A high-efficiency energy-saving control system for replacing electric energy in low-voltage distribution network and its application method

Abstract

The invention discloses a high-efficiency energy-saving control system for replacing electric energy of a low-voltage distribution network and an application method thereof. Body and the active compensation unit with harmonic control, reactive power compensation, and three-phase unbalance adjustment functions inside the meter box, the active compensation unit is arranged in parallel at the transformer outlet and line of the low-voltage distribution network On the line at the end, the control terminals of the active compensation unit are respectively connected to the system optimization controller through the network. The invention has the functions of harmonic control, reactive power compensation, and three-phase unbalance adjustment. The system optimization controller, as the core control unit of the coordinated control electric energy instead of the high-efficiency energy-saving control system, can realize the orderly and high-efficiency of each meter-box type energy-saving control functional unit run.

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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