Against the backdrop of global energy shortages and increasingly severe environmental pollution,renewable energy is gradually becoming a significant direction for future energy development.Power electronics converters...Against the backdrop of global energy shortages and increasingly severe environmental pollution,renewable energy is gradually becoming a significant direction for future energy development.Power electronics converters,as the core technology for energy conversion and control,play a crucial role in enhancing the efficiency and stability of renewable energy systems.This paper explores the basic principles and functions of power electronics converters and their specific applications in photovoltaic power generation,wind power generation,and energy storage systems.Additionally,it analyzes the current innovations in high-efficiency energy conversion,multilevel conversion technology,and the application of new materials and devices.By studying these technologies,the aim is to promote the widespread application of power electronics converters in renewable energy systems and provide theoretical and technical support for achieving sustainable energy development.展开更多
Modeling of photovoltaic (PV) and wind farms (WF) stations to take into account these renewable energies into the power flow formulation are summarized. A strategy based on multi objective optimization in order to all...Modeling of photovoltaic (PV) and wind farms (WF) stations to take into account these renewable energies into the power flow formulation are summarized. A strategy based on multi objective optimization in order to allocate PV and WF power into electrical power system is proposed. It is assumed that there are a reduced number of choices to allocate the stations. The algorithm is applied to the 39-bus test power system. The results show that the proposed algorithm is capable of optimal placement of renewable units.展开更多
研究风电场等效虚拟惯量评估方法可以定量掌握风电场对电网的惯量贡献。已有方法通过建立含有虚拟惯量控制的风电机组简化模型并结合转子运动方程推导出风电场等效惯量的计算公式,但该方法却存在所需参数众多且不易获得的问题。对此,提...研究风电场等效虚拟惯量评估方法可以定量掌握风电场对电网的惯量贡献。已有方法通过建立含有虚拟惯量控制的风电机组简化模型并结合转子运动方程推导出风电场等效惯量的计算公式,但该方法却存在所需参数众多且不易获得的问题。对此,提出一种从易于获得的量测数据中求取风电场等效惯量的方法。首先,介绍了风电虚拟惯量的概念。其次,对风电机组惯量响应过程中自身动能和输出电能的转换进行分析,并根据能量守恒原理提出一种利用风电场公共耦合点(point of common coupling,PCC)有功-频率量测数据进行计算的惯量评估方法,该方法可以避免基于系统辨识方法在评估过程中对辨识模型降阶所带来的误差,从而得到更高精度的惯量评估结果。最后,在PSASP中建立仿真算例验证了所提方法的有效性和优越性。展开更多
文摘Against the backdrop of global energy shortages and increasingly severe environmental pollution,renewable energy is gradually becoming a significant direction for future energy development.Power electronics converters,as the core technology for energy conversion and control,play a crucial role in enhancing the efficiency and stability of renewable energy systems.This paper explores the basic principles and functions of power electronics converters and their specific applications in photovoltaic power generation,wind power generation,and energy storage systems.Additionally,it analyzes the current innovations in high-efficiency energy conversion,multilevel conversion technology,and the application of new materials and devices.By studying these technologies,the aim is to promote the widespread application of power electronics converters in renewable energy systems and provide theoretical and technical support for achieving sustainable energy development.
文摘Modeling of photovoltaic (PV) and wind farms (WF) stations to take into account these renewable energies into the power flow formulation are summarized. A strategy based on multi objective optimization in order to allocate PV and WF power into electrical power system is proposed. It is assumed that there are a reduced number of choices to allocate the stations. The algorithm is applied to the 39-bus test power system. The results show that the proposed algorithm is capable of optimal placement of renewable units.
文摘研究风电场等效虚拟惯量评估方法可以定量掌握风电场对电网的惯量贡献。已有方法通过建立含有虚拟惯量控制的风电机组简化模型并结合转子运动方程推导出风电场等效惯量的计算公式,但该方法却存在所需参数众多且不易获得的问题。对此,提出一种从易于获得的量测数据中求取风电场等效惯量的方法。首先,介绍了风电虚拟惯量的概念。其次,对风电机组惯量响应过程中自身动能和输出电能的转换进行分析,并根据能量守恒原理提出一种利用风电场公共耦合点(point of common coupling,PCC)有功-频率量测数据进行计算的惯量评估方法,该方法可以避免基于系统辨识方法在评估过程中对辨识模型降阶所带来的误差,从而得到更高精度的惯量评估结果。最后,在PSASP中建立仿真算例验证了所提方法的有效性和优越性。