鸡西干式变压器：单相配电鸡西干式变压器供电的优点及经济效益

单相配电鸡西干式变压器供电的优点及经济效益 　　
美国、比利时等国早在20世纪60年代就研制成功了全自保护配电鸡西干式变压器。这种配电鸡西干式变压器可对雷电、过载、温升过高和内部故障进行保护。具有运行安全可靠、不需辅助设备、结构紧凑等优点，目前已得到日益广泛的应用。
这种鸡西干式变压器靠安装在上方的避雷器对雷电进行保护；靠二次侧鸡西干式变压器对过载进行保护，当因负荷增加，绕组的温升达到极限值时，可自动切断电路；万一绕组内发生短路时，对内部故障的保护则是靠装在高压绕组两端的内熔丝完成。
美国西屋公司生产的全自保护鸡西干式变压器在结构上和ACEC的产品大同小异。它较小的故障电流是由保护连接装置保护的；较大的故障电流是由限流熔断丝保护；负荷侧的故障则是由二次侧鸡西干式变压器保护；对雷电的保护也是靠避雷器。其限流熔断丝和保护连接装置均置于高压套管内。
单相鸡西干式变压器在使用上有下列优点:
①采用单相鸡西干式变压器就近降压供电，提高供电质龟。
②一般单相鸡西干式变压器在小范团内供电。若发生故障时波及面较小，容易修复。对于全自保护型鸡西干式变压器.因其自身有较强的保护能力.万一发生故障.发现和排除故障时间短.供电的可靠性高。
③使用灵活.安装维护方便。在高压输电线上，可安装一台用于单相供电，亦可同时挂三台作三相供电.可灵活应用。
使用单相鸡西干式变压器的经济意义：
①相同容量的单相鸡西干式变压器与三相鸡西干式变压器相比，单相鸡西干式变压器的铁重轻20%，铜重少10%。尤其是采用卷铁心结构时.鸡西干式变压器的空载损耗可下降15%以上.空载电流可下降30%-50%，这将使单相鸡西干式变压器的制造成本和使用成本同时下降，从而获得佳的寿命周期成本。
②在电网中若采用一线一地制的单相供电系统，可节省导线33%-63%，按经济电流密度计算，可节约导线重量42%；按机械强度计算，可降低导线消耗66%。因此，可降低整个输电线路的建设投资，这对我国地域广阔的农村和城镇的路灯照明及居民生活用电方面是很有意义的。
③单相鸡西干式变压器由于容量小，结构简单。使用量多，尤其适合于大批量的现代化生产，有利于提高产品质量和效益。

The advantages of single-phase transformer

The United States, Belgium and other countries as early as the 1960s on the successful development of the whole self-protection of distribution transformers. This distribution transformers can lightning, overload, high temperature and internal fault protection. With safe and reliable operation without auxiliary equipment, compact structure, etc., has been increasingly widely used.
This transformer installed by the lightning arrester on the top of the protection; rely on the secondary side circuit breaker overload protection, as a resu电 话：0635-8888299lt of increased load, winding temperature reached limit, it can automatically cut off the circuit; in case of short circuit within the winding , the internal fault protection is installed in the high voltage winding through both ends of the fuse inside to complete.
Westinghouse produced full protection of the transformer from the ACEC in the structure and similar products. It is a small fault current protection to protect connected devices; large fault current limiting fuse is protected; the load side of the fault is from the secondary side circuit breaker protection; also rely on the protection of lightning arrester. The current-limiting fuse and to protect connected devices are placed in high-pressure casing.
In the use of single-phase transformer has the following advantages:
① single-phase transformer step-down power supply nearby, improve power quality turtle.
② the general range of single-phase transformers in a small group within the power supply. If the failure magnitude smaller, easier to repair. For all self-protected transformer. Because of its strong ability to protect itself. In case of failure. Discovery and troubleshooting time is short. Power and high reliability.
③ use and flexible. Installation and maintenance. In the high-voltage transmission lines, it can be used to install a single-phase power supply, can also be linked to three-phase power supply. Can be applied flexibly.
Single-phase transformer with economic implications:
① the same single-phase transformer capacity, compared with three-phase transformer, single-phase transformer 20% lighter weight iron, copper, 10% less weight. In particular the use of wound core structure. Transformer no-load loss can be reduced more than 15% No load current can be decreased by 30% -50%, which will allow single-phase transformer manufacturing costs and decreased use of cost at the same time, to get the best life cycle cost.
② If the grid system used to line a single-phase power supply system can sa地 址：山东聊城经济开发区华山路南首30号ve 33% -63% lead, according to the economic calculation of current density, the weight savings of 42% lead; calculated by the mechanical strength can reduce wire consumption of 66% . Therefore, we can reduce the transmission line construction investment, which is China's vast rural and urban residents of the street lighting and power consumption is of great significance.
③ single-phase transformer as the capacity of small, simple structure. Use more, especially suitable for modern mass production, will help improve product quality and efficiency.

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