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System and method for detecting voltage drop for superconducting energy storage system

A technology of superconducting energy storage and voltage sag, applied in the direction of using digital measurement technology for measurement, etc., can solve the problems of unknown causes and serious harm to sensitive equipment, and achieve the effect of wide operating frequency range, elimination of interference, and small time lag

Inactive Publication Date: 2014-01-01
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
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  • Application Information

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Problems solved by technology

[0002] In small and medium-sized power systems, there is an unavoidable power system stability problem: instantaneous voltage drop, which is not only harmful to the sensitive equipment in the system, but also has unknown causes. We have to passively compensate and Eliminate this voltage drop

Method used

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  • System and method for detecting voltage drop for superconducting energy storage system
  • System and method for detecting voltage drop for superconducting energy storage system
  • System and method for detecting voltage drop for superconducting energy storage system

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Embodiment

[0035] Embodiment: a kind of voltage drop detection system based on superconducting energy storage system (see figure 1 ), including an external power grid containing a transformer, characterized in that it includes a voltage sensor, an amplification filter circuit, a central processing unit, a superconducting energy storage system control unit, and a CAN bus communication unit; wherein, the input terminal of the voltage sensor collects power grid voltage, the output end of which is connected to the input end of the amplification filter circuit; the input end of the central processing unit is connected to the output end of the amplification filter circuit, and its output end is bidirectionally connected to the superconducting energy storage system control unit via the CAN bus communication unit.

[0036] The voltage sensor (see figure 2 ) The rated input current and output current are both 2mA, the nonlinearity is less than 0.1%, the linear range is 0-10mA, the isolation wit...

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Abstract

A system for detecting voltage drop based on a superconducting energy storage system is characterized by comprising a voltage sensor, an amplification filter circuit, a CPU, a superconducting energy storage system control unit and a CAN bus communication unit. The working method includes the steps of signal acquisition, signal conversion, signal filtering and signal transmission. The system and method for detecting the voltage drop for the superconducting energy storage system have the advantages that the device is simple and practical, measuring accuracy is high, resolution ratio is smaller than 1V, real-time performance is good, the reliability of the system is high, and practical value is high.

Description

(1) Technical field: [0001] The invention belongs to the technical field of electric power system voltage detection, in particular to a voltage drop detection system and method based on a superconducting energy storage system. (2) Background technology: [0002] In small and medium-sized power systems, there is an unavoidable power system stability problem: instantaneous voltage drop, which is not only harmful to the sensitive equipment in the system, but also has unknown causes. We have to passively compensate and Eliminate this voltage drop. [0003] The superconducting energy storage system has a series of advantages such as fast response speed, high energy storage density, large instantaneous power release rate, high energy storage efficiency, long service life, installation without location restrictions, simple maintenance, and low pollution. Voltage dips have natural advantages. In recent years, breakthroughs have been made in some key technologies of superconducting...

Claims

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Application Information

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IPC IPC(8): G01R19/25
Inventor 周雪松石雪琦马幼捷吴艳娟李季李超靳盘龙宋爽季春
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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