Metering method of settlement electric quantity for power plant
A technology of electricity measurement and measurement method, which is applied in the measurement of electrical variables, measuring devices, instruments, etc., can solve the problems of inaccurate electricity measurement in power plant grid settlement and grid settlement, and achieve reliable design principles, low cost, and guaranteed accuracy. Effect
Pending Publication Date: 2022-03-25
STATE GRID SHANDONG ELECTRIC POWER COMPANY RIZHAOPOWER SUPPLY
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[0005] The purpose of the present invention is to provide and design a measurement method for power plant billing electricity in order to solve the problem of inaccurate measurement of actual grid settlement electricity and grid settlement electricity in the power plant due to the existence of cross-over electricity in the prior art. There are technical problems
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[0035] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.
[0036] The power plant 1 includes a station terminal 11 and several electricity meters 12, each electricity meter 12 corresponds to a specific number, the station terminal 11 sends an instant freeze command to all electricity meters 12 at the same time, and the station terminal 11 reads all electricity The current instantaneous frozen data of the meter 12 is stored separately by number. Among them, when the station terminal 11 monitors the power flow of the outgoing line through the monitoring module installed on each outgoing line, it will broadcast and send it immediately through the RS485 communication bus Instantaneous freeze command, notify the subordinate power meter 12 to freeze the data, the instanta...
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The invention relates to a metering method of settlement electric quantity for a power plant, which belongs to the technical field of electric energy metering and comprises the following steps: acquiring load flow direction and forward and reverse electric energy data of each electric quantity meter during instantaneous freezing; a load power flow direction analysis module of the plant station terminal judges whether crossing electric quantity occurs in the power plant or not according to the collected load power flow direction; if yes, integrating the average power and the average ride-through power of the electrical load in any time period, and subtracting the average power and the average ride-through power; if the difference value is positive, taking the difference value as the power consumption of the network; if the difference value is negative, taking the difference value as the on-grid electric quantity; according to the method, not only is the accuracy of the final metering electric quantity of the power plant ensured, but also the wiring of the power supply plant does not need to be transformed, the operation is simple, and the cost is low.
Description
technical field [0001] The invention belongs to the technical field of electric energy metering, and in particular relates to a metering method for billing electricity used in power plants. Background technique [0002] According to the requirements of electric power regulations, the settlement gateway measurement point of the power plant is usually set on the outlet side of the power plant, that is, the boundary of the property rights of the power facilities; cannot cancel each other out, so they need to be measured separately. [0003] In order to realize the separate measurement of on-grid electricity and grid consumption, an outlet gateway electrical measurement module is usually installed on the outlet side of the power plant to measure the accumulated forward and reverse active energy as the grid-connected and grid-used electricity respectively; in the prior art, the According to the actual meter reading method, that is, when the power plant is using electricity, imme...
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IPC IPC(8): G01R22/06
CPCG01R22/06
Inventor 陈洋宫池玉刘旭卢兴旺张旭潘广旭厉运达李忠玉满阳阳杜善慧许晓华马小伟王祥法万莉刘金
Owner STATE GRID SHANDONG ELECTRIC POWER COMPANY RIZHAOPOWER SUPPLY