A Synchronous Condenser Configuration Method for UHV DC Weak Receiver Power Grid

Abstract

The invention discloses a method for configuring a synchronous condenser of an UHV DC weak-receiving power grid. The method includes: establishing an optimal configuration model of a synchronous condenser, including reducing the amount reserved for maintaining the stability of the transient voltage of the weak receiving-end power grid. Based on the spinning reserve capacity of the generating set, constraints such as the number of configurable condensers in the substation, the spinning reserve capacity of the unit, and the transient voltage stability of the receiving power grid are considered. According to the sensitivity relationship between the rotating reserve capacity of the generating set and the dynamic reactive power configuration capacity of the node, determine the optimal configuration node order of the condenser in the weak receiving end power grid; use the optimal allocation node ordering and iterative method to obtain the optimal configuration node order of the condenser in the weak receiving end power grid. The optimal configuration number and capacity. The method of the invention can effectively improve the transient voltage support effect of the regulator on the weak receiving end power grid, release the rotating reserve capacity of the generating set, improve the load carrying capacity of the generating set during peak load periods, and has good engineering application value.

Description

technical field [0001] The invention relates to the technical field of dynamic reactive power configuration, in particular to a synchronous condenser configuration method for an UHV DC weak receiving end power grid. Background technique [0002] With the development of UHVDC transmission system and the increase of transmission power, the voltage stability problem of the DC receiving end power grid has become increasingly prominent. It is mainly reflected in the fact that UHV DC is generally fed into load-intensive areas, and the reactive power required during the rapid recovery process of its commutation failure increases significantly, resulting in insufficient dynamic reactive power support of the power grid in load-intensive areas, and a high risk of voltage instability in the receiving end power grid. At present, configuring dynamic reactive power compensation equipment in the UHV DC weak receiving end grid is an effective measure to improve the transient voltage stabili...

AI Technical Summary

Problems solved by technology

[0004] Considering that the main goal of synchronous condenser configuration in the prior art is to improve system transient voltage stability and suppress transient overvoltage, the configuration of synchronous condenser has not been optimized from the overall demand for voltage stability of UHV DC weak receiving end grid, thus It is difficult to give full play to the fast reactive power adjustment capability of the condenser to support the voltage of the receiving end grid

Images