500 KV High Voltage Reactor Installed Before And After Voltage Comparison In Yantan Power Station

With the uneven distribution of power generation and electricity distribution in China,ultra-high voltage long-distance power transmission has become the inevitable trend of China's power industry development.In the process of ultra-high voltage long-distance power transmission,when the line is in no-load or light load and when the line at the end of the frequency of over-voltage,must compensate for inductive reactive power and then avoid frequency over voltage phenomenon.The traditional fixed capacity reactor is less flexible and difficult to meet the actual needs.In this paper,the controllable high voltage reactor is used to compensate the reactive power in the transmission line.The specific research contents include:(1)The reactive power characteristics of the EHV transmission line and the inductive reactive power compensation are studied.The EHV line is modeled in the process of research.On the basis of the model,the reactive power characteristics and compensation of the UHV circuit Effect,and finally to compensate for reactive power used by the type of parallel capacitor and the role of analysis,select the appropriate parallel reactor.(2)Introduce the principle of the reactor,the current situation of the line in Yantan Power Plant,and the installation of the reactor in Yantan Power station need to be reconstructed,the construction of the line transformation scheme,first of all through the line needs to be reconstructed part of the introduction,then the installation of the reactor need to increase the pole design,at the same time for the application Finally,the correctness of the design modification is verified through actual verification.(3)Based on the analysis of the generator's voltage regulation ability through the relevant test data report of the excitation regulation system of the generator,the voltage regulation function of the generator is determined to ensure the stability of the power grid system,the maximum phase-in capacity when the generator is no-load voltage regulation,and the voltage compensation capacity of the system is determined to ensure the stability of the power system.(4)First,the basic parameters of the reactor and related auxiliary equipment are introduced.Then the method of the reactor connection is designed.At the same time,the construction and acceptance of the equipment are explained.Finally,the installation of the reactor is guaranteed by the actual scheme.(5)The controllable high voltage reactor is designed and analyzed.And the control of the high voltage reactor before and after the operation of the data comparison,through comparative analysis shows that the use of this design of the high-voltage reactor to compensate for reactive power can effectively prevent the occurrence of over-voltage phenomenon,improve the voltage pass rate,but also Effectively improve management factors.