考虑风电消纳能力的高载能用户错峰峰谷电价研

第39卷 第4期 2015年4月 电 网 技 术 Power System Technology Vol. 39 No. 4 Apr. 2015

文章编号：1000-3673（2015）04-0946-07 中图分类号：TM 721 文献标志码：A 学科代码：470·4051

考虑风电消纳能力的

高载能用户错峰峰谷电价研究

崔强1，王秀丽1，王维洲2

（1．西安交通大学 电气工程学院，陕西省 西安市 710049； 2．国网甘肃省电力公司 电力科学研究院，甘肃省 兰州市 730050）

Stagger Peak Electricity Price for Heavy Energy-Consuming Enterprises

Considering Improvement of Wind Power Accommodation

CUI Qiang1, WANG Xiuli1, WANG Weizhou2

(1. School of Electrical Engineering, Xi’an Jiaotong University, Xi’ an 710049, Shaanxi Province, China;

2. Electric Power Research Institute, State Grid Gansu Electric Power Company, Lanzhou 730050, Gansu Province, China) ABSTRACT: A stagger peak-valley time-of-use (TOU) price mechanism, in which heavy energy-consuming enterprises are impelled to participate the peak load regulation under the demand side management (DSM), is proposed to improve the wind power accommodation capability of power grid. Considering the poor load transferring capability of heavy energy-consuming enterprises as well as their appeal to continually dividing the period of peak-valley TOU price, an stagger peak power consumption model with continuous division of peak-valley period is correspondingly established, and taking the improvement of wind power accommodation ability of power grid at valley period as the objective, a decision-making model for stagger peak-valley TOU price is built. Through decoupling time period division optimization and electricity price optimization, a two-step optimization method is designed to solve the synthetic optimization model of peak-valley period and electricity price. The frequent disturbance to power consumers due to the peak-valley price under traditional multi-peak load periods can be avoided by stagger peak-valley price mechanism, so it is more suitable for the production characteristics of big consumers such as heavy energy-consuming enterprises and so on. By means of coordinating the peak-load period division of various consumers and decreasing the length of peak-load period, the stress of heavy energy-consuming enterprises due to electric power cost can be relieved, thus the initiative of heavy energy-consuming enterprises to take part in the peak load regulation is enhanced.

KEY WORDS: demand side management; stagger peak-valley

基金项目：国家电网公司科技项目(2012103007)。

Project Supported by Science and Technology Foundation of SGCC(2012103007).

time-of-use price; peak load regulation; wind power accommodation

摘要：提出了一种通过需求侧管理激励负荷侧的高载能企业参与调峰，提高系统风电消纳能力的错峰峰谷分时电价机制。考虑了高载能企业转移负荷能力差的特点及其对峰谷分时电价时段连续划分的诉求，建立了相应的峰谷时段连续划分的错峰用电模型，并以提高系统谷时风电消纳能力为目标建立了错峰峰谷电价决策模型。通过解耦时段划分与电价优化，设计了2步优化方法求解峰谷时段与电价综合优化模型。错峰峰谷电价避免了传统多峰时段峰谷电价对用户的频繁扰动，更加适合高载能企业等大用户的生产特点。通过协调各用户的峰谷时段划分，减少峰时段时长，减轻了高载能企业电力成本压力，提高了参与调峰的积极性。

关键词：需求侧管理；错峰峰谷电价；调峰；风电消纳 DOI：10.13335/j.1000-3673.pst.2015.04.011

0 引言

风能资源的集中分布和国土资源现状决定了我国大规模、集中式的风电开发道路。由于就地风电消纳能力不足，外送通道不畅，2009年以来，内蒙古、甘肃、吉林等区域电网的弃风现象不断出现，大规模风电的并网和消纳难题已成为影响我国风电健康发展的主要因素[1]。

风电消纳难题的实质是随机波动的风电大规模接入使电网的调峰需求大幅增加，且既有电源结构和调度方式下调峰能力不足[2]。研究表明，电力系统吸收秒至分钟级的风电波动造成的影响几乎没有困难，但是随着风电装机容量的增加，系统对由于我日内小时级调峰容量的需求将显著增加[3-6]。国电源结构比较单一，能够日内启停的灵活的调峰