风电优先调度对电力系统能源强度及经济成本的影响

doi:10.11930/j.issn.1004-9649.2016.09.130.07

摘要/Abstract

摘要： 近年来,中国风电产业快速发展,但同时面临着越来越严重的弃风问题,其主要原因之一是社会对风电发展的社会价值和经济价值还没有达成统一认识。利用京津唐电网2014年的实际数据,计算了在不同风电接入比例下,风电优先调度对电力系统能源强度和经济成本的影响,并进一步分析了为实现电力系统能源强度最低是否需要弃风的问题以及弃风出现的拐点及具体的弃风比例。研究显示,随着风电发电比例的增加,电力系统能源强度不断降低;为实现系统能源强度最低,在冬大和冬小负荷方式下,风电发电比例分别为14.19%和19.92%时将产生弃风,但此时弃风比例很低,接近于0;当风电发电比例分别为22.51%和24.62%时,为实现系统能源强度最低,冬大和冬小时弃风率也只有5.00%左右。研究还显示,随着风电发电比例的增加,电力系统经济成本不断下降。

关键词: 电力系统, 风电, 优先调度, 能源强度, 经济成本

Abstract: China’s wind power has developed quickly in recent years. However, the issue of wind power curtailment is becoming more and more seriously. One of reasons of China’s severe wind power curtailment is inconsistent recognition of social and economic value of wind power development. In order to analyze the value of wind power development, using Jing-Jin-Tang power network data in 2014, power system energy intensity and economic cost with different ratio of wind power integration is calculated. It is further analyzed that whether wind curtailment is necessary to minimize energy intensity and yielding point during wind curtailment occurrence. The results show that energy intensity decreases with wind power generation proportion increases. To minimize power system energy intensity, wind curtailment occurs at 14.19% and 19.92% wind power proportion in winter high load and low load, respectively. However, the wind curtailment rate is close to zero at those points. Furthermore, when the wind power proportion is 22.51% and 24.62% in winter high load and low load respectively, the wind curtailment rate is only about 5%. The economic cost of power system decreases with wind power proportion increases.

Key words: wind power, priority dispatch, energy intensity, economic cost

中图分类号:

TM715

刘素蔚, 赵晓丽, 闫风光. 风电优先调度对电力系统能源强度及经济成本的影响[J]. 中国电力, 2016, 49(9): 130-136.

LIU Suwei, ZHAO Xiaoli, YAN Fengguang. The Impact of Wind Power Priority Dispatch on Power System Energy Intensity and Economic Cost[J]. Electric Power, 2016, 49(9): 130-136.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.2016.09.130.07

https://www.electricpower.com.cn/CN/Y2016/V49/I9/130

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