保定电气厂

目前我国正在大力推进建设节约型社会，坚持建设与节约并重、提高资源利用效率也是电力产业政策的重要内容。随着我国经济的快速发展，基础建设迅速扩张，配电变压器作为输配电系统的重要设备，其需求量呈较大、较快的增长趋势。我国农村电网负荷呈较强的季节性，配电变压器轻载或空载运行时间较长，其空载损耗成为电能损耗的主要部分。配电变压器使用量大、应用范围广、运行时间长，因此具有很大的节能潜力。

At present, China is making great efforts to promote the construction of a conservation minded society, insisting on equal attention to both construction and conservation, and improving the efficiency of resource utilization are also important contents of the policy of the power industry. With the rapid development of China's economy, the infrastructure is expanding rapidly. As an important equipment of the power transmission and distribution system, the demand for distribution transformers is larger and faster. The load of rural power grid in our country is more seasonal, and the no-load time of the distribution transformer is longer, and the no-load loss becomes the main part of the power loss. The distribution transformer has large energy consumption, wide application range and long operation time, so it has great potential for energy saving.

避免长期过电压运行。过电压会造成铁心过激磁和饱和现象，变压器铁心中产生过激磁会造成以下影响：1)空载损耗增加;2)变压器噪声水平增加;3)空载电流中高次谐波含量增加;4)涌流大于空载电流，引起较大的机械力;5)过激磁时杂散磁通离开主磁路将引起结构件中的附加损耗;6)铁心的温升增加;7)过激磁的同时还有过电压，绝缘结构应能承受住这一过电压。

Avoid long-term overvoltage operation. Over voltage will cause the core over excitation and saturation of transformer core in over excitation will cause the following effects: 1) the no-load loss increases; 2) the noise level of the transformer increases; 3) increase the no-load current higher harmonic content; 4) current is greater than the no-load current caused by mechanical force is large; 5) over excitation when stray leave the main magnetic flux will cause additional loss in structural part; 6) increased core temperature rise; 7) and over excitation overvoltage and insulation structure should be able to withstand the overvoltage.

因此应详细了解配电台区电网运行情况，根据历史数据及现行数据估测该台区过电压运行情况，在订购非晶合金配电变压器时提供给变压器厂家，特殊情况可进行特殊设计，以满足现场运行要求。

It should be a detailed understanding of the distribution of power grid operation, according to the historical data and the current estimate of the Taiwan area over voltage operation, in order to provide transformer manufacturers of amorphous alloy distribution transformer, special circumstances can be designed to meet the operation requirements.