VOLTAGE AND FREQUENCY RESPONSE OF SMALL HYDRO POWER PLANT IN GRID CONNECTED AND ISLANDED MODE

被引：0
|
作者：
Maina, Duncan Kaniaru [1 ]
Sanjari, Mohammad Javad [1 ]
Nair, Nirmal-Kumar C. [1 ]
机构：
[1] Univ Auckland, Dept Elect & Comp Engn, Auckland, New Zealand
来源：
2018 AUSTRALASIAN UNIVERSITIES POWER ENGINEERING CONFERENCE (AUPEC) | 2018年
关键词：
Excitation Limiters; Loading Scenarios; PI Tertiary Control; Small Hydro Power Plant; Turbine-Governor; OVEREXCITATION LIMITERS;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Hydro-based power is gaining more interests as the penetration level of small-scale hydro power plants are being increased to the medium voltage network. This paper investigates the performance of a single unit small hydropower plant in both grid-connected and islanded operation. The overexcitation and volt/hertz excitation limiters have been included in the study to compare their responses in both modes of operation. The plant is evaluated under different loading scenarios considering both resistive and inductive loads. A PI tertiary control for speed reference setting in islanded operation is introduced in the governor to enable regaining of 50 Hz frequency after load changes. The results obtained from the simulation study show the importance and difference of analysing different loading scenarios both in grid-connected and island modes. Also, the inclusion of PI control in governor aids in returning the frequency to its nominal value.
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页数：7
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