Step voltage alarm system

A technology of step voltage and alarm system, applied in the field of electric power, to achieve the effect of easy aggregation, improved response speed and high directionality
CN104407205AInactive Publication Date: 2015-03-11SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI MUNICIPAL ELECTRIC POWER CO
Publication Date
2015-03-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a step voltage alarm system. The alarm system comprises a ground voltage monitoring system, wherein the ground voltage monitoring system comprises electrodes which are arranged on the ground in an inserting manner, a voltage comparing system is arranged between every two adjacent electrodes, the voltage comparing systems are connected with a micro processor system, the micro processor system is connected with a wireless communication module, and the ground voltage monitoring system is connected with a monitoring host through the wireless communication module. By arranging the electrodes on the ground in the inserting manner, the step voltage condition can be obtained through the voltage comparing systems among the electrodes, and whether the step voltage obtained by the voltage comparing systems is greater than the specified value or not can be judged through the micro processor system. When the step voltage is greater than the specified value, the remote wireless alarm is realized by the wireless communication module connected with the monitoring host in a wireless communication manner.
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Description

technical field

[0001] The invention belongs to the technical field of electric power, and in particular relates to a step voltage alarm system. Background technique

[0002] Step voltage is the voltage generated between the limbs of people or animals passing near the grounding point after the electrical equipment is grounded. This voltage can cause electric shock accidents. Step voltage often appears near the fault grounding point of electrical equipment and where the power transmission and distribution line breaks and lands. In addition, there is also a step voltage near the ground electrode of the lightning rod during a lightning strike. Usually, there is a danger of step voltage electric shock within 20 meters of these fault points.

[0003] In the vicinity of high-voltage line towers, sometimes there will be step voltage on the ground due to problems such as leakage or induction. The incident of electric shock due to step voltage occurs from time to time. There is ...

Claims

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