Heavy load and overload monitoring method for power distribution network line

Abstract

The invention relates to a heavy load and overload monitoring method for a power distribution network line. The method comprises the steps: exporting the standing book information such as current-carrying capacity, length and the like of a feeder line section by a PMS system; transmitting the standing book information to a production control area DMS system of an area I through a GOMS interface via a management information area III; analyzing and calculating feeder sections of all lines in the DMS, analyzing and calculating real-time current-carrying capacity, comprehensive rated current-carrying capacity and serious overload duration, and setting a proportion to obtain heavy load and overload feeder sections; classifying the heavy load and overload feeder line sections, and judging whether the heavy load and overload feeder line sections belong to too small line diameters or too large loads in a power supply range in combination with a transformer ratio of an outgoing line switch CT in a substation; processing different types of heavy load and overload conditions in different modes; carrying out real-time visual alarm and display on the heavy load overload information; and performing statistics on different dimensions of historical heavy load and overload information. According to the invention, the rapid patrolling and monitoring of the heavy load and overload feeder line segment are realized, the advanced analysis of the operation trend of the power distribution network is realized, and a measure of actively adopting preventive regulation is provided.

Description

technical field [0001] The invention belongs to the field of electric power system automation, and in particular relates to a method for monitoring heavy and overload of distribution network lines. Background technique [0002] During the actual operation of the distribution network, due to grid maintenance or equipment failure, a special operation mode is required. Unplanned operation mode may cause the power equipment to be in a long-term heavy load and overload state. Abnormal operation will lead to equipment aging and affect the service life. If timely and effective measures are not taken, the situation will easily deteriorate, and may even lead to large-scale power outages. The existing fault research and judgment system of the DMS system only realizes heavy overload monitoring of feeder lines and distribution transformers in terms of heavy overload monitoring of lines, but lacks relatively sophisticated technical means in terms of wire sections and visual monitoring of...

AI Technical Summary

Problems solved by technology

[0002] During the actual operation of the distribution network, due to grid maintenance or equipment failure, a special operation mode is required, and the unplanned operation mode may cause the power equipment to be in a long-term heavy load and overload state

Abnormal operation will lead to equipment aging and affect the service life. If timely and effective measures are not taken, the situation will easily deteriorate, and may even cause large-scale power outages

The existing fault research and judgment system of the DMS system only realizes heavy overload monitoring of feeder lines and distribution transformers in terms of heavy overload monitoring of lines, but lacks relatively fine technical means in terms of wire sections and visual monitoring of branch lines. In addition, DMS research and judgment focuses on fault perception, In the application of positioning, there is a lack of auxiliary decision-making means for the whole process of fault isolation, load transfer and restoration of power transmission