并聯電容器出現故障了怎么辦？根據小編多年的經驗給大家總結了常見的并聯電容器的故障原因以及解決方法。

　　What to do if the shunt capacitor fails? Based on years of experience, this paper summarizes the common fault causes and solutions of shunt capacitor.

　　1、并聯電容器的故障判斷及原因分析

　　Fault diagnosis and cause analysis of shunt capacitor

　　（1）電容器外殼膨脹：由一坑電場作用，使得電容器內部的絕緣物游離，分解出氣體或者部分元件擊穿，電極對外守則放電，使得密封外殼的內部壓力增大，導致外殼膨脹變形。

　　Expansion of capacitor shell: under the action of a pit of electric field, the insulation inside the capacitor is free, and the gas or some components are broken down. The electrode is discharged externally, which increases the internal pressure of the sealed shell, resulting in the expansion and deformation of the shell.

　　（2）滲漏油：并聯電容器滲漏油是一種常見的現象，主要是由于產品質量不良，運行維護不當，以及長期運行缺乏維修導致外皮生銹腐蝕而造成的。

　　Oil leakage: oil leakage of shunt capacitor is a common phenomenon, which is mainly caused by poor product quality, improper operation and maintenance, and lack of maintenance during long-term operation.

　　（3）電容器溫升過高：主要原因是電容順過電流和通風條件差。例如，電容順室外調計不合理造成通風不良；電容器長時間過電壓運行造成電容器過電流；整流裝置產生的高次諧波使電容器過電流等。此外，電容器內部元件故障，介質老化、介質損耗、介質損失角正弦值增大都可能導致電容器溫升過高。電容器溫升高將影響電容器的壽命，也可能導致絕緣擊穿使電容順短路。

　　The temperature rise of capacitor is too high: the main reason is that the capacitor current and ventilation condition are poor. For example, the unreasonable internal and external adjustment of the capacitor results in poor ventilation; the long-term overvoltage operation of the capacitor causes the capacitor over-current; the high-order harmonic generated by the rectifier device makes the capacitor over-current. In addition, the internal component failure of capacitor, dielectric aging, dielectric loss, and the increase of dielectric loss angle sine value may lead to high temperature rise of capacitor. The increase of capacitor temperature will affect the life of capacitor, and may also lead to insulation breakdown and capacitor short circuit.

　　（4）電容器瓷瓶表面閃絡放電：其原因是瓷絕緣有缺陷，表面臟污。

　　Flashover discharge on the surface of capacitor porcelain bottle: the reason is that the porcelain insulation is defective and the surface is dirty.

　　（5）聲音異常：如果運行中，發現有放電聲或其它不正常聲音說膽電容器內部有故障。

　　Abnormal sound: if discharge sound or other abnormal sound is found during operation, it is said that there is a fault inside the capacitor.

　　（6）電容器爆破：哪里兇件發生極間或對外殼絕緣擊穿，與之并聯的其它電容器將對該電容器釋放很大的能量，從而導致電容器爆破并引起火災。

　　Capacitor explosion: where the insulation breakdown occurs between poles or to the shell, other capacitors connected in parallel will release great energy to the capacitor, which will lead to capacitor explosion and fire.

　　2、并聯電容器的故障解決方法

　　Solution to the fault of shunt capacitor

　　（1）電容器外殼滲、漏油不嚴重時，可在外殼滲、漏處除銹、焊接、涂漆。

　　When the leakage of capacitor shell is not serious, rust removal, welding and painting can be carried out at the leakage and leakage parts of the shell.

　　（2）電容光煥發器外守則膨脹則應更換。

　　If the external code of the electric radiant device expands, it should be replaced.

　　（3）如室溫過高，應改善通風條件；如因其它原因造成電容順溫升過高，則應查明原因進行處理；如系電容器本身的問題則就硬功夫換電容器。

　　If the room temperature is too high, the ventilation condition should be improved; if the temperature rise of the capacitor is too high due to other reasons, the cause should be found out for treatment; if it is the problem of the capacitor itself, it is necessary to replace the capacitor.

　　（4）電容器應定期檢查、清掃。

　　Capacitors should be inspected and cleaned regularly.

　　（5）若電容順有異常聲音應注意觀察。嚴重時，應立即停止其運行，并進行更換。

　　If there is abnormal sound in the capacitor sequence, pay attention to the observation. If it is serious, it should be stopped immediately and replaced.

　　（6）電容器發生爆破，應及時更換。

　　The capacitor should be replaced in time in case of explosion.