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Novel microgrid fault detection device and detection method thereof

A technology of fault detection and detection method, which is applied in the direction of measuring devices, measuring electricity, and measuring electric variables, etc., and can solve problems such as the stability of small inertial power supplies

Pending Publication Date: 2020-09-25
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, small inertial power sources in microgrids can cause stability problems if line faults are not cleared in time

Method used

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  • Novel microgrid fault detection device and detection method thereof
  • Novel microgrid fault detection device and detection method thereof
  • Novel microgrid fault detection device and detection method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0065] Embodiment, novel microgrid fault detection device, see figure 1 Shown includes a large grid 13, and three micro grids, the three micro grids are micro grids MG 2 , Microgrid MG 3 and Microgrid MG 1 , is characterized in that it also includes access switch 8, bus A, resistor R 1 , resistance R 2 , resistance R 3 , ground wire 14, circuit breaker CB 1 , circuit breaker CB 2 , circuit breaker CB 3 , the first current measuring element 1, the second current measuring element 2, the third current measuring element 3, the fourth current measuring element 4, the first current starting element 7, the second current starting element 5, the third current starting element 6, Communication device 9, central processing unit 10, memory 11 and alarm 12;

[0066] Resistance R 1 One end of the resistor is connected to the bus A, and the resistor R 1 The other end of the resistor R is connected 2 On one end of the resistor R 2 The other end of the resistor R is connected 3 ...

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PUM

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Abstract

The invention discloses a novel microgrid fault detection device and a detection method thereof, and belongs to the technical field of microgrid power system protection, and can eliminate line faultsof a microgrid in time, eliminate a small inertia power supply in the microgrid, and improve the operation stability of the microgrid. The device comprises a large power grid and three micro-grids, wherein the three micro-grids are respectively a micro-grid MG2, a micro-grid MG3 and a micro-grid MG1. The device also comprises an access switch, a bus A, a resistor R1, a resistor R2, a resistor R3,a ground wire, a circuit breaker CB1, a circuit breaker CB2, a circuit breaker CB3, a first current measuring element, a second current measuring element, a third current measuring element, a fourth current measuring element, a first current starting element, a second current starting element, a third current starting element, communication equipment, a central processor, a memory and an alarm.

Description

technical field [0001] The invention relates to the technical field of micro-grid power system protection, in particular to a novel micro-grid fault detection device and a detection method thereof. Background technique [0002] Microgrid refers to a small power generation and distribution system composed of distributed power sources, loads, protection devices, etc., which can not only operate in parallel with the main grid, but also operate in isolation. The microgrid is proposed to realize the flexible and efficient application of distributed power and solve the problem of distributed power grid connection. The development and extension of microgrids can fully promote the large-scale access of distributed power sources and renewable energy, and realize the highly reliable supply of various energy forms for loads. Smart grid transition microgrid is a powerful supplement to the large power grid and an important part of the smart grid field. It has broad application prospects...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R19/165
CPCG01R31/00G01R19/165
Inventor 王颖周艳芳潘明九兰洲
Owner CHINA JILIANG UNIV