Small hydropower station safety monitoring system for grid safe and stable operation and monitoring method for small hydropower station safety

Abstract

A small hydropower station safety monitoring system for grid safe and stable operation comprises a monitoring unit and a data transmission control unit and is characterized in that the monitoring unit is connected with the data transmission control unit through data of the internet in a double-way communicating mode; the data transmission control unit is connected between an output end of each small hydropower station and a grid connecting end; operation signals of the connected grid of each small hydropower station are collected by the data transmission control unit; corresponding remote control commands are sent to the data transmission control unit by the monitoring unit according to the collected signals, and remote control is conducted on the data transmission control unit. According to the small hydropower station safety monitoring system for grid safe and stable operation, operating data of the small hydropower stations are detected in real time, the operation conditions of the small hydropower stations are known, monitoring to the small hydropower stations is achieved, monitoring is convenient, and the efficiency of power supplying management is improved. Data communication is achieved in a wireless communicating mode, so that remote control is achieved, the cost brought by the erection of optical cables or communication cables is reduced, and the small hydropower station safety monitoring system for grid safe and stable operation is suitable for monitoring a large number of small hydropower stations with small capacity and dispersive layout.

Description

technical field [0001] The invention relates to a monitoring system, in particular to a small hydropower safety monitoring system and a monitoring method thereof. Background technique [0002] my country's small hydropower resources are very rich, with a developable capacity of 87 million kW, mainly distributed in remote rural areas and mountainous areas in southwest my country. These areas have complex terrain, sparsely populated areas, scattered loads and low demand. Due to the limitations of the geographical environment and technical conditions, while vigorously developing and utilizing the clean electric energy provided by small hydropower, the following problems surrounding the safety monitoring of small hydropower must be addressed to ensure the safe and stable operation of the power grid: [0003] 1) Under the background of separation of power plants and power grids, it is difficult to monitor the operating conditions of small hydropower units by the power grid in hy...

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Problems solved by technology

[0003] 1) Under the background of separation of power plants and power grids, it is difficult to monitor the operating conditions of small hydropower units by the power grid in hydropower stations. Their operating conditions are either neglected to be monitored, or they are only estimated based on the measurement data connected to the nearest substation to infer the operating status of small hydropower. In the absence of comprehensive and accurate operating data, it is difficult for the power grid to realize This is also the main reason why the voltage amplitude of private small hydropower access lines seriously exceeds the limit but is difficult to eradicate

[0004] 2) Small hydropower stations that pursue profit and lack monitoring bring huge hidden dangers to the safe and stable operation of the power grid. The impedance is large, the long-distance power transmission capacity of the distribution line is extremely limited, and the network loss is relatively high, which often leads to the embarrassment of these small hydropower units that are weakly connected to the grid during the wet season. The situation is even more serious. Under the background of the separation of power plants and power grids, in order to maximize the revenue of power generation, small hydropower stations lacking monitoring wantonly increase the terminal voltage of hydropower units to increase hydropower output, which seriously endangers the connection of small hydropower to the distribution network. Safe and stable operation of power grid

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