Generating set output reducing and generating set tripping device used in case of overload of contact outgoing lines of power plant

A unit output and power plant technology, applied in the field of power plant liaison outlet overload reduction unit output cutting machine, electrical power supply or power distribution circuit device or system, can solve the problems of poor pertinence and high cost, and achieve cutting machine Flexible selection, simple structure and clear device principle

Inactive Publication Date: 2014-08-13
巨争号
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Before the present invention is proposed, there is currently no automatic device for cutting the output of the unit for overload reduction of the power plant. The similar and similar existing technology is a safety and stability device suitable for regional power grids and large-area interconnected power grids. Its application The scope is suitable for the transient stability control of wide-area plants and stations. The data collected by the device are the status signals of lines, transformers, and generators. The action consequence is to stop the line directly, which is not targeted and costs high

Method used

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  • Generating set output reducing and generating set tripping device used in case of overload of contact outgoing lines of power plant
  • Generating set output reducing and generating set tripping device used in case of overload of contact outgoing lines of power plant
  • Generating set output reducing and generating set tripping device used in case of overload of contact outgoing lines of power plant

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Embodiment Construction

[0010] figure 1 The logical schematic diagram is the logical schematic diagram of the double-circuit connection outgoing line overload reduction unit output cut-off machine in this device. The logic principle consists of connecting the I line overcurrent element I I过 , undercurrent element I I欠 , contact II line overcurrent element I II过 , undercurrent element I II欠 , AND gate logic element AND 1 ,and 2 , the time element T 1 , T 2 , T 3 , T 4 It is composed of contact I, contact II line overload active power reduction signal pressure plate, cutting machine signal pressure plate, #1 machine to minus #N machine active power outlet pressure plate, and #1 machine to #N machine exit pressure plate. I I过 with I II欠 Composing AND gate 1 logic, AND gate 1 and 1 Output all the way to time element T 1 , the other output is connected to the time element T 2 . I II过 with I I欠 Composition of AND gate 2 logic, AND gate 2 AND 2 Output all the way to time element T 3 , the...

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Abstract

The invention provides a generating set output reducing and generating set tripping device used in the case of overload of contact outgoing lines of a power plant. When the contact outgoing lines of the power plant do not conform to the N-1 criterion of power supply security, in the case that any of the contact outgoing line trips out, firstly, the output of the generating sets engaged in operation is reduced automatically within the time limit allowed by the overload of the contact outgoing lines and then whether to trip the generating sets engaged in operation is determined according to the value of the current delivered by the contact outgoing lines after the output of the generating sets engaged in operation is reduced. The generating set output reducing and generating set tripping device is based on a clear principle and is simple in structure and can flexibly choose to reduce the output of the generating sets or trip out the generating sets. The generating set output reducing and generating set tripping device can be independently used as a high-reliability power grid automatic device.

Description

technical field [0001] The technical field of the present invention belongs to circuit devices or systems for electrical power supply or distribution. The invention relates to an overload reduction unit output cut-off device for connecting outgoing lines of a power plant. A design made for overloading and burning out of the connecting outlet. Background technique [0002] Before the present invention is proposed, there is currently no automatic device for cutting the output of the unit for overload reduction of the power plant. The similar and similar existing technology is a safety and stability device suitable for regional power grids and large-area interconnected power grids. Its application The scope is suitable for the transient stability control of wide-area plants and stations. The device collects the status signals of lines, transformers, and generators. Its representative technologies include: RCS-992 distributed stability control device (similar technology), RCS-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
Inventor 巨争号
Owner 巨争号
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