A multi-optical port digital electric energy meter verification system and method based on power grid simulation
A power grid simulation and electric energy meter technology, applied in the direction of measuring electric variables, instruments, measuring devices, etc., can solve the problem of lack of calibration equipment and methods for multi-optical digital electric energy meters, and achieve the effect of improving reliability
Active Publication Date: 2019-07-19
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +3
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Problems solved by technology
[0005] The invention provides a multi-optical port digital electric energy meter verification system and method based on power grid simulation, which solves the problem that the current multi-optical port digital electric energy meter lacks verification equipment and methods
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[0031] The present invention will be further described below. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0032] As shown in 2, in order to measure the electric energy of metering point 1 on the high-voltage side, a multi-optical digital electric energy meter is installed. According to the circuit theory, when metering point 1 on the high-voltage side calculates electric energy, the voltage is taken from the bus voltage and paralleled, and the current is the line CT1 and The sum current of inner bridge CT0.
[0033] Such as image 3 As shown, the multi-optical port digital electric energy meter verification system based on power grid simulation of the present invention includes a host computer, a host computer, four slave machines, a time synchronization system, and a digital electric energy meter calibrator.
[0034] Among them, the upper co...
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The invention discloses a multi-port digital electric energy meter calibration system and a method based on power grid simulation. The calibration system comprises a principal computer, a master computer, slave computers, a time synchronization system, and a digital electric energy meter calibrator. A power grid software simulation technology and an electric energy meter calibration technology are combined. A voltage / current digital signal closer to the actual condition is generated through power grid software simulation running on the principal computer. Then, the master computer calculates out sampling data by interpolating the digital signal, and sends the sampling data to the multiple slave computers. The slave computers frame the data according to the frame format specified by a sampling value message, and send the data out. Finally, the error of a tested multi-port digital electric energy meter is tested using the digital electric energy meter calibrator. Visual configuration of a multi-port digital electric energy meter application scene is realized. Measurement error test of a multi-port digital electric energy meter under the condition of asynchronous sampling is truly realized for the first time.
Description
technical field [0001] The invention relates to a multi-optical port digital electric energy meter calibration system and method based on power grid simulation, belonging to the field of smart grid equipment testing. Background technique [0002] With the development of smart grid, the number and scale of digital substations are increasing, and digital energy metering technology is widely used. Compared with the traditional electric energy metering system, the digital electric energy metering system has fewer error links, and the wiring of the metering secondary circuit is simple, which meets the requirements of informatization and digitization. Ideally, the whole station equipment of digital substation is controlled by the clock system, all the sampled data are networked through the switch, and different application devices obtain the required data from the switch. Among them, the energy metering scheme is as follows: figure 1 shown. However, in actual operation, synchron...
Claims
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IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 程含渺纪峰田正其徐晴段梅梅鲍进吴伟将夏国芳白静芬
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST