Generator set power distribution network access control method and control system

Abstract

The invention discloses a generator set power distribution network access control method. The method comprises the following steps: monitoring a power grid voltage signal and a grid-connected currentsignal of a power distribution network side of a generator set in real time; analyzing and adjusting the monitored real-time power grid voltage signal and grid-connected current signal; and obtaininga reactive adjusting signal, an active adjusting signal and a harmonic control signal for actively adjusting the voltage, the frequency and the harmonic waves of the grid-connected point of the generator set in combination with a control instruction sent by an energy management platform. The invention further discloses a generator set power distribution network access control system. According tothe invention, analysis and calculation are carried out on the real-time monitoring power grid voltage and the grid-connected current, and in combination with the energy management platform control instruction, the signals for actively adjusting the voltage, the frequency and the harmonic waves of the grid-connected point of the generator set are obtained, so that the generator set can actively participate in grid voltage and frequency adjustment and harmonic wave treatment while the current grid operation condition is stable, and active adjustment of the voltage, the frequency and the harmonic waves of the grid-connected point of the generator set is realized.

Description

technical field [0001] The invention relates to the field of access control of a generator set distribution network, in particular to a generator set distribution network access control method and a control system. Background technique [0002] At present, a large number of generator sets and load equipment are connected to the distribution network, so the distribution network is easily affected by the load equipment and power generation equipment, resulting in power quality problems such as voltage, frequency deviation, three-phase imbalance, and large harmonic content. In order to improve the power quality of the distribution network, most of them use passive or active power quality control devices to control the power quality of the power grid. Most generator sets are connected to the distribution network through converters, and their grid-connected control strategies are all implemented through converter controllers. Each generator set adapts to the voltage, frequency, ...

AI Technical Summary

Problems solved by technology

[0003] However, this existing technology for improving power quality still has the following defects: the power quality control device configured in the power grid significantly increases the investment cost of distribution network construction and operation and maintenance costs, and increases the complexity of distribution network space and control

Moreover, the generator set is only passively adapted to the performance requirements of the distribution network for voltage, frequency, harmonics, etc., and does not have the ability of self-regulation

[0004] It can be seen that the above-mentioned existing generator set distribution network access control method still has inconvenience and defects, and needs to be further improved urgently.

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