Simulation and Consideration of Hydropower Units Operating In Isolated Grid

2018 4th International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Wang, Peijie^1 ; Chen, Hua^2 ; Yu, Siyu^1 ; Cao, Linning^3

Liaoning Pushi He Pumped Storage Co. Ltd., Dandong

118216, China^1

Jiangxi Provincial Design and Research Institute of Water Conservancy and Hydropower, Nanchang

330029, China^2

College of Energy and Electric Engineering, Hohai University, Nanjing

211100, China^3

关键词: Controlling strategies;    Design and operations;    Different frequency;    Frequency characteristic;    Hydropower stations;    Isolated networks;    Operation characteristic;    Turbine governors;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/252/3/032056/pdf
DOI  :  10.1088/1755-1315/252/3/032056

来源: IOP

【 摘 要 】

The Belt and Road Initiative enables China's hydropower industry to go out. In order to improve the qualities of the design and operation of hydropower units in Asia and Africa, the reliability of the isolated grid operation should be considered. A simulation model for the typical operation of hydropower units is established. The influence of flow inertia time constant and unit inertia time constant on the operation characteristics of isolated network is analyzed. It is pointed out that the inertia ratio of units should be reduced as much as possible in the design process of hydropower stations. Based on the frequency characteristics of hydropower units under different frequency dead zone, an improved controlling strategy of turbine governor is proposed to provide technical support for the operation of hydropower units in isolated grid.