System for monitoring transforming plant DC

Abstract

The present invention discloses a transformer DC monitoring system, which consists of a far-end measurement control unit, an optical fiber channel input unit, an optical fiber channel, a server, a workstation and a client. A prepositive computer is arranged between the optical fiber channel input unit and the optical fiber channel; the prepositive computer consists of a main prepositive computer, a deputy prepositive computer and a dual-computer switching device; the dual-computer switching device is connected with the optical fiber channel input unit; the main prepositive computer and the deputy prepositive computer are both connected with the dual-computer switching device; the communication mode between the main prepositive computer and the deputy prepositive computer adopts GPS wireless mode; data monitoring, parameter setting, data analog, data pre-treatment and data transmission computer programs are arranged in the main prepositive computer and the deputy prepositive computer in advance. The transformer DC monitoring system makes full use of existing equipment to establish a long-distance centralized DC monitoring system which is applicable to various substations and improve the comprehensive monitoring level, openness and expandability of the system and the stability and reliability of the monitoring. The transformer DC monitoring system is used for power systems.

Description

technical field [0001] The invention relates to the technical field of comprehensive automation management of electric power systems, in particular to a DC monitoring system for substations. Background technique [0002] The DC operating power system is one of the indispensable secondary equipment in the substation, and its reliability directly affects the safe and reliable operation of the equipment in the substation. The application of a large number of microcomputer protection devices and comprehensive automation equipment, as well as the adoption of valve-regulated sealed lead-acid batteries, have higher and higher requirements for DC operating power supplies. However, the current DC management and operation are basically still the original management methods and models, and it is difficult to meet the requirements of integrated automation and unattended stations for DC systems. The current operation monitoring is all in the dispatching center or centralized control sta...

AI Technical Summary

Problems solved by technology

However, when establishing a set of DC remote monitoring and management system to monitor the DC operating power supplies of many substations or substations, it is necessary to ensure the efficiency of network data transmission, so as to ensure the timeliness of monitoring. When there are too many online data upload nodes, the amount of data When it is too large, the tasks of online data processing and transmission nodes are heavy, which often causes delays in data transmission. If there is a failure of online data processing and transmission nodes, it will cause the data of all data upload nodes to fail to reach the centralized monitoring center

Finally, most of the DC equipment in the current substation is equipped with battery inspection and insulation detection devices. These devices and devices themselves have digital interfaces, but the equipment in each substation may come from different manufacturers, so integrating and transmitting these data has become an urgent problem to be solved. problem; at the same time, in the substation using high-frequency switching power supply, the data collection in the station mainly depends on the microcomputer DC monitor used in the original system; it can be seen that how the function of the microcomputer DC monitor used in the original system is too weak or does not have the microcomputer DC monitor It is also a problem to be solved to realize remote centralized monitoring of DC

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