【摘要】：針對微電網(wǎng)由并網(wǎng)轉(zhuǎn)孤島運行時自愈控制過程中的電能質(zhì)量、經(jīng)濟性、負荷支撐和快速響應等多方面的需求,考慮負荷、分布式電源的隨機性特點,以微電網(wǎng)頻率控制為主線,提出了基于頻率調(diào)整的多目標優(yōu)化自愈控制策略。該策略中,將微電網(wǎng)由并網(wǎng)轉(zhuǎn)孤島運行的優(yōu)化自愈控制分為2個主要階段:第1階段為一次和二次調(diào)頻階段,一次調(diào)頻通過分布式電源的下垂控制實現(xiàn),在二次調(diào)頻中使用了按成本大小依次投退分布式電源的優(yōu)化控制策略,實現(xiàn)微電網(wǎng)功率平衡及經(jīng)濟運行下的頻率、功率穩(wěn)定;第2階段為三次調(diào)頻階段,以經(jīng)濟運行和最大負荷支撐為目標,綜合考慮負荷、分布式電源的隨機性,引進機會約束規(guī)劃算法將不確定量轉(zhuǎn)化為確定量,實現(xiàn)微電網(wǎng)最大負荷支撐下的經(jīng)濟運行。
[Abstract]:aiming at the demands of the power quality, the economy, the load support and the quick response in the self-healing control process when the micro-power grid is operated by the grid-connected island, the random characteristics of the load and the distributed power supply are taken into account, the frequency of the micro-power grid is controlled as the main line, A multi-objective optimal self-healing control strategy based on frequency adjustment is proposed. in the strategy, the optimized self-healing control for the operation of the micro-power grid from the grid to the island is divided into two main stages: the first stage is the primary and secondary frequency modulation stages, the primary frequency modulation is realized through the droop control of the distributed power supply, in the secondary frequency modulation, the optimized control strategy of the distributed power supply is put in turn according to the cost size, the power balance of the micro power grid and the frequency under the economic operation are realized, the power is stable, the second stage is the third frequency modulation stage, the economic operation and the maximum load support are taken as the target, and the load is comprehensively considered, The randomness of the distributed power supply, the introduction of the opportunity-constrained programming algorithm to convert the uncertain quantity into the determined quantity, and realize the economic operation under the maximum load support of the micro-power grid.
【作者單位】： 湖北省新能源微電網(wǎng)協(xié)同創(chuàng)新中心(三峽大學);
【基金】：國家自然科學基金項目(51277110)~~
【分類號】：TM727

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【共引文獻】

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1 張羽;李咸善;;基于頻率調(diào)整策略的微電網(wǎng)多目標優(yōu)化自愈控制[J];電網(wǎng)技術;2017年03期

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本文編號：2510476