Electricity-saving method for medium and low voltage distribution network

A low-voltage distribution network and distribution network technology, applied in the direction of AC network voltage adjustment, multi-phase network asymmetry reduction, multi-phase network elimination/reduction of asymmetry, etc. Or the system cannot coordinate optimal control and other problems in a unified way, so as to achieve the effect of easy operation, applicability and usability, and strong controllability.

Active Publication Date: 2014-04-23
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0004] The power-saving method for medium and low-voltage distribution networks provided by the present invention aims to overcome the shortcomings in the prior art that various distribution network equipment or systems cannot be coordinated uniformly for systematic optimization control and loss reduction and power saving

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  • Electricity-saving method for medium and low voltage distribution network
  • Electricity-saving method for medium and low voltage distribution network
  • Electricity-saving method for medium and low voltage distribution network

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Embodiment Construction

[0024] The invention adopts the connotative power-saving method, centering on the three core points of "balanced three-phase load", "optimization of reactive power flow" and "operating voltage regulation", without increasing or reducing the investment in the power grid, by establishing a medium and low voltage distribution network The power-saving decision-making level applies globally, firstly adjusts the three-phase active load on the low-voltage side of the station area to achieve the balance of the three-phase active load on the low-voltage side of the station area, and then compensates and adjusts the three-phase reactive power on the low-voltage side of the station area to realize Three-phase reactive power compensation and balance on the low-voltage side of the station area. On the basis of the reactive power balance on the low-voltage side of the station area and the power factor reaching the standard, the common compensation capacitor is further invested to realize zero...

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Abstract

The invention relates to the field of grid control, in particular to an electricity-saving method for a medium and low voltage distribution network. The invention provides the electricity-saving method for the medium and low voltage distribution network. The invention adopts a systematic thinking to save electricity for the medium and low voltage distribution network, and has the advantages of strong controllability, high reliability, easy operation, high practicability and the like. The invention adopts a content electricity-saving method, investment in the distribution network is not increased, reformation investment is small, and systematic and huge electricity saving is realized based on the existing communication network and a third-party system. The invention considers the communication compatibility of master station software, satisfies different kinds of distribution network equipment, the connection communication of the third-party system and the analytic interaction of specifications with different standards, and realizes the largest applicability and usability of application.

Description

technical field [0001] The invention relates to the field of power grid control, in particular to a power saving method for medium and low voltage distribution networks. Background technique [0002] As my country's power grid construction enters a period of gradual improvement, the power grid is large in scale, highly complex, and covers a wide area. The output effect is not good, and the recovery period is long. [0003] The power saving scheme of the power grid in the prior art is very correct in principle, and has achieved certain effects. However, the application of existing technical power grid power saving schemes cannot be integrated and systematically applied, and various distribution network equipment or systems cannot be coordinated uniformly for systematic optimization control and loss reduction and power saving. On the one hand, the investment cost is huge, and on the other hand, the corresponding power-saving effect is not satisfactory. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/26H02J3/18H02J3/12
CPCY02E40/50Y02E40/30
Inventor 翁军美王智平叶巨伟潘智豪徐发林郭爱华项建强林江
Owner STATE GRID CORP OF CHINA
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