Analysis and Calculation of Short-circuit Current Contributed by Photovoltaic Generation

摘要：

　　With running out of fossil fuels gradually,photovoltaic generations have developed rapidly and been widely applied in recent years.Researches on modeling, control and steady-state output characteristics of converters is taken detailed and in depth.However, the transient output characteristics of the converter is still not very clear, of which the output current time characteristics has not yet obtained during transient process.present researches are focusing on principle of transient currents based on simulations which are lack of systemic and in-depth theoretical derivation.In this paper transient characteristic and influence of photovoltaic generation under non-metal unsymmetrical fault of grid are studied.Utilizing space vector method, state equations of inverter arc derived and simplified transient expressions of short-circuit currents of photovoltaic generation are proposed.Finally transient process and its features are analyzed which are further simulated in PSCAD.

关键词： Photovoltaic generation Short-circuit current Transient characteristic Vector control

作者: Di Zheng Jinxin Ouyang Xiaofu Xiong Chao Xiao Ruimiao Wang Jin Gao

作者单位: State Key Laboratory of Power Transmission Equipment &System Security and New Technology, Chongqing State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing State Key Laboratory of Power Transmission Equipment and System Security and New Technology at Chong

会议类型: 国际会议

会议名称: 第六届现代电力系统自动化和保护国际会议

会议地点: 南京

会议语种:英文

页码: 363-367

在线出版日期: 2015-09-21（万方平台首次上网日期，不代表论文的发表时间）