CAJ | 학술논문

随着我国社会经济的快速发展，电力事业得到了长足的发展，各行各业对电力的需求量逐渐增多，电网的规模也逐渐扩大。在电网运行过程中，谐波不仅增加了电网运行的损耗，更对电网系统运行的安全与稳定造成很大影响。为了加强对电网谐波的管理，满足电力企业与用户双方的利益，首先需要对系统谐波阻抗、用户谐波发射水平进行准确的估算。该文提出了一种基于二元线性回归的估算方式。首先对公共连接点各次谐波电压与电流信号进行准确的测量，然后通过二次线性回归法，得出系统谐波阻抗值，最后估算出用户谐波发射水平。另外，该文还通过仿真实验、工程实例分析验证了该估算方法的有效性，希望对有关领域的工作者提供参考。
수착아국사회경제적쾌속발전，전력사업득도료장족적발전，각행각업대전력적수구량축점증다，전망적규모야축점확대。재전망운행과정중，해파불부증가료전망운행적손모，경대전망계통운행적안전여은정조성흔대영향。위료가강대전망해파적관리，만족전력기업여용호쌍방적이익，수선수요대계통해파조항、용호해파발사수평진행준학적고산。해문제출료일충기우이원선성회귀적고산방식。수선대공공련접점각차해파전압여전류신호진행준학적측량，연후통과이차선성회귀법，득출계통해파조항치，최후고산출용호해파발사수평。령외，해문환통과방진실험、공정실례분석험증료해고산방법적유효성，희망대유관영역적공작자제공삼고。
With the rapid development of our social economy, the electric power industry has been considerable development, all walks of life demand for electricity increased gradually, gradually expand the scale of power grid. In the operation of the elec?tric network, harmonic not only increases the loss of power grid, more has a great influence on the security and stability of power system operation. In order to strengthen the management of power harmonic, electric power enterprises and users to meet the in?terests of both sides, first needs to carry on the accurate estimation of system harmonic impedance and the harmonic emission lev?el. This paper presents an estimation method based on two element linear regression. First of all, at the point of common cou?pling of the harmonic voltage and current signals measured accurately, and then by two linear regression method, obtains the sys?tem harmonic impedance values, finally estimate the harmonic emission level user. In addition, this paper verifies the validity of the estimation method through the analysis of simulation experiment and engineering example, hoping to provide reference for the related field workers.