高密度光伏接入配电网的控制保护系统设计
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摘要
传统的控制系统在控制时保护效果很差,对电流的控制精准度把握不足,控制高密度光伏电时十分困难,难以满足目前电力机构的要求。为了解决上述问题,设计了一种新的高密度光伏电接入配电网控制保护系统,分别对系统的硬件和软件进行设计。硬件部分主要设计了系统的变频器、控制器和保护线路;软件工作由电网信号采集、电网信号处理、电网信号控制和电网信号保护四步组成。与传统控制保护系统进行对比实验,结果表明,所设计的系统能够精准地控制接入配电网的高密度光伏,确保配电工作的安全性,提高工作效率。
The traditional control system has poor protection effect and poor accuracy in current control.It is very difficult to control high-density photovoltaic power,and it has been difficult to meet the current requirements of power institutions. In order to solve the above problems,a new control and protection system for high-density photovoltaic access distribution network is designed,and the hardware and software of the system are designed respectively. The hardware part mainly designs the frequency converter,controller and protection circuit of the system,and the software work consists of four steps:power network signal acquisition,power network signal processing,power network signal control and power network signal protection. Compared with the traditional control and protection system,the results show that the designed system can accurately control the high-density photovoltaic connected to the distribution network,ensure the security of distribution work and improve the efficiency.
The traditional control system has poor protection effect and poor accuracy in current control.It is very difficult to control high-density photovoltaic power,and it has been difficult to meet the current requirements of power institutions. In order to solve the above problems,a new control and protection system for high-density photovoltaic access distribution network is designed,and the hardware and software of the system are designed respectively. The hardware part mainly designs the frequency converter,controller and protection circuit of the system,and the software work consists of four steps:power network signal acquisition,power network signal processing,power network signal control and power network signal protection. Compared with the traditional control and protection system,the results show that the designed system can accurately control the high-density photovoltaic connected to the distribution network,ensure the security of distribution work and improve the efficiency.
引文
[1]李育强,宋国兵,王维庆,等.基于参数识别光伏接入配网永久性故障判别方法[J].电力系统保护与控制,2017,45(16):1-7.
[2]李升,姜程程,赵之瑜,等.分布式光伏电站接入低压配电网系统暂态电压稳定性研究[J].电力系统保护与控制,2017,45(8):67-72.
[3]金卓勍,向铁元,陈红坤,等.考虑电能质量问题的分布式光伏发电接入规划方法[J].电力系统保护与控制,2017,45(9):1-8.
[4]孙苗苗,王慧,朱晓荣.光伏电站接入对配电网电流保护的影响研究[J].电测与仪表,2017,54(17):29-34.
[5]许路广,王海波,战扬.分布式光伏系统接入配电网对继电保护动作行为影响分析[J].低碳世界,2017,56(11):89-90.
[6]李江,张永利,刘强,等.分布式光储微电网系统并网控制策略研究[J].电力系统保护与控制,2017,45(23):90-97.
[7]陈力,胡钋,卫敬宜,等.一种新的光伏并网评价体系[J].电力系统保护与控制,2017,45(2):105-110.
[8]翟建伟,张勇军,刘斯亮,等.基于PQ-QV-PV节点的光储输出功率主动控制方法[J].电力系统保护与控制,2018,46(10):1-9.
[9]李振坤,鲍新雨,邵宇鹰,等.考虑多种调压措施的分布式光伏消纳能力研究[J].电力系统保护与控制,2018,46(8):10-16.
[10]贾科,顾晨杰,毕天姝,等.大型光伏电站汇集系统的故障特性及其线路保护[J].电工技术学报,2017,32(9):189-198.
[11]尹青,杨洪耕,马晓阳.考虑多重不确定参数的配电网概率无功优化[J].电力系统保护与控制,2017,45(7):141-147.
[12]薛峰,蔡云峰,徐宁,等.基于功率解耦控制的并网光伏发电系统机电暂态模型[J].电力系统保护与控制,2017,45(9):63-70.
[13]殷自力,郑佩祥,陈宇星,等.含电动汽车和分布式电源的配电网的可靠性评估[J].电力系统保护与控制,2017,16(24):77-83.
[14]张骁,胡忠平,时金林,等.家用光伏储能系统的设计与实现[J].电子设计工程,2017,25(19):165-169.
[15]李泽彬,姚有峰,张飞龙,等.基于单片机的智能家居语音控制系统设计[J].电子设计工程,2017,25(8):175-177.
[2]李升,姜程程,赵之瑜,等.分布式光伏电站接入低压配电网系统暂态电压稳定性研究[J].电力系统保护与控制,2017,45(8):67-72.
[3]金卓勍,向铁元,陈红坤,等.考虑电能质量问题的分布式光伏发电接入规划方法[J].电力系统保护与控制,2017,45(9):1-8.
[4]孙苗苗,王慧,朱晓荣.光伏电站接入对配电网电流保护的影响研究[J].电测与仪表,2017,54(17):29-34.
[5]许路广,王海波,战扬.分布式光伏系统接入配电网对继电保护动作行为影响分析[J].低碳世界,2017,56(11):89-90.
[6]李江,张永利,刘强,等.分布式光储微电网系统并网控制策略研究[J].电力系统保护与控制,2017,45(23):90-97.
[7]陈力,胡钋,卫敬宜,等.一种新的光伏并网评价体系[J].电力系统保护与控制,2017,45(2):105-110.
[8]翟建伟,张勇军,刘斯亮,等.基于PQ-QV-PV节点的光储输出功率主动控制方法[J].电力系统保护与控制,2018,46(10):1-9.
[9]李振坤,鲍新雨,邵宇鹰,等.考虑多种调压措施的分布式光伏消纳能力研究[J].电力系统保护与控制,2018,46(8):10-16.
[10]贾科,顾晨杰,毕天姝,等.大型光伏电站汇集系统的故障特性及其线路保护[J].电工技术学报,2017,32(9):189-198.
[11]尹青,杨洪耕,马晓阳.考虑多重不确定参数的配电网概率无功优化[J].电力系统保护与控制,2017,45(7):141-147.
[12]薛峰,蔡云峰,徐宁,等.基于功率解耦控制的并网光伏发电系统机电暂态模型[J].电力系统保护与控制,2017,45(9):63-70.
[13]殷自力,郑佩祥,陈宇星,等.含电动汽车和分布式电源的配电网的可靠性评估[J].电力系统保护与控制,2017,16(24):77-83.
[14]张骁,胡忠平,时金林,等.家用光伏储能系统的设计与实现[J].电子设计工程,2017,25(19):165-169.
[15]李泽彬,姚有峰,张飞龙,等.基于单片机的智能家居语音控制系统设计[J].电子设计工程,2017,25(8):175-177.