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考虑电转气响应特性与风电出力不确定性的电-气综合能源系统协调调度
高晗1,2, 李正烁1,2
1.山东大学 电气工程学院,山东 济南 250061;2.山东大学 电网智能化调度与控制教育部重点实验室,山东 济南 250061
摘要:
未来可再生能源将在新型电力系统中占主导地位,风光消纳问题会日趋严峻,电转气技术可以应对风电波动,为解决这一问题提供了有效途径。现有研究在电-气综合能源系统调度过程中虽然考虑了电转气设备,但忽略了电转气设备的响应特性,这不仅夸大了风电消纳能力,而且难以保证调度结果的可行性。为解决上述问题,提出了在风电不确定条件下考虑电转气设备响应特性的电-气综合能源系统调度模型。首先,通过机会约束刻画风电出力不确定条件下系统安全运行要求;然后,考虑了电转气设备的响应特性及相应停启时间约束;最后,利用分段线性化和数值积分的方法将调度模型转换为混合整数线性规划模型。仿真结果表明考虑电转气响应特性对电-气综合能源系统的可靠、经济运行有重要意义。
关键词:  电-气综合能源系统  电转气  响应特性  风电  不确定性  调度
DOI:10.16081/j.epae.202109020
分类号:TM73;TK01
基金项目:国家自然科学基金资助项目(52007105);中国电机工程学会青年人才托举工程项目(JLB-2020-170)
Coordinated scheduling of integrated electricity-gas energy system considering response characteristic of power-to-gas and wind power uncertainty
GAO Han1,2, LI Zhengshuo1,2
1.School of Electrical Engineering, Shandong University, Jinan 250061, China;2.Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, Jinan 250061, China
Abstract:
Renewable energy will play a leading role in future power systems, and the problem of accommodating wind and solar power production represents a critical issue. P2G(Power-to-Gas) technology contributes to alleviating the fluctuation of wind power, which provides an effective way to solve this problem. Many existing studies consider the P2G facilities in the dispatching process of the integrated electricity-gas energy system, but ignore the response characteristics of P2G facilities. As a result, the ability of wind power accommodation is over-estimated, and the feasibility of operating decisions cannot be ensured. To solve this issue, an operation model of an integrated electricity-gas energy system that considers the response characteristics of P2G facilities is proposed, in which the intermittent wind power production is addressed. Firstly, the chance constraint programming approach is adopted to provide secure operating decisions under stochastic wind power output. Then, the response characteristics of P2G facilities and the corresponding downtime and uptime are considered. Finally, the operation model is transformed into a mixed integer linear programming problem by using piecewise linearization and numerical integration approaches. Case studies demonstrate that the consideration of P2G response characteristic ensures the reliable and economic operation of integra-ted electricity-gas energy system.
Key words:  integrated electricity-gas energy system  power-to-gas  response characteristic  wind power  uncertainty  scheduling

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