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Distributive region protection method, protection device and short circuit region protection system

A protection device and area protection technology, applied in emergency protection circuit devices, emergency protection devices with automatic disconnection, circuit devices, etc., can solve the problems of backward communication, low precision, and few functions, so as to eliminate bottlenecks and meet big data requirements. The effect of reliable anti-overstep tripping

Inactive Publication Date: 2016-03-16
XIAN XIRUI CONTROL TECH CO LTD
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Problems solved by technology

However, at present, most mine high-opening integrated protector products are relatively old, with low precision, few functions, and backward communication. This obviously cannot adapt to the current status of complex, special, and highly automated power supply in coal mines, and cannot reliably solve the problem of preventing over-level tripping.

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  • Distributive region protection method, protection device and short circuit region protection system
  • Distributive region protection method, protection device and short circuit region protection system
  • Distributive region protection method, protection device and short circuit region protection system

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] An embodiment of the present invention provides a distributed area protection method, such as figure 1 As shown, the method is as follows: when the short-circuit protection is turned on, the protection device always detects the current of the protected line in real time. Finally, drive the protection tripping outlet to act, act on the circuit breaker trip, and remove the fault; the protection device has been detecting the bus side voltage of the protected line in real time when the low voltage protection is turned on. When the bus side voltage is less than the low voltage protection setting ...

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Abstract

The invention discloses a distributive region protection method. According to the method, protection devices always detect the current of a protected circuit in real time under the short-circuit protection input condition; when the protected circuit generates a phase-to-phase fault, and the fault current is greater than the short-circuit protection current constant value, shirt-circuit protection time limit time delay is performed; a driving protection tripping outlet acts on a circuit breaker to realize the tripping operation; and the fault is eliminated. The invention also discloses an Ethernet communication high-interrupting integral protection device and a short-circuit region protection system. By using the method, the device and the system provided by the invention, a 10 / 100M Ethernet or optical Ethernet interface can be supported; the requirements of large data volume and high speed are completely met; and the bottleneck of a communication link is eliminated. The GOOSE communication of the IEC61850 standard is supported; the priority transmission of a region protection signal (GOOSE blocking signal) is ensured; a looped network is built; the problem of override tripping phenomenon troubling a mine enterprise is solved; and the reliable override tripping prevention function is realized.

Description

technical field [0001] The patent of the present invention relates to the technical field of mine power automation products, in particular to a distributed area protection method and its protection device, and a short-circuit area protection system. Background technique [0002] The high-opening comprehensive protector is an automatic equipment for mine power monitoring, protection and control, and plays a very important role in the safe power supply of coal mines. However, at present, most mine high-opening integrated protector products are relatively old, with low precision, few functions, and backward communication. This obviously cannot adapt to the current status of complex, special, and highly automated power supply in coal mines, and cannot reliably solve the problem of preventing over-level tripping. . Contents of the invention [0003] In view of this, the main purpose of the present invention is to provide a distributed area protection method and its protection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26H02H3/093
CPCH02H3/093H02H7/262Y02P80/10
Inventor 郑飞蒋志明李勇勃
Owner XIAN XIRUI CONTROL TECH CO LTD
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