高压柴油发电机系统的接地方式有中性点不接地、中性点经电阻接地（按电阻值分为低电阻接地和高电阻接地）、中性点经消弧线圈接地（谐振接地）。

The grounding modes of high-voltage diesel generator system include neutral grounding without grounding, neutral grounding through resistance (low resistance grounding and high resistance grounding according to resistance value), neutral grounding through arc suppression coil (resonance grounding).

发电机在运行中，发生单相接地是最常见的故障，国际上广泛采用发电机中性点高阻接地方式，数据中心采用多台机组共用一套电阻器，与接触器柜配套使用，可以实现多个柴油机组的真空接触器进行互锁。

In the operation of generators, single-phase grounding is the most common fault. Generator neutral point grounding with high resistance is widely used in the world. Data center uses a set of resistors shared by multiple units, which can be used in conjunction with contactor cabinet to realize the interlocking of vacuum contactors of multiple diesel engine groups.

如果本柜进行互锁，可以加装PLC可编程控制器实现。保定新思达电气所生产的发电机接地电阻柜接触器柜可以起到限制接地电流、防止各种过电压的危害，取得了良好的运行经验。

If the cabinet is interlocked, it can be realized by adding PLC programmable controller. The contactor cabinet of generator grounding resistance cabinet produced by Baoding Xinsida Electric Company can limit grounding current and prevent all kinds of overvoltage hazards, and has gained good operation experience.