Measuring device for action delay of dry contact of electronic equipment

A technology of electronic equipment and measuring devices, which is applied in the direction of circuit breaker testing, etc., can solve the problems of lack of time-delay measurement and the inability of equipment purchasers to carry out factory inspection and acceptance with a unified method, so as to avoid power system accidents, wide application fields and Foreground, the effect of high measurement accuracy

CN104142471AActive Publication Date: 2014-11-12STATE GRID CORP OF CHINA +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-11-12

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Abstract

The invention relates to a measuring device for action delay of a dry contact of electronic equipment. The measuring device comprises detection cables, a signal detection circuit, a parallel interface, a computer and a switch, wherein the detection cables are arranged at the two ends of the dry contact of the electronic equipment to be measured, the detection cables are connected with the signal detection circuit, the output end of the signal detection circuit is connected with the computer through the parallel interface, and the switch is used for being connected with the computer and the electric equipment to be measured through different interfaces. The measuring device completely accords with information streams generated when the electronic equipment used in the power industry runs actually, can guarantee that the action delay of the dry contact of the electronic equipment putting into running meets technical condition requirements, avoids power system accidents caused due to the fact that the action delay of the dry contact exceeds the standard, and reduces life and property losses. Furthermore, the measuring device is high in measurement accuracy and simple and convenient to operate, can be used in a universal method for measuring the action delay of the dry contact of the electronic equipment used in the power industry, and has extremely wide application fields and prospects.
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Description

technical field

[0001] The invention relates to an electronic device dry contact action delay measurement device, which belongs to the technical field of electronic equipment used in the electric power industry. Background technique

[0002] At present, many electronic devices used in the power industry are controlled and operated through the opening and closing of dry contacts, and they all receive network messages of the 61850 protocol to drive dry contact actions. A key indicator of electronic equipment used in the power industry is the delay and time dispersion of dry contact action. The dry contact action delay refers to the time difference between the moment when the electronic device receives the instruction and the time when the dry contact operates. The time dispersion refers to the difference in the results of multiple measurements of the dry contact action delay, reflecting the stability of the dry contact action delay. Therefore, when the electronic equipment is...

Examples

Embodiment Construction

[0014] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0015] An embodiment of an electrical and electronic device dry contact action delay measuring device of the present invention is as follows:

[0016] Such as figure 1 As shown, the measurement device includes a detection cable, a signal detection circuit, a parallel interface, a computer and a switch for setting at both ends of the dry contact of the electronic equipment under test. The detection cable is connected to the signal detection circuit, and the output terminal of the signal detection circuit is It is connected to the computer, and the switch is used to connect the computer and the electronic device under test through its different interfaces. The computer and the electronic device under test are connected to the switch through optical fibers, and the electronic device under test is connected to one end of the dry contact action s...