A Method for Generating Open-loop Partitioning Schemes of Electromagnetic Ring Networks Considering Regional Source-Load Balance

Abstract

A method for generating an electromagnetic ring network open-loop partition scheme considering regional source-load balance, comprising the following process: Step 1: constructing an open-loop grid equivalent model considering source-load electrical characteristics; Step 2: combining the open-loop grid equivalent Model, adopting the 500kV substation combination backup strategy considering source-load balance, determining the 500kV substation combination backup combination to obtain the 500kV substation center search starting point set; Step 3: Proposing a dynamic partition principle based on modularity, using the 500kV substation determined in The starting point of the center search is the center, and the 220kV substation nodes are searched through the Dijkstra algorithm and added to each partition to generate an open-loop partition scheme. This method constructs an equivalent model of the open-loop power grid considering the electrical characteristics of source-load, and proposes a 500kV substation combined backup strategy considering source-load balance, which can avoid short-circuit current sources caused by unreasonable combined backup of 500kV substations Add questions.

Description

technical field [0001] The invention belongs to the technical field of power systems, and in particular relates to a method for generating an open-loop partition scheme of an electromagnetic ring network considering regional source-load balance. Background technique [0002] With the continuous operation of UHV projects, the structure of the high and low voltage electromagnetic ring network is becoming increasingly tight. An overly tight electromagnetic ring network structure can easily lead to problems such as excessive short-circuit current at some sites and an increase in the risk of cascading failures in the system, thus posing a threat to the safe and stable operation of the power grid. The electric power guideline (prior art 1) has clearly pointed out that the electromagnetic ring network should be reasonably opened-loop partitioned in a timely manner, and the hidden dangers of safe operation caused by the ring network should be eliminated as much as possible. Therefo...

AI Technical Summary

Problems solved by technology

The above technical methods provide a meaningful exploration for the generation of power grid partitioning schemes, and their ideas are very worthy of reference, but there are still shortcomings, such as low calculation efficiency, strong subjectivity of the partitioning principle, and the simplified equivalent model of the power grid constructed ignores source These limitations often affect the effectiveness of electromagnetic ring network planning

Images