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含大规模风电系统的非AGC与AGC机组高峰协调控制策略

, PP. 156-163

Keywords: 风电,自动发电控制,高峰,调频,协调控制

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Abstract:

大规模风电接入使得电网在高峰运行时段可能面临较大的调峰与调频压力。提出了一种高峰运行时段非自动发电控制(automaticgenerationcontrol,AGC)机组、按期望运行点调整(baseloadoff-regulated,BLO)型AGC和按区域控制偏差(areacontrolerror,ACE)自动调节(baseloadregulated,BLR)型AGC三类机组的协调控制策略。首先根据BLO和BLR型AGC机组在每个预调度时段末期机组总体调节容量情况,判断是否启动控制策略;若策略启动后,BLR型AGC机组根据负荷与风电功率预报偏差概率分布信息,整定其在下一个在线调度时段的基点功率值,使其具有合理概率意义上的正负调节能力;非AGC机组一般按经济计划点运行,在BLO型AGC机组正备用匮乏,或系统频率出现较大偏差时适度调整非AGC机组的出力,以增补BLO型AGC机组的正备用;BLO型AGC机组在每个在线调度时段及时恢复BLR型AGC机组的调节能力,在整个控制策略中起承上启下的作用。算例结果表明,该协调控制策略正确可行。

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