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1.电网智能化调度与控制教育部重点实验室(山东大学),山东省济南市 250061
2.国网山东省电力公司济南供电公司,山东省济南市 250001
3.国网山东省电力公司枣庄供电公司,山东省枣庄市 277000
4.淄博职业学院,山东省淄博市 255314
王孟夏(1983—),男,通信作者,博士,讲师,硕士生导师,主要研究方向:电力系统分析与控制。E-mail:wangmx@sdu.edu.cn
周生远(1996—),男,硕士研究生,主要研究方向:电力系统分析、优化与控制。E-mail:syzhou@mail.sdu.edu.cn
杨明(1980—),男,博士,教授,博士生导师,主要研究方向:电力系统分析与控制。E-mail:myang@sdu.edu.cn
收稿日期:2020-04-29,
修回日期:2020-11-17,
网络出版日期:2020-12-25,
纸质出版日期:2021-03-25
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王孟夏,周生远,杨明等.计及海底电缆热特性的可接纳海上风电装机容量评估方法[J].电力系统自动化,2021,45(6):195-202.
WANG Mengxia,ZHOU Shengyuan,YANG Ming,et al.Assessment Method for Acceptable Installed Capacity of Offshore Wind Farms Considering Thermal Characteristics of Submarine Cables[J].Automation of Electric Power Systems,2021,45(6):195-202.
王孟夏,周生远,杨明等.计及海底电缆热特性的可接纳海上风电装机容量评估方法[J].电力系统自动化,2021,45(6):195-202. DOI: 10.7500/AEPS20200429013.
WANG Mengxia,ZHOU Shengyuan,YANG Ming,et al.Assessment Method for Acceptable Installed Capacity of Offshore Wind Farms Considering Thermal Characteristics of Submarine Cables[J].Automation of Electric Power Systems,2021,45(6):195-202. DOI: 10.7500/AEPS20200429013.
海上风电功率波动性较强,其外送海底电缆载流与温度变化的不同步性(热惯性)显著,短时载流潜力有待挖掘。对此,提出了计及电缆热特性的可接纳海上风电装机容量评估方法,在充分考虑电缆短时载流能力的情况下评估其可接纳的风电装机容量。基于海上风电功率及其变化速度的概率分布规律,提出风电功率时间序列模拟方法,而后结合交联聚乙烯(XLPE)绝缘电缆热平衡模型及寿命损失模型,以最大化海上风电装机容量为目标,以电缆设计使用期限内允许寿命损失为约束,建立海上风电装机容量决策模型,并提出启发式求解方法。仿真结果表明,该方法可显著提高海底电缆可接纳的风电装机容量,有助于提高海底电缆利用率以及海上风电外送工程的投资收益。
The offshore wind power fluctuates greatly
which causes that the current-carrying and temperature variation of submarine cables are asynchronous significantly (the thermal inertia)
and the short-term current-carrying potential remains to be explored. In this regard
an assessment method is proposed for the acceptable installed capacity of offshore wind farms considering the thermal characteristics of cables. The method assesses the acceptable installed capacity in the case of fully considering the short-term current-carrying capacity of the cable. Firstly
a simulation method of wind power time series is proposed based on the probability distribution of offshore wind power and its rate of change. Then
combined with the heat balance model and the life loss model of cross linked polyethylene (XLPE) insulated cables
the decision model for the installed capacity of offshore wind farms is established and solved by the heuristic method to maximize the installed capacity of offshore wind farms
which takes the allowable life loss of cables within its design life as the constraint. The simulation results show that the method can effectively increase the acceptable installed capacity of offshore wind farms
and improve the utilization rate of submarine cables and the investment income of offshore wind power transmission projects.
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