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A large-capacity lightning arrester constructed of low-melting-point alloy and method thereof

A surge arrester and large-capacity technology, applied in the direction of non-adjustable metal resistors, manufacturing encapsulated/shell resistors, resistors, etc., can solve uneconomical problems, increase heat capacity, reduce resistance drop, and generate heat from leakage current The effect of shrinking

Active Publication Date: 2020-01-14
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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Problems solved by technology

And this method is obviously uneconomical and unsustainable

Method used

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Embodiment Construction

[0017] The invention provides a large-capacity surge arrester constructed of low-melting point alloys, including: zinc oxide valve plates, series-connected plates and alloy valve plates, zinc oxide valve plates and alloy valve plates to form a peripheral sheath to manufacture a complete arrester

[0018] The invention provides a method for constructing a large-capacity arrester using a low-melting point alloy, which includes the following steps:

[0019] Step 1: According to the working voltage and overvoltage level of the protected system of the arrester, design the type and number of zinc oxide valves in series, and design the number of valves in parallel according to the energy level of the overvoltage pulse of the system. The above is the conventional arrester design method, from which the reference system to be optimized can be obtained;

[0020] Step 2: According to the safety margin required by the arrester and the material to be saved, calculate the corresponding equiv...

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PUM

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Abstract

The invention discloses a large capacity lightning arrester made of a low melting point alloy. The lightning arrester comprises a zinc oxide valve plate, serially connected sheets, and an alloy valveplate. The zinc oxide valve plate and the alloy valve plate form an outer sleeve. A complete lightning arrester is manufactured. By using a simple and effective alloy valve plate, the thermal capacityof the lightning arrester is largely increased, the cost of the lightening arrester is reduced, the protecting performance of the lightening arrester is improved, and the system work stability is enhanced.

Description

technical field [0001] The invention relates to the technical field of electrical engineering, in particular to a large-capacity lightning arrester constructed of a low melting point alloy and a method thereof. Background technique [0002] Zinc oxide surge arresters are widely used in power systems and electrical equipment to protect various electrical components from overvoltage pulses. When there is an overvoltage pulse such as lightning, the arrester is short-circuited to the ground instantaneously, absorbing the energy of the overvoltage pulse, and reducing or eliminating its impact on subsequent equipment and systems. The energy absorbed by the arrester is all converted into heat, its own temperature rises, the resistance drops, and the leakage current and its heating rise. When the temperature of the arrester is high enough, self-heating is greater than heat dissipation, and the temperature will rise further until it is short-circuited to ground at high temperature, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C7/12H01C1/084H01C17/02
CPCH01C1/084H01C7/126H01C17/02
Inventor 刘磊罗兵厉天威唐力廖一帆张福增王婷婷郑重孙梦
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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