CAJ | 학술논문

基于感受阻抗的接地距离保护整定计算方法在电力系统中得到了广泛应用。该方法的正确性与实际测量参数的正确性密切相关。实际工程中，由于同杆输电线路的零序参数可能存在误差，使得该方法所得的整定值可能产生误差，严重时将造成保护Ⅰ段误动，威胁系统的安全稳定运行。分析了同杆输电线路零序参数的误差对基于感受阻抗的接地距离保护Ⅰ段的影响，提出了计及零序参数误差在接地距离保护 I 段中的整定方案。
기우감수조항적접지거리보호정정계산방법재전력계통중득도료엄범응용。해방법적정학성여실제측량삼수적정학성밀절상관。실제공정중，유우동간수전선로적령서삼수가능존재오차，사득해방법소득적정정치가능산생오차，엄중시장조성보호Ⅰ단오동，위협계통적안전은정운행。분석료동간수전선로령서삼수적오차대기우감수조항적접지거리보호Ⅰ단적영향，제출료계급령서삼수오차재접지거리보호 I 단중적정정방안。
The setting calculation method of grounding distance protection based on detecting impedance has been widely used in the power system. The validity of it is closely related to the correctness of the actual measured parameters. In the practical engineering pro-ject, the existing zero sequence parameters error of the transmission lines on the same tower might cause error of the setting value, and consequently may cause malfunction of zone 1 ground distance protection in the worse circumstances, thus threatening the security and stability of the power system operation. This paper analyzes the effect of the correctness of zero sequence parameters of the transmis-sion lines on the same tower to the zone 1 ground distance protection based on detecting impedance, and proposes a setting scheme of the zone 1 ground distance protection considering zero sequence parameters error.