Stability control device bypass-to-circuit switching method based on switch displacement
A technology for stabilizing control devices and switch displacement, which is applied to circuit devices, selective AC load connection devices, AC network circuits, etc., and can solve problems such as inability to switch
Pending Publication Date: 2021-10-19
GUANGXI POWER GRID CORP
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Problems solved by technology
[0003] The purpose of the present invention is to provide a switch displacement-based bypass switching method for a stabilizing device, which can solve the problem of using line current changes when the line and bypass switch currents are less than the no-current setting value when the line is light-loaded in the prior art. The problem of not being able to switch
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[0014] The present disclosure embodiment will be described in detail below with reference to the accompanying drawings.
[0015] The embodiments of the present disclosure can be easily understood by the present specification by specific embodiments, and those skilled in the art can easily understand other advantages and efficacy of the present disclosure. Obviously, the described embodiments are merely the embodiments of the present disclosure, not all of the embodiments. The present disclosure can also be implemented or applied by different embodiments. The details in this specification may also be based on different perspectives and applications, and various modifications or changes are made without departing from the spirit of the present disclosure. It should be noted that the features in the following examples and embodiments may be combined with each other in the case of unlilled. Based on the embodiments of the present disclosure, those of ordinary skill in the art will bel...
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The invention discloses a stability control device bypass-to-circuit switching method based on switch displacement. The method comprises the steps that a stability control device accesses a circuit switch and a bypass switch to interval three-phase current, voltage and switch closing signals; a bypass process from a line switch operation state to a line and bypass switch parallel operation state and then to a bypass switch operation state is carried out by utilizing the closing change of the line switch and the bypass switch, and a bypass recovery process from the bypass switch operation state to the line and bypass switch parallel operation state and then to the line switch operation state is carried out. According to the method, the problem that the state cannot be switched due to the fact that the current of the line switch and the bypass switch is smaller than a non-current constant value when the line is in light load is solved, the stability control device can correctly identify the operation state of primary equipment, and correct current, voltage and closing signals are adopted to carry out line switching, tripping and overload logic judgment; and the maloperation and refusal operation of the stability control device in the side substitution switching process can be effectively prevented.
Description
Technical field [0001] The present invention relates to the field of power systems, and more particularly to a paragraph switching method for a steady control device based on a switching displacement. Background technique [0002] In order to prevent the line switching maintenance, the entire line is powered out, and the 220kV main wiring of some factory stations sets the bypass switch. If these plant stable control devices are connected to the line switch information, the bypass switch information is also connected. When the bypass switch is a line switch, the line switch is switched to the line and the bypass switch. Switch to the three states of the bypass switching process, which is the same, the bypass recovery process is run from the bypass switch to the line and bypass switch, and then switch to the reverse process of the line switch operation. The current stable control device is logical, and when the line or bypass switch is running to the line and the bypass switch, it ...
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IPC IPC(8): H02J3/00H02J13/00
CPCH02J3/007H02J13/00002H02J13/00036
Inventor 王刚孔祥云汪昌元
Owner GUANGXI POWER GRID CORP