基于有源电力滤波器的配电网治理研究
发布时间：2018-08-21 20:45
【摘要】：电力系统配电网中往往存在功率因数过低、谐波等问题,这些问题会对电网的运行造成一定的影响,本课题的研究旨在降低电网中的功率因数过低和谐波等问题对电网的影响。随着电力电子技术的发展,针对电力系统中存在的功率因数过低、谐波的问题,有源电力滤波器由于其明显的优势,取代了传统的无源电力滤波器,被广泛地应用于电力系统配电网中。本课题的研究首先是借助于MATLAB/SIMULINK的仿真平台研究传统的基于瞬时无功功率理论的p、q运算方式和pi、qi运算方式,提出采用一种改进型的运算方式-改进型pi、qi运算方式。其次,由于双闭环控制策略具有响应速度快、工程实现容易等优点,针对江西配电网存在负载电流畸变、功率因数过低等问题,在本课题的研究中针对低压动态补偿装置提出采取检测负载电流的双闭环控制策略。再次,依据RTDS测试装置对信号的要求,设计RTDS的扩展标准接口电路板,用于连接实物控制器与RTDS从而构建仿真模型,测试结果显示结合实物控制器的RTDS仿真测试结果优于传统的纯软件仿真测试,与实际结果更为接近。研发的扩展标准接口电路板具有通用性,扩展了RTDS测试装置的使用范围。最后,基于RTDS的APF控制器仿真测试和现场测试,两种结果吻合,验证了扩展标准接口电路板的有效性和准确性,扩展了RTDS的应用范围,节省了人力和物力,证明了结合实物控制器的实时数字仿真测试的有效性。同时,通过APF控制器仿真测试内容提出了测试标准方法,包括直流侧稳压试验,正常运行试验(限流能力试验、补偿效果试验和动态响应试验)以及异常状态下的保护试验(电压波动和频率波动)。提出的测试标准方法在类似的工程上,对逆变器装置具有良好的通用性。
[Abstract]:There are many problems in power distribution network, such as low power factor and harmonic. These problems will affect the operation of power system. The purpose of this paper is to reduce the influence of low power factor and harmonic on power system. With the development of power electronics technology, active power filter (APF) has replaced the traditional passive power filter (APF) because of its obvious advantages, aiming at the problems of low power factor and harmonic in power system. It is widely used in distribution network of power system. In this paper, firstly, with the help of the simulation platform of MATLAB/SIMULINK, we study the traditional PQ and PIQI operation methods based on instantaneous reactive power theory, and propose an improved PIQI operation mode, which is an improved operation mode, which is based on the theory of instantaneous reactive power. Secondly, because the double closed loop control strategy has the advantages of fast response speed and easy engineering implementation, there are some problems in Jiangxi distribution network, such as load current distortion, low power factor and so on. In this paper, a double closed loop control strategy to detect load current is proposed for low voltage dynamic compensation device. Thirdly, according to the signal requirement of RTDS testing device, the extended standard interface circuit board of RTDS is designed, which is used to connect the physical controller and RTDS to build the simulation model. The test results show that the RTDS simulation results combined with the physical controller are better than the traditional pure software simulation tests, and are closer to the actual results. The developed extended standard interface circuit board is universal and extends the scope of use of RTDS test device. Finally, the simulation test and field test of APF controller based on RTDS are carried out. The two results agree well with each other, which verify the validity and accuracy of the extended standard interface circuit board, extend the application range of RTDS, and save manpower and material resources. The validity of real-time digital simulation test combined with real-object controller is proved. At the same time, through the APF controller simulation test content, proposed the test standard method, including the DC side voltage stability test, the normal operation test (current limiting capacity test), Compensation effect test and dynamic response test) and protection test under abnormal state (voltage fluctuation and frequency fluctuation). The proposed test standard method has good generality for inverter devices in similar projects.
【学位授予单位】：南昌大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN713.8;TM761
[Abstract]:There are many problems in power distribution network, such as low power factor and harmonic. These problems will affect the operation of power system. The purpose of this paper is to reduce the influence of low power factor and harmonic on power system. With the development of power electronics technology, active power filter (APF) has replaced the traditional passive power filter (APF) because of its obvious advantages, aiming at the problems of low power factor and harmonic in power system. It is widely used in distribution network of power system. In this paper, firstly, with the help of the simulation platform of MATLAB/SIMULINK, we study the traditional PQ and PIQI operation methods based on instantaneous reactive power theory, and propose an improved PIQI operation mode, which is an improved operation mode, which is based on the theory of instantaneous reactive power. Secondly, because the double closed loop control strategy has the advantages of fast response speed and easy engineering implementation, there are some problems in Jiangxi distribution network, such as load current distortion, low power factor and so on. In this paper, a double closed loop control strategy to detect load current is proposed for low voltage dynamic compensation device. Thirdly, according to the signal requirement of RTDS testing device, the extended standard interface circuit board of RTDS is designed, which is used to connect the physical controller and RTDS to build the simulation model. The test results show that the RTDS simulation results combined with the physical controller are better than the traditional pure software simulation tests, and are closer to the actual results. The developed extended standard interface circuit board is universal and extends the scope of use of RTDS test device. Finally, the simulation test and field test of APF controller based on RTDS are carried out. The two results agree well with each other, which verify the validity and accuracy of the extended standard interface circuit board, extend the application range of RTDS, and save manpower and material resources. The validity of real-time digital simulation test combined with real-object controller is proved. At the same time, through the APF controller simulation test content, proposed the test standard method, including the DC side voltage stability test, the normal operation test (current limiting capacity test), Compensation effect test and dynamic response test) and protection test under abnormal state (voltage fluctuation and frequency fluctuation). The proposed test standard method has good generality for inverter devices in similar projects.
【学位授予单位】：南昌大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN713.8;TM761
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