Intelligent management and control device and system for small hydropower stations

Abstract

The invention discloses an intelligent management and control device and system for small hydropower stations. The intelligent management and control device comprises a microprocessor, a communicationmodule, a wireless module, a voltage acquisition module, a current acquisition module, a grid-connected switch state acquisition module, a tripping loop monitoring module, a voltage loss and communication abnormality recording module, an operation and action recording module, a grid-connected switch control module and an electric quantity abnormality recording module. The communication module, the wireless module, the voltage acquisition module, the current acquisition module, the grid-connected switch state acquisition module, the tripping loop monitoring module, the voltage loss and communication abnormality recording module, the operation and action recording module, the grid-connected switch control module and the electric quantity abnormality recording module are connected with the microprocessor. According to the intelligent management and control device and system, the voltage, frequency and other electric quantity indexes and switching values of the small hydropower station can be comprehensively monitored; when the voltage or frequency exceeds a tripping constant value, automatic tripping is conducted and current data are recorded and stored as evidences, so that a problem that responsibility cannot be clarified is solved. On-line monitoring is realized by cooperating with the superior monitoring system, a fault is discovered timely and remote active control is carried out. Compared with the traditional on-site patrol, the intelligent management and control device and system have the following advantages: lots of manpower and commuting time are saved; the sending-out capability of the small hydropower station is improved; and the power utilization safety of users on a line is guaranteed.

Description

technical field [0001] The invention relates to the technical field of power generation equipment, in particular to a small hydropower intelligent management and control device and system. Background technique [0002] There is abundant rain in southern my country, and many small hydropower stations have been built in mountainous areas. Among them, there are a large number of small units with an installed capacity of tens to hundreds of kilowatts. The installed capacity is small, the number is large, and the locations are scattered. Most of these units have no access to the Internet. Instead, use the existing 10kV power supply line to access the Internet, forming a situation where the Internet line and ordinary users share the 10kV line. [0003] The connection line of small hydropower goes deep into the mountains, and there are many branch lines, which are prone to failure due to various factors, which will cause the main output switch of the connection line in the substatio...

AI Technical Summary

Problems solved by technology

However, from the perspective of actual operation results, the installation of an overvoltage tripping device cannot solve the existing problems. First, due to the failure to solve the monitoring and storage records of abnormal power consumption and operation action records, after the overvoltage of the small hydropower station is cut off, both parties have no way to deal with economic losses. Responsibilities are clarified, and intelligent monitoring and online monitoring have not been realiz

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