作者：龚逊东, 薛溟枫, 毛晓波, 潘湧涛

作者单位：国网江苏省电力有限公司无锡供电分公司，江苏 无锡 214061

关键词：电转气;风电;综合能源系统;经济调度;电力系统

摘要：

电转气技术是一种有前景的连接电网与燃气网的方法，将广泛应用于电-气-热综合能源系统中，以提高其运行灵活性。然而，电转气较高的运行成本将影响其在综合能源系统中的应用。该文提出计及电转气成本和风电利用率的电-气-热综合能源系统调度模型，分析电转气成本特性对综合能源系统调度的影响。首先，介绍包含电转气的电-气-热综合能源系统，并对电转气的各种运行成本进行分析，以获取电转气的成本特性。然后，提出一种多目标综合能源系统日前调度模型，以协调综合能源系统运行，达到运行成本与风电利用率之间的最优折衷。最后，采用ε约束法和熵权法对模型进行求解。仿真分析表明：电转气成本特性对综合能源系统的调度有显著影响，该模型可有效得到最优折衷解。

Influence of power-to-gas cost characteristics on scheduling of power-gas-heating integrated system
GONG Xundong, XUE Mingfeng, MAO Xiaobo, PAN Yongtao
Wuxi Power Supply Company, State Grid Jiangsu Electric Power Co., Ltd., Wuxi 214061, China
Abstract: The power-to-gas (P2G) technology is a promising way to connect the power grid and gas grid. It will be widely used in the power-gas-heating integrated system (PGHIS) to improve its operation flexibility. However, the high operating cost of P2G will affect its application in the PGHIS. In this paper, a scheduling model of PGHIS considering the cost of P2G and the utilization of wind power is proposed, and the influence of the cost characteristics of P2G on the scheduling of PGHIS is analyzed. First, the PGHIS including P2G is introduced, and the various operating costs of the P2G are analyzed to obtain the cost characteristics of P2G. Then, a multi-objective PGHIS daily scheduling model is proposed to coordinate the operation of the PGHIS and achieve the optimal trade-off between the operation cost and the utilization of the wind power. Finally, ε-constraint method and entropy weight method are used to solve the model. Simulation analysis shows that the cost characteristics of P2G have a significant impact on the scheduling of PGHIS, and the model can effectively get the optimal compromise solution.
Keywords: power-to-gas (P2G);wind power;integrated energy systems;economic dispatch;power system
2020, 46(7):33-39  收稿日期: 2020-04-06;收到修改稿日期: 2020-04-30
基金项目: 国家自然科学基金项目（51777105）；国网江苏省电力有限公司科技项目（J2019017）
作者简介: 龚逊东(1971-),男,江苏常州市人,高级工程师,硕士,研究方向为新能源并网、预测、调度、电力营销管理等
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