Electrical transformer district electricity meter dynamic three-phase single phase line loss acquisition method

An acquisition method and platform technology, applied in distribution line transmission system, measurement of electrical variables, electrical signal transmission system, etc., can solve problems such as low efficiency, achieve convenient technical means, improve operation management level, and promote in-depth development Effect

Inactive Publication Date: 2016-04-13
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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Problems solved by technology

[0003] At present, it is usually used to determine the phase of the electric meter by using the card meter of the station area, which requires at least two people to cooperate with the operation, and the efficiency is low

Method used

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  • Electrical transformer district electricity meter dynamic three-phase single phase line loss acquisition method

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Embodiment

[0024] The electric energy acquisition system provides a technical means for the automatic identification of electric meters in the station area. In the domestic acquisition system, the downlink of the concentrator mainly adopts the power line carrier communication method, and the carrier signal is transmitted through the phase line, so when the concentrator sends the carrier signal on a certain phase line, only the ammeter on the phase line can reply carrier signal. Since the concentrator itself knows the phases in advance, the concentrator is then able to determine the phase of the meter. Based on this method, domestic carrier chip manufacturers have developed a carrier technology for phase-line voltage zero-crossing communication, which automatically obtains the phases of all meters in the station area. The phase information will be sent to the meter side through the power line carrier and displayed on the meter.

[0025] The carrier signal of the concentrator is sent in ...

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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 [0001] The invention relates to a method for calculating line loss, in particular to a method for acquiring dynamic three-phase phase-separated line loss of electric meters in station areas. Background technique [0002] The implementation of the electric energy acquisition system has realized the reading of the frozen data of all electric energy meters in a station area. Combined with the assessment table of the station area, the line loss calculation of the low-voltage distribution network station area can be realized. This line loss is the comprehensive line loss of the three phases. In practical applications, if the line loss of each phase and the energy meter on each phase line can be obtained, it will provide great help for line loss management and customer power consumption management. State Grid Q / GDW376.1-2009 "Communication Protocol for Electric Power User Information Collection System: Communication Protocol between Master Station and Collection T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C19/12H04B3/54G01R19/175G01R31/08
CPCG08C19/12G01R19/175G01R31/086H04B3/54
Inventor 费丹雄张洪永
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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