High-voltage power distribution network reactive power control method based on gateway power factor linear constraint

Abstract

The invention provides a high-voltage power distribution network reactive power control method based on gateway power factor linear constraint in order to solve the problem that due to complex topological condition, a high-voltage power distribution network cannot achieve reactive layered on-spot balance. The method includes the specific steps that firstly, network structure parameters are collected, network operation parameters are read, network initial power flow is calculated, and target adjustment parameters are determined; secondly, by means of power factor adjustment targets at high-voltage gateways of 110 kV and 220 kV substations, switching of a substation lower-side compensation device is conducted, and accordingly on-spot reactive balance adjustment of the 110 kV substation and global reactive voltage adjustment of the 220 kV substation are conducted; finally, dynamic reactive adjustment is conducted on nodes which still cannot meet voltage safety constraint requirement, so that it is guaranteed that voltage of all nodes in a network run in a safe and economical range, and a final compensation device switching scheme is determined.

Description

Technical field [0001] The invention relates to a voltage and reactive power adjustment method of a power system, in particular to a reactive power control method of a high-voltage distribution network based on the linear constraint of the gateway power factor. Background technique [0002] At present, the power system distribution network has the characteristics of low level of automation, huge data, and complex topology. As a result, the system's reactive power and voltage adjustment capabilities often cannot meet the demand for “layered” in-situ balance of reactive power in the network. The problems of voltage quality and economic operation are becoming increasingly prominent. [0003] For the current grid characteristics and operation characteristics of high-voltage distribution networks, modern optimization algorithms will have problems such as difficulty in convergence or unreasonable convergence points. [0004] In view of the current status of reactive power planning in high...

AI Technical Summary

Problems solved by technology

[0002] At present, the distribution network of the power system has the characteristics of low automation level, huge data, and complex topology. As a result, the reactive power and voltage regulation capability of the system is often unable to meet the "layered" local balance requirements of reactive power in the network. The problem of voltage quality and economic operation is becoming more and more prominent

[0003] For the grid structure and operation characteristics of the current high-voltage distribution network, modern optimization algorithms will have problems such as convergence difficulties or unreasonable convergence points.

Images