Unified fault locating method for comprehensive energy system

Abstract

The invention discloses a unified fault locating method for a comprehensive energy system. The method comprises the steps of firstly extracting typical characteristic quantities of energy subsystems of a data collection apparatus through data preprocessing and standardizing the typical characteristic quantities; secondly aggregating heterogeneous characteristic quantities into a high-dimensional matrix in space and time; and thirdly performing nonlinear dimension reduction on the matrix by utilizing Isomap and the like, and based on the value of a local sparsity coefficient and a node association relationship, performing fault identification and locating on the comprehensive energy system. Different characteristic quantities among a power system, a natural gas system and a thermal system are coupled into a comprehensive characteristic quantity in a unified way, so that the fault identification precision is improved; and massive data of the comprehensive energy system is fully utilized,the barrier and limitation of a single system are broken through, and unified fault locating of the comprehensive energy system is realized.

Description

technical field [0001] The invention relates to the field of safety analysis of an integrated energy system, in particular to a unified fault location method for an integrated energy system. Background technique [0002] Energy is an important material basis for human survival and development. At present, with the increase of energy consumption, a large number of distributed energy sources are connected to the grid, as well as subjective and objective factors such as demand and concept renewal, highlighting the limitations of the existing energy system architecture and the contradiction between supply and demand. The Energy Internet based on the concept of the Internet can provide a feasible solution. The Energy Internet is a new type of open system that integrates information and energy. It will transform or even subvert the existing energy industry, realize a decentralized production model, greatly improve energy use efficiency, and promote the large-scale development of ...

AI Technical Summary

Problems solved by technology

Therefore, no matter which subsystem fails, it may cause cascading failures and affect other energy subsystems, which will eventually pose a threat to the economical and reliable operation of the integrated energy system.

However, due to differences in physical characteristics, mature protection methods in various fields are difficult to apply to other subsystems; at the same time, due to the high degree of coupling of each energy subsystem, it is difficult to uniformly identify whether it is a fault in the power grid, natural gas or thermal system and its location just bigger

Images