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Current-limiting controllable phase shifter and control method thereof

A control method and phase shifter technology, applied in AC network circuits, electrical components, circuit devices, etc., can solve the problems of electromagnetic ring network contradictions, poor reliability of distribution network open-loop, etc., to promote local consumption and loop closure. High reliability and the effect of optimizing power flow adjustment

Pending Publication Date: 2022-07-08
JIANGSU ELECTRIC POWER RES INST +1
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Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to provide a current-limiting controllable phase shifter and its control method that can realize the AC loop closure of the distribution network and solve the contradiction between the poor reliability of the open-loop operation of the distribution network and the electromagnetic ring network in the closed-loop operation

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  • Current-limiting controllable phase shifter and control method thereof
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  • Current-limiting controllable phase shifter and control method thereof

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Embodiment Construction

[0018] The technical solutions of the present invention will be described in detail below with reference to the specific embodiments and the accompanying drawings.

[0019] like figure 1 As shown, the current limiting controllable phase shifter of the present invention includes a controllable phase shifter, a current limiting reactor, a fast bypass switch K1 and a fast tie switch K2, wherein the controllable phase shifter, the current limiting reactor and the The quick tie switch K2 is connected in series, and the two ends of the current limiting reactor are connected in parallel with the quick bypass switch K1. The current-limiting controllable phase shifter of the invention is installed at the loop closing point of the distribution network, realizes the interconnection of the AC system of the distribution network, and improves the power supply capacity of the distribution networks on both sides. The controllable phase shifter can be a mechanical controllable phase shifter, ...

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Abstract

The invention discloses a current-limiting controllable phase shifter and a control method thereof.The current-limiting controllable phase shifter is installed at a loop closing point of a power distribution network to achieve alternating-current loop closing of the power distribution network, the current-limiting controllable phase shifter comprises a controllable phase shifter body, a current-limiting reactor and a quick interconnection switch K2 which are connected in series, and the two ends of the current-limiting reactor are connected with a quick bypass switch K1 in parallel; and different running states of the distribution network are adapted by controlling each component. Alternating-current loop closing of the distribution network can be realized, the contradiction between the poor reliability of open-loop operation of the distribution network and the existence of an electromagnetic loop network in closed-loop operation is solved, the equipment cost is low, the occupied area is saved, meanwhile, power flow control is realized through access, and local consumption of new energy can be greatly promoted.

Description

technical field [0001] The invention belongs to the field of flexible AC equipment and its control and protection, in particular to a current-limiting controllable phase shifter and a control method thereof. Background technique [0002] The existing distribution network has a single structure, and the open-loop operation is generally adopted, but the reliability of power supply is poor. The use of closed-loop power supply can improve the operating economy and reliability of the power distribution system to a certain extent. The application scenarios of the method are extremely limited. [0003] Regional interconnection can be achieved through power electronic equipment such as flexible DC systems, but there are problems such as low reliability, high investment, complex operation and maintenance, and limited application scenarios. SUMMARY OF THE INVENTION [0004] Purpose of the invention: The purpose of the present invention is to provide a current-limiting controllable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00Y02E60/60
Inventor 林金娇高磊李鹏孔祥平郑明忠王晨清
Owner JIANGSU ELECTRIC POWER RES INST
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