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| Analysis of frequency characteristics of water hammer effect compensatedby wind power frequency modulation |
| DOI：10.19783/j.cnki.pspc.220534 |
| Key Words:asynchronous networking wind power FM water hammer effect frequency modulation index |
| Author Name | Affiliation | | ZHU Bo | 1. Kunming University of Science and Technology, Kunming 650051, China
2. Yunnan Electric Power Test &
Research Institute (Group) Co., Ltd., Kunming 650217, China | | SHU Hongchun | 1. Kunming University of Science and Technology, Kunming 650051, China
2. Yunnan Electric Power Test &
Research Institute (Group) Co., Ltd., Kunming 650217, China | | WU Shuijun | 1. Kunming University of Science and Technology, Kunming 650051, China
2. Yunnan Electric Power Test &
Research Institute (Group) Co., Ltd., Kunming 650217, China | | HUANG Kehao | 1. Kunming University of Science and Technology, Kunming 650051, China
2. Yunnan Electric Power Test &
Research Institute (Group) Co., Ltd., Kunming 650217, China | | SUN Shiyun | 1. Kunming University of Science and Technology, Kunming 650051, China
2. Yunnan Electric Power Test &
Research Institute (Group) Co., Ltd., Kunming 650217, China | | DENG Han | 1. Kunming University of Science and Technology, Kunming 650051, China
2. Yunnan Electric Power Test &
Research Institute (Group) Co., Ltd., Kunming 650217, China |
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| Abstract:Water turbines account for a large proportion of energy in the Yunnan power grid. To solve the problem of power inversion caused by the water hammer effect of the turbine, this paper presents an analysis method of compensating the effect by considering the frequency modulation characteristics of wind power. First, a simple systematic mathematical model including wind, water, network and load is established. Then the algebraic differential and systematic network equations corresponding to the hydraulic turbine and its frequency modulation strategy, the wind turbine and its frequency modulation strategy are obtained by the direct current power flow method. Then linearization is carried out. The frequency domain analytical expression of the frequency response of the turbine and wind turbine grid connected nodes under load disturbance is derived. The influence of frequency modulation control parameters on the system frequency is analyzed according to an analytical formula. Finally, the validity and feasibility of the wind turbine compensating the water hammer effect of hydraulic turbine are verified by a simulation analysis of the two-machine system and the actual power grid.This work is supported by the Key Project of National Natural Science Foundation of China (No. 52037003).
asynchronous networking; wind power FM; water hammer effect; frequency modulation index |
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