ammeter according to claim 1 dynamic three-phase separate phase line loss acquisition methods, is characterized in that, described phase-splitting line loss formula is:
PLoss(A)＝(P(TotalA)-∑P(MAi)-∑P(SubAm))/P(TotalA)
PLoss(B)＝(P(TotalB)-∑P(MBi)-∑P(SubBm))/P(TotalB)
PLoss(C)＝(P(TotalC)-∑P(MCi)-∑P(SubCm))/P(TotalC)
Wherein, PLoss (A), PLoss (B), PLoss (C) is respectively A, B, C phase line loss per unit, P (TotalA), P (TotalB), P (TotalC) is respectively platform district table of merit rating A, B, C phase component electric energy, P (MAi) is the i-th single-phase family, family table electric energy on A phase circuit, P (MBi) is single-phase family, the jth family on B phase circuit table electric energy, P (MCi) is single-phase family, the kth family on c phase circuit table electric energy, P (SubAm), P (SubBm), P (SubCm) is respectively m three-phase meter A in platform district, B, C phase component electric energy.
4. a kind of platform district ammeter according to claim 1 dynamic three-phase separate phase line loss acquisition methods, is characterized in that, described step 4) in energy information comprise phase information, ammeter information and energy information.
5. a kind of platform district ammeter according to claim 1 dynamic three-phase separate phase line loss acquisition methods, is characterized in that, described concentrator obtains the information of three-phase table of merit rating and router by the communication mode of RS485.
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| CN201510880856.7A CN105488994A (en) | 2015-12-03 | 2015-12-03 | Electrical transformer district electricity meter dynamic three-phase single phase line loss acquisition method |
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| CN201510880856.7A CN105488994A (en) | 2015-12-03 | 2015-12-03 | Electrical transformer district electricity meter dynamic three-phase single phase line loss acquisition method |
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Cited By (7)
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| CN106772499A (en) * | 2016-11-16 | 2017-05-31 | 湖南华烨智能通信技术股份有限公司 | A kind of method and system of automatic acquisition platform area topological diagram |
| CN107093061A (en) * | 2017-05-03 | 2017-08-25 | 国网江西省电力公司电力科学研究院 | Power distribution station power load distributing registration form automatic dynamic generation method based on big data |
| CN107526004A (en) * | 2017-07-24 | 2017-12-29 | 杭州华罡智能科技有限公司 | The taiwan area recognition methods of metering fault identification module |
| CN109212334A (en) * | 2018-09-27 | 2019-01-15 | 深圳友讯达科技股份有限公司 | Electric energy meter phase sequence identifies device and method |
| CN109212333A (en) * | 2018-09-27 | 2019-01-15 | 深圳友讯达科技股份有限公司 | Collector management electric energy meter phase sequence Home System and device |
| CN109374981A (en) * | 2018-09-26 | 2019-02-22 | 广东瑞信电力科技有限公司 | The line loss recognition methods of platform area, device, computer equipment and storage medium |
| CN113552527A (en) * | 2021-06-10 | 2021-10-26 | 杭州华春科技有限公司 | Multi-meter set line loss meter-setting device and line loss meter-setting method |
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Cited By (11)
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| CN106772499A (en) * | 2016-11-16 | 2017-05-31 | 湖南华烨智能通信技术股份有限公司 | A kind of method and system of automatic acquisition platform area topological diagram |
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| CN107526004A (en) * | 2017-07-24 | 2017-12-29 | 杭州华罡智能科技有限公司 | The taiwan area recognition methods of metering fault identification module |
| CN107526004B (en) * | 2017-07-24 | 2019-10-25 | 杭州华罡智能科技有限公司 | The platform area recognition methods of metering fault identification module |
| CN109374981A (en) * | 2018-09-26 | 2019-02-22 | 广东瑞信电力科技有限公司 | The line loss recognition methods of platform area, device, computer equipment and storage medium |
| CN109212334A (en) * | 2018-09-27 | 2019-01-15 | 深圳友讯达科技股份有限公司 | Electric energy meter phase sequence identifies device and method |
| CN109212333A (en) * | 2018-09-27 | 2019-01-15 | 深圳友讯达科技股份有限公司 | Collector management electric energy meter phase sequence Home System and device |
| CN109212334B (en) * | 2018-09-27 | 2021-10-12 | 深圳友讯达科技股份有限公司 | Phase sequence identification equipment and method for electric energy meter |
| CN109212333B (en) * | 2018-09-27 | 2021-10-12 | 深圳友讯达科技股份有限公司 | Phase sequence attribution system and device for managing electric energy meter by collector |
| CN113552527A (en) * | 2021-06-10 | 2021-10-26 | 杭州华春科技有限公司 | Multi-meter set line loss meter-setting device and line loss meter-setting method |
| CN113552527B (en) * | 2021-06-10 | 2024-03-22 | 杭州华春科技有限公司 | Multi-table set line loss table determining device and line loss table determining method |
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