Mobile power flow control and ice melting system and control method

A technology of power flow control and centralized control system, which is applied to AC networks with different sources of the same frequency, cable installation, overhead line/cable equipment, etc. Ice melting function and other problems, to achieve the effect of realizing power flow control, improving operating performance and reliability, and simple wiring

Active Publication Date: 2021-06-22
HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly solves the technical problems that the original grid power flow control mode is inflexible, has poor adjustment performance and does not have the ice melting function; it provides a mobile power flow control and ice melting system and a control method, which can be used according to the grid structure and working conditions , mobile to achieve optimal control of power flow in different areas of the power grid in different periods, and to achieve thawing of different lines in the power grid, improve the operational performance and reliability of the overall system, and better utilize the advantages of the series compensator to optimize the power flow of the system

Method used

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  • Mobile power flow control and ice melting system and control method
  • Mobile power flow control and ice melting system and control method

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Embodiment

[0031] Embodiment: A mobile power flow control and ice melting system of this embodiment, such as figure 1 As shown, it includes the centralized control system 1 and the power flow control and ice-melting system installed on each phase power. The power flow control and ice-melting system set on each phase power is connected in series to the transmission line 5. The system includes N series compensation modules 2 arranged in series in a centralized manner. The series compensation modules 2 arranged in series in a centralized manner are arranged in a container 3, where N is a natural number and greater than 1. The series compensation module includes a converter unit 21, an energy-taking unit 22, The control unit 23 and the first-type bypass device 24, the commutation unit includes 4 power tubes, a resistor and a capacitor, and the 4 power tubes are electrically connected in a full-bridge manner. The first pin of the power tube full-bridge electrical connection is connected to the...

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Abstract

The invention discloses a mobile power flow control and ice melting system which comprises a centralized control system and power flow control and ice melting systems arranged on each phase of power, and is characterized in that each power flow control and ice melting system comprises N series compensation modules which are arranged in series in a centralized manner, and the N series compensation modules which are arranged in series in the centralized manner are arranged in at least one container; n is a natural number and greater than 1, each series compensation module comprises a current conversion unit, an energy taking unit, a control unit and a first type of bypass device, and the current conversion unit is electrically connected with the energy taking unit and the first type of bypass device. The invention further discloses a control method of the mobile power flow control and ice melting system. According to the power grid structure and working conditions, power flow optimization control of different areas of a power grid in different periods can be movably achieved, ice melting of different lines of the power grid is achieved, the operation performance and reliability of the whole system are improved, and the advantage that the series compensator optimizes the power flow of the system is better exerted.

Description

technical field [0001] The invention relates to the technical field of flexible power transmission in power systems, in particular to a mobile power flow control and ice-melting system and a control method. Background technique [0002] With the interconnection of large-scale power systems and the use of various new equipment, the scale and complexity of the power system have also increased while making power generation and transmission more economical and efficient; coupled with a large number of distributed power generation systems connected to the grid , so that the traditional fixed power flow transmitted from the transmission network to the distribution network is reversed; the continuous growth of user load requires power flow control means to improve the existing power transmission capacity; the complex power exchange between the booming smart grid and the power market requires Frequent flow optimization control. On the other hand, the icing of power transmission lin...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H02J3/06H02G7/16H02G1/02
CPCH02J3/06H02G7/16H02G1/02
Inventor沈建良楼平吴国强管敏渊周平马爱军吴健潘磊林艺哲马秀达任铁强
OwnerHUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD