An electric energy metering device with electric energy quality monitoring

Abstract

The invention relates to an electric energy metering device with an electric energy quality monitoring function. The electric energy metering device comprises an electric energy integrated data acquiring terminal, a transmission subsystem and a background management subsystem, wherein the electric energy integrated data acquiring terminal is connected with the background management subsystem through the transmission subsystem and is arranged in an outgoing line switch cabinet of a transformer substation; and the electric energy integrated data acquiring terminal is used for acquiring voltages of all bus sections and currents of all feed lines of the transformer substation in real time to obtain electric energy quality data and electric energy data, and the transmission subsystem is used for transmitting the electric energy quality data and the electric energy data to the background management subsystem in real time. Compared with the prior art, the electric energy metering device has the advantages of multiple functions, high safety and reliability, good economical efficiency and the like.

Description

technical field [0001] The invention relates to an electric energy metering device, in particular to an electric energy metering device with electric energy quality monitoring. Background technique [0002] Power quality is a prominent issue that my country's power companies and governments are very concerned about. With the development of various industries in our country, the irregular use of users has gradually changed the load structure in our country. At the same time, it has also seriously affected the power quality. . [0003] So far, power quality monitoring devices can be divided into several forms such as portable, hand-held, and centralized. The main manufacturers of portable power quality monitoring devices at home and abroad are mainly LEM companies (representative device PQPT1000 / 1001), Swiss United Power UNIPOWER company (representative permanent device PM30), Shanghai Baosteel Anda Power Quality Co., Ltd. (representative device PQ116), etc. These together ca...

AI Technical Summary

Problems solved by technology

[0009] 1. Due to the use of various computers as on-site monitoring and analysis tools, the cost of equipment is relatively high;

[0010] 2. The flexibility and versatility of equipment configuration is poor, and it can only be used in specific operating environments;

[0011] 3. Poor real-time performance, backward time-frequency analysis methods, and lack of ability to track and capture instantaneous disturbances and transient harmonics;

[0012] 4. The ability of remote communication is limited, it is not easy to realize remote monitoring, data sharing and long-term evaluation and prediction, and the level of intelligence and networking is not high

[0013] 5. The ability to classify interference and identify faults is limited, does not have intelligent analysis functions, and cannot provide users with information directly used for decision-making;

[0014] 6. The on-site equipment does not have real-time analysis capabilities, and a large amount of collected data must be transmitted to special analysis tools for processing, resulting in a large requirement for the storage capacity of the on-site equipment

[0015] The insufficiency of the equipment itself not only affects the on-site monitoring, but also affects the functions of the entire system. For example, the real-time performance of the on-site equipment is not good, and the ability to identify transient disturbances is poor, which will affect the system's rapid response to problems, power quality assessment capabilities and decision-making. Skills of analyze

[0016] In addition, the existing electric energy metering system only has a single function of electric energy metering, and does not have functions such as data storage, power quality analysis, and fault recording.

Moreover, there is no electric energy metering device installed at each outgoing line end of the distribution station, so it is impossible to monitor and record the electric energy situation at each outgoing line end

Electric energy metering and power quality analysis devices are two separate terminal systems, and there is currently no integrated system device

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