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A line reconstruction method and system with distributed small hydropower at the end

A technology for line transformation and small hydropower, applied in the direction of reducing greenhouse gases, energy reserves, climate sustainability, etc., can solve the problem of underutilization of clean energy such as small hydropower, imbalanced energy distribution and load distribution, and threats to power grid security. and other problems, so as to solve the low utilization rate of hydropower resources, improve the utilization rate of hydropower resources, and improve the reliability of power supply.

Active Publication Date: 2021-06-25
GUANGDONG SHUNDE POWER DESIGN INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of power grid design and transformation, the energy distribution and load distribution are often unbalanced. Some of the small hydropower energy is distributed at the end of the main power distribution line. During the wet season, the high voltage at the end of the main line will threaten the power grid. Safety. In order to maintain voltage stability, the power grid trips and discards water, which leads to the underutilization of clean energy such as small hydropower. In view of this situation, it is necessary to provide a line transformation method

Method used

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  • A line reconstruction method and system with distributed small hydropower at the end
  • A line reconstruction method and system with distributed small hydropower at the end
  • A line reconstruction method and system with distributed small hydropower at the end

Examples

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Effect test

Embodiment 1

[0039] A line reconstruction method with distributed small hydropower at the end, using the trunk line with distributed small hydropower at the end as line A, and building an energy storage switching station at the end of line A with at least bus I, bus II and an energy storage system, Establish a microgrid with energy storage switch station as the auxiliary and microgrid control system, connect line A to bus I, connect new or existing line B to bus II, connect small hydropower, energy storage system or new or The existing load branch line is connected to bus I and bus II in a 3 / 2 connection mode, and is actually connected to the bus under the control of the micro-grid control system, and the energy storage system controlled by the micro-grid control system is charged and discharged.

[0040] The present invention builds a microgrid at the end of the line with distributed small hydropower, which is assisted by an energy storage switch station, and realizes the coordinated opera...

Embodiment 2

[0046] Such as figure 1 As shown, a line transformation system with distributed small hydropower at the end, including line A, line B, an energy storage switch station at the end of line A, and a microgrid based on the energy storage switch station; the end of line A has Distributed small hydropower, the energy storage switching station has a bus I, a bus II and an energy storage system, the microgrid has a microgrid control system located in the energy storage switching station; the line A is connected to the bus I, the Line B is connected to busbar II, the small hydropower and energy storage system are connected to busbar I and busbar II in a 3 / 2 connection mode, and the microgrid control system controls the actual access to the busbar, and the microgrid control system controls the energy storage system Discharge. It also includes load branch lines, which are connected to bus I and bus II in a 3 / 2 connection mode and are actually connected to the bus by the micro-grid contr...

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Abstract

The invention belongs to the technical field of power distribution line transformation, and discloses a line transformation method with distributed small hydropower at the end. The trunk line with distributed small hydropower at the end is used as line A, and at the end of line A, at least busbar I, Bus II and the energy storage switching station of the energy storage system, set up a microgrid with the energy storage switching station as an auxiliary and a microgrid control system, connect the line A to the bus I, and connect the newly built or existing line B to the bus II , connect the small hydropower, energy storage system or new or existing load branches to bus I and bus II in a 3 / 2 connection, and the actual access to the bus is controlled by the micro-grid control system, and the micro-grid control system controls the energy storage system Discharge. The present invention builds a new microgrid at the end of the line with distributed small hydropower, which is assisted by an energy storage switch station, and realizes the coordinated operation of source (small hydropower)-grid-load-storage through the microgrid.

Description

technical field [0001] The invention relates to the technical field of power distribution line reconstruction, and more particularly, to a line reconstruction method and system with distributed small hydropower at the end. Background technique [0002] The power grid is a whole composed of substations of various voltages and transmission and distribution lines in the power system, including three units of transformation, transmission, and distribution. The task of the grid is to transmit and distribute electrical energy and to change the voltage. Power distribution is a link in the power system that is directly connected to users and distributes electric energy to users. The distribution system consists of distribution substations, high-voltage distribution lines, distribution transformers, low-voltage distribution lines and corresponding control and protection equipment. In the process of power grid design and transformation, the energy distribution and load distribution ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/28
CPCH02J3/28H02J3/38Y02E70/30
Inventor 麦惠俊覃干卿尤毅郭燕羽陈戈邹杰平史勤防叶子忠彭国飞温彩健刘鹤峰江国华丁宜梁永全蒋粤群李箭
Owner GUANGDONG SHUNDE POWER DESIGN INST CO LTD
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