An online monitoring and evaluation system of generator excitation system based on wams dynamic data

Abstract

The invention relates to a WAMS-dynamic-data-based on-line monitoring and evaluation system for an excitation system of a generator. The system comprises a generator state monitoring system, an evaluation module of low-frequency oscillator effect suppression effect by an excitation regulator power system stabilizer (PSS), and an excitation regulator restriction and protection motion correctness evaluation module. Real-time calculation and monitoring of a generator operation state index, capability evaluation of low-frequency oscillation suppression by an excitation regulator power system stabilizer (PSS), and on-line evaluation on correctness of excitation regulator restriction and protection motion are realized. According to the invention, with the means of on-line equipment monitoring, a monitoring evaluation platform of a generator excitation system is established; and the generator excitation system operation state is monitored remotely in real time so as to find a factor affecting safe and stable operation of a power grid by a power side timely. Meanwhile, an auxiliary tool and a convenient means are provided for rapid positioning of an excitation system problem by the power gird scheduling operation staff.

Description

technical field [0001] The invention belongs to the field of dynamic monitoring of electric power systems, and in particular relates to an online monitoring and evaluation system of a generator excitation system based on dynamic data of a power grid wide-area measurement system (ie WAMS). Background technique [0002] With the continuous expansion of the scale of the national interconnected power grid, the stability of the power system has attracted much attention. Among them, generator excitation control is one of the most economical and effective methods to maintain a constant machine terminal voltage and a reasonable distribution of reactive power between parallel operating units, and to improve and enhance the stability of the power system. But for a long time, there is a lack of a method system to evaluate the effectiveness of the generator excitation system based on the measured data. [0003] With the development of phasor measurement unit (PMU) and wide area measure...

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Problems solved by technology

However, for a long time, there has been a lack of a method system for evaluating the effectiveness of the generator excitation system based on measured data.

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