Power regulating and controlling power transmission system with branch resistances

A technology of branch resistance and power regulation, applied in the field of electric power, can solve problems such as single function of power transmission system
CN106208081AInactive Publication Date: 2016-12-07GUANGDONG UNIV OF TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG UNIV OF TECH
Publication Date
2016-12-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a power regulating and controlling power transmission system with branch resistances. The power regulating and controlling power transmission system comprises an alternating-current power controllable unit and an alternating-current power natural control unit. The alternating-current power natural control unit comprises a first step-down transformer and switches. The alternating-current power controllable unit comprises a rectifier and an inversion branch unit, and the inversion branch unit comprises the branch resistances, inverters and second step-down transformers. According to the power regulating and controlling power transmission system, the alternating-current power controllable unit with a direct current resistance and the branch resistances is loaded between a high voltage bus and a power transmission line, and natural tidal current transmission and active power adjustment of electric energy are achieved through the alternating-current power controllable unit and the alternating-current power natural control unit to get ready for standby application. When the alternating-current power natural control unit conducts individual controls, the power transmission line outputs power according to the line and the load impedance, and natural power is formed; when the alternating-current power controllable unit conducts individually control, the constant current, constant voltage and constant power method is adopted, the output power of the power transmission line can be controlled, and controllable power is formed.
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Description

technical field

[0001] The invention relates to the technical field of electric power, in particular to a power regulation and control transmission system with branch resistors. Background technique

[0002] In traditional 110kV, 220kV, 500kV and other high-voltage and ultra-high-voltage AC transmission systems, the opening and disconnection of transmission lines are generally controlled by AC circuit breakers 100, such as figure 1 shown. The output power of the transmission line is distributed according to the natural flow, and is determined by the line impedance and load parameters. It is difficult to control the transmission power of the transmission line in real time through the mechanical AC circuit breaker 100 .

[0003] In modern power systems, AC and DC hybrid transmission technology is used. The principle of direct current transmission is to convert alternating current into direct current through a rectifier device, and then convert the direct current into altern...

Claims

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