Direct-current comprehensive measurement control unit

Abstract

The invention discloses a direct-current comprehensive measurement control unit. The direct-current comprehensive measurement control unit comprises a CPU operation loop, a direct current analog quantity collection loop, an alternating current analog quantity collection loop, a switching value input loop, a relay output loop and a communication loop; the direct current analog quantity collection loop, the alternating current analog quantity collection loop and the switching value input loop are connected to the input end of the CPU operation loop, and the relay output loop and the communication loop are connected to the output end of the CPU operation loop; the communication loop comprises an upper computer communication loop and a lower computer communication loop, the upper computer communication loop uploads collected information and results obtained after processing to an upper computer of the direct-current comprehensive measurement control unit, and the lower computer communication loop collects information of a lower computer of the direct-current comprehensive measurement control unit and then sends the information to the CPU operation loop for judgement processing. The direct-current comprehensive measurement control unit is high in system integration degree and convenient to maintain; differential input is adopted, data is stable, and the capacity of resisting disturbance is high.

Description

technical field [0001] The invention relates to the technical field of intelligent direct current power supply of electric power system, in particular to a direct current comprehensive measurement control unit. Background technique [0002] At present, the DC integrated measurement control unit on the market is only a single control unit, which is inconvenient to use, cumbersome and complicated to install, and difficult to debug; there is little communication information, and the communication module needs to be expanded. [0003] When the DC integrated measurement control unit performs lower-level communication, it often uses a communication management unit, also known as a DPU, which has multiple downlink communication interfaces and one or more uplink network interfaces, and connects all intelligent monitoring / protection devices in a substation After sorting and summarizing the communication data, it will be sent to the upper master station system in real time to complete...

AI Technical Summary

Problems solved by technology

[0004] However, the structure of the communication management machine is complex and requires special management and maintenance, which brings inconvenience to the on-site operation; therefore, this field urgently needs a DC integrated measurement control with both upper computer communication and lower computer communication functions unit

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