考虑可中断负荷的风电接入系统旋转备用双层优化方法

doi:10.12204/j.issn.1000-7229.2020.11.015

电力建设 ›› 2020, Vol. 41 ›› Issue (11): 145-152.doi: 10.12204/j.issn.1000-7229.2020.11.015

• 电力经济研究 • 上一篇

考虑可中断负荷的风电接入系统旋转备用双层优化方法

李鹏¹, 李凤婷¹, 黄蓉², 陶仁峰¹, 马小峻³

1.可再生能源发电与并网技术教育部工程研究中心(新疆大学),乌鲁木齐市 830047
2.国网甘肃省电力公司电力科学研究院,兰州市 730070
3.国网新疆电力有限公司乌鲁木齐供电公司,乌鲁木齐市 830011

收稿日期:2020-02-23 出版日期:2020-11-01 发布日期:2020-11-04
通讯作者: 李凤婷
作者简介:李鹏(1995),男,硕士研究生,主要研究方向为电力系统优化调度;|黄蓉(1986),女,硕士,高级工程师,主要研究方向为大规模新能源发电并网运行控制工作;|陶仁峰(1985),男,博士,主要研究方向为电力系统分析与优化调度;|马小峻(1994),男,硕士,主要研究方向为微网电源规划与运营。
基金资助:
新疆维吾尔自治区科技援疆专项(2017E0277);国家自然科学基金项目(51767023)

Two-Level Optimization Method for Spinning Reserve in Wind Power System Considering Interruptible Load

LI Peng¹, LI Fengting¹, HUANG Rong², TAO Renfeng¹, MA Xiaojun³

1. Engineering Research Center for Renewable Energy Power Generation and Grid Technology, Ministry of Education (Xinjiang University), Urumqi 830047, China
2. Electric Power Research Institute, State Grid Gansu Electric Power Company, Lanzhou 730070, China
3. Urumqi Power Supply Company, State Grid Xinjiang Electric Power Co., Ltd., Urumqi 830011, China

Received:2020-02-23 Online:2020-11-01 Published:2020-11-04
Contact: LI Fengting
Supported by:
Special Supportive Project for Xinjiang Uygur Autonomous Region(2017E0277);National Natural Science Foundation of China(51767023)

摘要/Abstract

摘要：

风电接入规模的不断扩大加大了电力系统的波动,使得电网需要配置更多的旋转备用(spinning reserve,SR)抑制电力系统波动与电网等效负荷预测偏差,传统以固定比例配置常规机组旋转备用容量的方法经济性差且未考虑系统内其他资源。考虑辅助服务市场进一步开放以及可中断负荷特性,将可中断负荷与常规机组一同参与辅助服务市场,文章提出了一种考虑可中断负荷的旋转备用双层优化方法。该方法以时间为尺度,上层优化日前协议签订的容量成本,下层优化日内实时调用成本,构建优化总期望成本的双层优化目标函数,基于序列化建模思想将系统等效负荷预测偏差离散化得出相应决策期望值,通过商用软件CPLEX求解目标函数获得各时段可中断负荷与常规机组最优备用容量。最后以新疆某地区实际运行数据进行算例分析,验证所提方法的可行性。

关键词: 双层优化, 风电, 旋转备用(SR), 可中断负荷, 辅助服务市场

Abstract:

With the continuous expansion of wind power access, the fluctuation of the power system is increasing. The grid needs to configure more spinning reserve to suppress fluctuations of the power system and the forecast deviation of equivalent load. Traditional method that configures conventional spinning reserve capacity at a fixed proportion without considering other resources in the system has poor economy. Considering the further opening up of the ancillary service market and the characteristics of interruptible load, the interruptible load and conventional units are combined to participate in the ancillary service market. The proposed method is based on time scale, where the upper optimization has agreement with the capacity of the cost, the lower optimization call cost in real-time within days. The method constucts an optimal bi-level optimization objective function aimed at total expected cost. On the basis of the idea of serialization modeling, the system equivalent load forecasting deviation is discretized to obtain the corresponding decision expectation. The Commercial Software CPLEX is used to solve the objective function to obtain the interruptible load and the optimal reserve capacity of the conventional units. Finally, an example is given to verify the feasibility of the proposed method.

Key words: double layer optimization, wind power, spinning reserve(SR), interruptible load, ancillary market

中图分类号:

TM614

李鹏, 李凤婷, 黄蓉, 陶仁峰, 马小峻. 考虑可中断负荷的风电接入系统旋转备用双层优化方法[J]. 电力建设, 2020, 41(11): 145-152.

LI Peng, LI Fengting, HUANG Rong, TAO Renfeng, MA Xiaojun. Two-Level Optimization Method for Spinning Reserve in Wind Power System Considering Interruptible Load[J]. ELECTRIC POWER CONSTRUCTION, 2020, 41(11): 145-152.

图/表 8

图1 SR双层优化模型基本框架

Fig.1 Basic framework of the two-layer optimization model

图2 系统等效负荷预测偏差

Fig.2 Prediction deviation of system equivalent load

表1 系统等效负荷预测偏差离散化

Table 1 Discretization of the prediction deviation of system equivalent load

图3 日前配置容量

Fig.3 Day-ahead capacity

图4 实时调用容量

Fig.4 Real-time call capacity

图5 方案1和方案2日内调用容量对比结果

Fig.5 Comparison of call capacity results within days of scheme 1 and 2

表2 方案1和方案2经济性对比结果

Table 2 Comparison results of the economy of scheme 1 and 2

表3 机组备用价格与可中断负荷价格参数对比结果

Table 3 Comparison results between the unit reserve price and the price parameters of interruptible load

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考虑可中断负荷的风电接入系统旋转备用双层优化方法

Two-Level Optimization Method for Spinning Reserve in Wind Power System Considering Interruptible Load

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