Small hydropower safety monitoring system and monitoring method for safe and stable operation of power grid

Abstract

A small hydropower safety monitoring system for safe and stable operation of the power grid, including a monitoring unit and a data transmission control unit, characterized in that: the monitoring unit and the data transmission control unit are connected through the Internet two-way data communication, and the data transmission control unit is connected to the small hydropower station Between the output terminal and the grid access terminal, the data transmission control unit will collect the operation signal of the small hydropower station connected to the grid, and the monitoring unit will send corresponding remote control instructions to the data transmission control unit according to the collected signal, and remotely control the data transmission control unit. control. The invention can detect the operation data of the small hydropower station in real time, understand the operation status of the small hydropower station, realize the monitoring of the small hydropower station, monitor conveniently, improve the efficiency of power supply management, and use wireless communication for data communication, which not only realizes remote control, but also reduces In order to avoid the cost brought by erecting optical cables or communication cables, it is suitable for the monitoring of small hydropower stations with large quantity, small capacity and scattered 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...

AI Technical Summary

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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