Low-voltage power distribution network electric energy replacement high-efficiency energy-saving control system and application method thereof

Abstract

The invention discloses a low-voltage power distribution network electric energy replacement high-efficiency energy-saving control system and an application method thereof. The control system comprises a system optimization controller and a plurality of meter box-type energy-saving governing devices, wherein the meter box-type energy-saving governing device comprises a meter box body and an activecompensation unit which is arranged in the meter box body and has harmonic governance, reactive compensation and three-phase imbalance adjustment functions; the active compensation units are arrangedin parallel in a line of a transformer outgoing line end of a low-voltage power distribution network and a line tail end; and control ends of the active compensation units are respectively connectedwith the system optimization controller through a network. The system has the functions of harmonic governance, reactive compensation and three-phase imbalance adjustment, and the system optimizationcontroller serves as a core control unit of a coordinated control electric energy replacement high-efficiency energy-saving control system, so that ordered and high-efficiency operation of each meterbox-type energy-saving governing functional unit can be realized.

Description

technical field [0001] The invention belongs to power electronics technology, and relates to the comprehensive optimization and management of power quality under the scenario of low-voltage distribution network power replacement, in particular to a low-voltage distribution network power replacement high-efficiency energy-saving control system and an application method thereof. Background technique [0002] As the country attaches great importance to environmental protection, it vigorously advocates the development and application of electric energy substitution industries and technologies such as replacing coal with electricity, replacing oil with electricity, and replacing gas with electricity. Combining and applying electric energy substitution technology to rural production and living industries, thereby eliminating the harm to the environment caused by coal or oil as energy sources. At present, it has become a development trend to use electric energy as the energy source...

AI Technical Summary

Problems solved by technology

With the extensive application of electric energy replacement devices in the low-voltage distribution network, it not only causes more power supply and consumption problems, but also increases the line loss of the low-voltage distribution network, which puts a greater pressure on the operation and maintenance management of the distribution network.

Therefore, there is a large gap between the current situation of high line loss rate and low power supply quality of the low-voltage distribution network in the electric energy substitution scenario and the target requirements of high power supply reliability and power supply quality of the distribution network, which restricts the development of the electric energy substitution industry. Traditional distribution network energy saving and loss reduction schemes or power quality optimization management cannot solve the problems of line loss and power supply quality at the same time, so it is urgent to propose an effective low-voltage distribution network power replacement high-efficiency energy-saving control system and its application method

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