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在總配電室低壓總開關處安裝逆功率保護模塊一套，可防止外網停電時發電機所發電力反送入市電電網造成事故。

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當外網停電時，低壓總開關通過逆功率模塊控制斷路器跳開，發電機變成孤網運行，保證風機、循環氨水泵等主要設備不斷電而正常運行；可避免焦爐因停風機而產生的煙火污染，如功率足夠大也可保證焦爐的正常生產。

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當外網再次供電時，可通過總開關處同期裝置再次并網繼續運行。

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發電機組可通過程控機軟件實時監控發電機組的各種溫度、壓力、電壓、電流等參數和自動調節煤氣、冷卻水等流量，保證發電機組的正常運行

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.結論

4. Conclusion

對于焦化企業來講，任何時間停電都將造成巨大的損失，一旦停電，焦爐上升管因壓力過高，焦爐荒煤氣逸出，均需打開放散管放散而造成焦爐爐頂濃煙滾滾，環保方面是不允許的；另外由于焦爐爐體內荒煤氣無法導出，壓力過高會造成內部串漏對爐體的損害也很大，循環氨水停止循環也會給煤氣冷卻和焦油導出造成極大困難；由此可見，采用雙回路不間斷供電對企業來講是至關重要的。

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.