應用免疫演算法進行微型電網之低頻電驛參數設計與可靠度分析

Reliability Analysis and Parameter Design of Under-frequency Relay in Mircogrid Using Immune Algorithms

賴勇禎(Yong-Zhen Lai)

指導教授 ： 洪穎怡

中原大學/工學院/電機工程研究所/碩士(2013年)

https://doi.org/10.6840/cycu201300911

摘要

摘要
本論文針對一微型電網系統，設計其低頻電驛設定參數與規劃電池數量，當電力系統遇到嚴重擾動，如系統最大發電機組跳機時，以避免配電饋線不必要的跳脫與停電。另外，應用用戶型指標進行可靠度分析。可靠度模擬結果顯示，系統加裝儲能電池可減少用戶停電時間以及提高系統可靠度。
本文使用NEPLAN V5.5.0模擬軟體建立微型電網電力系統，探討其電力潮流分析，並模擬系統最大發電機組跳機之暫態穩定度分析與系統可靠度。利用混沌克隆演算法及處罰函數之概念，找出最適合系統的低頻電驛之參數設定，並針對不同期望值、族群及演算法進行討論。應用交談式多目標非線性規劃來設計多段低頻電驛參數與電池數量，求得微型電網系統之卸載量最小值與初始搖擺頻率最大值及最小電池數量與可靠度，以達到降低用戶端損失。

關鍵字

混沌克隆進化演算法 ； 微型電網 ； 再生能源 ； 可靠度 ； 處罰函數 ； 分散式電源 ； 多目標非線性規劃

並列摘要

Abstract
In this thesis, the parameters of the under-frequency relay are designed and the number of batteries is estimated for a microgrid power system. The unnecessary load shedding can be avoided once the power system is subject to severe disturbances, e.g., generator tripping. This thesis also applies the customer-oriented indices to analyze the reliability. Preliminary simulation results reveal that the outage time can be reduced and the reliabilities for the system can be improved by including the storage batteries.
The NEPLANE V5.5.0 software package was used to set up the models of microgrid power system. The power flow and the transient stability analysis were conducted considering severe generator trippings. The interactive multi-objective nonlinear programming was used to design the multi-stage load shedding and the battery number. The shed load is minimized, the initial swing frequency is maximized, the battery number is minimized and the reliability is minimized for mitigating the loss of costumer’s load. This thesis uses the chaos clone selection algorithm and penalty function. The optimal results were discussed by considering different population sizes, different expected values of objectives and aglorithms.

並列關鍵字

microgrid ； penalty function ； chaos selection algorithm ； multi-objective nonlinear programming ； renewable energy ； reliability ； distributed power

參考文獻

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