Transient state event and steady state event monitoring method during electric energy classification metering process

Abstract

The invention discloses a transient state event and steady state event monitoring method during an electric energy classification metering process. The transient state event and steady state event monitoring method is suitable for being used for a non-intrusive load electric energy monitoring system, and is used to monitor a starting point of a transient state event and a starting point of a steady state event, and is used to solve problems of a classification metering system such as identification precision, calculation speed, and management efficiency. Data acquisition equipment and a virtual device are used to design a platform, and a voltage signal and a current signal of a user side are acquired, and then a power value is calculated to form a power sequence. The quantification and the median filtering preprocessing of the acquired data are carried out to reduce influences of spike noises and isolated noise points on the measurement of the starting point of the transient state event and the starting point of the steady state event. The starting point of the transient state event is acquired by adopting a transient state event starting point calculation method, and the starting point of the steady state event is acquired by adopting a steady state event starting point calculation method, and the operation state of the load is determined. The transient state event and steady state event monitoring method has advantages of high precision, easy realization, and applicability in fields such as high-level measurement system of intelligent power grid and electric energy demand side management.

Description

technical field [0001] The invention relates to a monitoring method for transient and steady-state events in the process of electric energy classification and measurement, which is especially suitable for a non-invasive load electric energy monitoring system and belongs to the fields of electric energy measurement and digital signal processing. Background technique [0002] Power load monitoring technology is of great significance in power system. It is conducive to improving the load composition, guiding users to consume reasonably, reducing electricity costs, and at the same time playing a positive role in optimizing the allocation of national power resources. According to the location where the monitoring module is installed, the power load monitoring methods can be divided into two types: intrusive and non-intrusive. Non-intrusive load monitoring (NILM) was first proposed by Hart. By installing monitoring equipment at the entrance of the user's electricity, or integrati...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a monitoring method for transient and steady-state events in the process of classified metering of electric energy, to accurately monitor the starting point of transient events and steady-state events under a non-invasive load decomposition system, and to solve the problems of classified metering systems. Issues such as recognition accuracy, operation speed and management efficiency

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