CAJ | 학술논문

∶为防止直流系统纹波系数严重超标对电力系统安全运行造成影响，文章对直流系统纹波超标的危害进行了分析，探讨了引起纹波超标的常见原因主要是：负荷电源问题、测试方法不当、充电模块问题、输入交流电源不合格等，结合生产实际，重点介绍了负荷电源及测试方法不当引起纹波超标原因，针对常见原因提出了防控措施。推荐介绍了实用纹波测试方法和技巧供同行参考，以避免实际测试工作中因测试方法和技巧差异引起纹波波形失真，导致纹波系数超标的情况发生。直流装置投入运行前后均应测试直流电压纹波，以便及时发现问题和解决问题，将直流系统安全隐患消除在萌芽状态。
∶위방지직류계통문파계수엄중초표대전력계통안전운행조성영향，문장대직류계통문파초표적위해진행료분석，탐토료인기문파초표적상견원인주요시：부하전원문제、측시방법불당、충전모괴문제、수입교류전원불합격등，결합생산실제，중점개소료부하전원급측시방법불당인기문파초표원인，침대상견원인제출료방공조시。추천개소료실용문파측시방법화기교공동행삼고，이피면실제측시공작중인측시방법화기교차이인기문파파형실진，도치문파계수초표적정황발생。직류장치투입운행전후균응측시직류전압문파，이편급시발현문제화해결문제，장직류계통안전은환소제재맹아상태。
To prevent the harmful influence of DC ripple coefficient exceeding standard on safe operation of power system, the paper analyzes the common causes resulting in ripple coefficient exceeding standard, including improper load power, test method, charging module and AC power supply input etc., and proposes appropriate countermeasures based on the practical production of Dahua general hydropower plant. The practical ripple test methods and tech-niques are recommended for reference to prevent ripple coefficient exceeding standard resulting from wave distortion by using of improper test methods and techniques. The DC voltage ripple must be tested before and after putting the DC devices into operation so as to find out and solve the problems timely and eliminate the potential safety problems in the bud.