A data synchronous framer for independent metering system of digital substation
An independent metering and data synchronization technology, applied in the transmission system, measuring electrical variables, instruments, etc., to achieve the effect of promoting, enhancing independence and reliability, and improving accuracy
Active Publication Date: 2017-07-28
GUIZHOU POWER GRID CO LTD
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Problems solved by technology
[0006] The proposal of the present invention solves the problem of centralized data forwarding in the design of an independent metering system in the construction of digital substations, paves the way for the construction of digital substations, and greatly promotes its promotion
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[0014] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0015] Such as figure 2 As shown, the electronic current transformer and electronic voltage transformer of the present invention convert the current and voltage of the power system into digital signal output; the digital signals measured by the electronic current transformer and electronic voltage transformer are transmitted to the data synchronization branch Framer; data synchronous framer processes the received digital signal synchronously, packs the relevant data, and transmits the packed data to the electric meter, which completes the measurement of electric energy.
[0016] and figure 1 Compared with the prior art shown, the digital signals measured by the electronic current transformer and electronic voltage transformer of the present invention do not pass through the existing merging unit, so that the independen...
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The invention relates to a data synchronous frame splitter for an independent metering system of a digital substation, which includes a management control bus, a data bus, a switch input module, a processor module, and a signal input module. The signal input module receives interval current and voltage input signals, and passes Data is transmitted between the data bus and the processor module, the switch input module receives the switch position input contact signal, and transmits data between the management control bus and the processor module, the processor module re-synchronizes the received signal, and the synchronized The data is packaged and forwarded to the meter through the Ethernet port. The invention solves the problem of centralized data forwarding in the design of an independent metering system in the construction of a digital substation, can significantly improve the accuracy of electric energy metering, enhances the independence and reliability of electric energy collection, and facilitates the management of operating personnel.
Description
technical field [0001] The invention relates to the design of a data synchronous frame divider of an independent metering system in the construction of a digital power grid. Background technique [0002] In recent years, with the application of the IEC 61850 standard and the use of a large number of digital equipment, digital substations have been widely used in engineering practice. Like conventional substations, digital substations also have the need for electric energy metering. As the basis of power grid company's revenue, metering plays an important role. [0003] The existing digital substation metering systems designed by various manufacturers and in operation all use the mode of transformer + merging unit output signal sampling + ammeter. The transformer data is output to the merging unit, and the merging unit is required to implement integration, angle ratio difference correction, synchronization and other processing, and then re-sampled and distributed to protect...
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IPC IPC(8): G01R22/10H04L29/06
Inventor 张秋雁肖震徐宏伟
Owner GUIZHOU POWER GRID CO LTD