含HVDC与P2G的跨区域电-气互联系统优化调度

doi:10.12204/j.issn.1000-7229.2020.12.006

电力建设 ›› 2020, Vol. 41 ›› Issue (12): 57-67.doi: 10.12204/j.issn.1000-7229.2020.12.006

含HVDC与P2G的跨区域电-气互联系统优化调度

刘凤全¹, 王成福¹, 王瑞琪², 杨明¹, 郭光华², 张健³, 杜萍静⁴

1.山东大学电气工程学院,济南市 250061
2.国网山东综合能源服务有限公司,济南市 250021
3.国网山东省电力公司滨州供电公司,山东省滨州市 256699
4.国网江苏省电力有限公司检修分公司苏州运维站,江苏省苏州市 215600

收稿日期:2020-08-05 出版日期:2020-12-01 发布日期:2020-12-04
通讯作者: 王成福
作者简介:刘凤全(1994),男,硕士研究生,主要研究方向为综合能源系统调度运行;|王瑞琪(1986),男,博士,高级工程师,主要从事综合能源系统技术、新能源并网发电技术研究工作;|杨明(1980),男,博士,教授,主要研究方向为电力系统优化调度、电力系统运行与控制、新能源预测与并网分析;|郭光华(1966),男,硕士,高级工程师,主要从事综合能源技术领域研究工作;|张健(1970),男,工程师,主要从事电力发展规划、新能源电网接入研究工作;|杜萍静(1994),女,硕士,主要从事电力系统运行与控制研究工作。
基金资助:
山东省重大科技创新工程项目(2019JZZY010903)

Optimal Dispatch of Cross-Regional Integrated Electricity-Gas System with HVDC and P2G

LIU Fengquan¹, WANG Chengfu¹, WANG Ruiqi², YANG Ming¹, GUO Guanghua², ZHANG Jian³, DU Pingjing⁴

1. College of Electrical Engineering, Shandong University, Jinan 250061, China
2. State Grid Shandong Integrated Energy Services Co., Ltd., Jinan 250021, China
3. State Grid Binzhou Power Supply Company, Binzhou 256699, Shandong Province, China
4. Suzhou Operation and Maintenance Station, Maintenance Branch of State Grid Jiangsu Electric Power Co., Ltd., Suzhou 215600, Jiangsu Province, China

Received:2020-08-05 Online:2020-12-01 Published:2020-12-04
Contact: WANG Chengfu
Supported by:
Major Innovation Project of Shandong Province(2019JZZY010903)

摘要/Abstract

摘要：

远距离直流外送和电能转换存储是实现高比例可再生能源消纳的重要手段。考虑跨区层级高压直流输电(high-voltage direct current,HVDC)和区域内电转气(power to gas,P2G)相配合,提出面向大规模风电消纳的跨区域电-气互联系统优化调度策略。首先,针对HVDC功率传输计划独立编制难以匹配风电出力强随机性的问题,建立HVDC阶梯式运行优化模型。同时,考虑风电反调峰特性提出利用P2G进行风电转换,并与天然气系统管存配合实现间接存储。然后,综合考虑系统电压稳定性等安全约束条件,以系统运行经济性最优为目标建立日前优化调度模型,并针对模型非凸、非线性问题,采用电压幅值精确计算的线性化潮流和分段线性化方法进行处理。最后,通过多个场景仿真分析,验证了所提优化策略的有效性和经济性。

关键词: 跨区域电-气互联系统, 高压直流输电(HVDC), 电转气(P2G), 管存, 线性化, 风电消纳

Abstract:

Long-distance DC transmission and power conversion and storage are important means to achieve high proportion consumption of renewable energy. Considering the cooperation between cross-regional high-voltage direct current (HVDC) and intra-regional power to gas (P2G), a cross-regional integrated electricity-gas system optimized dispatch strategy for large-scale wind power consumption is proposed. First of all, in view of the problem that independent preparation of the HVDC power transmission plan is difficult to match the strong randomness of wind power, an stepped operation optimization model for HVDC is established. At the same time, considering the anti-peak regulation characteristics of wind power, it is proposed to use P2G for large-scale wind power conversion and to realize indirect storage cooperate with line storage of gas system. Then, considering the safety constraints such as the system voltage stability, the day-ahead optimal dispatch model is established with the goal of optimal system operation economy, the linear power flow algorithm with high voltage accuracy, and the piecewise linearization method are used to address the non-convex and nonlinear model. Finally, the effectiveness and economy of the proposed strategy are verified by several simulation results.

Key words: cross-regional integrated electricity-gas system, high-voltage direct current(HVDC), power to gas(P2G), line storage, linearization, wind power accommodation

中图分类号:

TM71

刘凤全, 王成福, 王瑞琪, 杨明, 郭光华, 张健, 杜萍静. 含HVDC与P2G的跨区域电-气互联系统优化调度[J]. 电力建设, 2020, 41(12): 57-67.

LIU Fengquan, WANG Chengfu, WANG Ruiqi, YANG Ming, GUO Guanghua, ZHANG Jian, DU Pingjing. Optimal Dispatch of Cross-Regional Integrated Electricity-Gas System with HVDC and P2G[J]. ELECTRIC POWER CONSTRUCTION, 2020, 41(12): 57-67.

图/表 18

图1 电网调度计划

Fig.1 Dispatch plan for power grid

图2 管道传输示意图

Fig.2 Diagram of transmission in pipeline

图3 直流线路传输功率

Fig.3 Power transmission of the DC line

图4 系统弃风情况

Fig.4 Wind power abandonment of the system

表1 HVDC运行方式的影响

Table 1 Influence of the HVDC operation mode

表2 P2G和管存的影响

Table 2 Influence of the P2G and line storage

图5 P2G设备用电情况

Fig.5 Power consumption of the P2G

图6 系统管存变化情况

Fig.6 Changes in the line storage of the system

表3 P2G运行成本的影响

Table 3 Influence of the P2G operation cost

图 A1 互联系统网络结构

Fig.A1 Structure of the interconnection system

表 A1 风电机组参数

Table A1 Parameters of wind power units

表 A2 燃气机组参数

Table A2 Parameters of gas power units

表 A3 常规机组参数

Table A3 Parameters of conventional generators

表 A4 压缩机参数

Table A4 Parameters of gas compressors

表 A5 P2G设备参数

Table A5 Parameters of P2G units

表 A6 气源参数

Table A6 Parameters of gas wells

表 A7 HVDC运行参数

Table A7 Parameters of the HVDC

图 A2 冬季典型日负荷、风电预测值

Fig.A2 Forecast loads and wind power on a typical winter day

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含HVDC与P2G的跨区域电-气互联系统优化调度

Optimal Dispatch of Cross-Regional Integrated Electricity-Gas System with HVDC and P2G

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