3.1 after the coke oven gas internal combustion engine generator set forms the internal local power supply network, a set of synchronization device for grid connection shall be installed at the low-voltage main switch in the general distribution room, which can be used internally by the enterprise after the synchronization device and low-voltage grid connection of municipal power.

3.2在总配电室低压总开关处安装逆功率保护模块一套，可防止外网停电时发电机所发电力反送入市电电网造成事故。

3.2 install a set of reverse power protection module at the low-voltage main switch in the main distribution room to prevent accidents caused by the reverse transmission of power generated by the generator to the municipal power grid in case of external power failure.

3.3当外网停电时，低压总开关通过逆功率模块控制断路器跳开，发电机变成孤网运行，保证风机、循环氨水泵等主要设备不断电而正常运行；可避免焦炉因停风机而产生的烟火污染，如功率足够大也可保证焦炉的正常生产。

3.3 in case of power failure in the external network, the low-voltage main switch controls the circuit breaker to jump through the reverse power module, and the generator becomes an isolated network for operation, so as to ensure the continuous power supply and normal operation of main equipment such as fan and circulating ammonia pump; It can avoid the smoke and fire pollution caused by stopping the fan of the coke oven. If the power is large enough, it can also ensure the normal production of the coke oven.

3.4当外网再次供电时，可通过总开关处同期装置再次并网继续运行。

3.4 when the external network supplies power again, the synchronization device at the main switch can be connected to the grid again to continue operation.

3.5发电机组可通过程控机软件实时监控发电机组的各种温度、压力、电压、电流等参数和自动调节煤气、冷却水等流量，保证发电机组的正常运行

3.5 the generator set can monitor various temperature, pressure, voltage, current and other parameters of the generator set in real time through the process control software, and automatically adjust the flow of gas and cooling water to ensure the normal operation of the generator set

4.结论

4. Conclusion

对于焦化企业来讲，任何时间停电都将造成巨大的损失，一旦停电，焦炉上升管因压力过高，焦炉荒煤气逸出，均需打开放散管放散而造成焦炉炉顶浓烟滚滚，环保方面是不允许的；另外由于焦炉炉体内荒煤气无法导出，压力过高会造成内部串漏对炉体的损害也很大，循环氨水停止循环也会给煤气冷却和焦油导出造成极大困难；由此可见，采用双回路不间断供电对企业来讲是至关重要的。

For coking enterprises, power failure at any time will cause huge losses. In case of power failure, due to high pressure in the rising pipe of the coke oven and the escape of raw gas from the coke oven, it is necessary to open the loose pipe to disperse, resulting in heavy smoke on the top of the coke oven, which is not allowed in terms of environmental protection; In addition, because the raw gas in the coke oven cannot be exported, too high pressure will cause internal cascade leakage, which will also cause great damage to the oven body. Stopping the circulation of circulating ammonia will also cause great difficulties for gas cooling and tar export; Therefore, it is very important for enterprises to adopt double circuit uninterrupted power supply.