Description
机组自启停控制的要求是：
机组正常起动时，当发电机达到额定转速时，DCS将投入AVR。当发电机电压达到额定值时，DCS将投入同期装置。发电机与电网的同期是由同期装置自动实现，在同期过程中通过DCS控制AVR、DEH，当同期条件满足时，向发电机断路器发合闸指令。在同期合闸成功，发电机电负荷达到一定值之后，DCS将高压厂用电系统快速从启备变切换到高压厂变上。
机组正常停机时，DCS控制降低机组负荷，当机组负荷降到某一定值时，DCS将高压厂用电系统快速切换到启／备变系统供电；当机组负荷继续降到零，跳开主开关，联跳汽轮机(主汽门关闭)，发电机灭磁。
Nuera ORCA BTX-21 R2 VOIP Gateway 13 UPM3 T1 1248 Ports
45 Day Warranty – Free US Shipping!
Sonus CNA81 with two CPIM81 for GSX9000HD Softswitch
90 Day Hardware Warranty – Free Shipping!
Redundant NexTone SBC now GENBAND S3 Next one Nex Tone
90 Day Hardware Warranty – Free Shipping!
Juniper EX8200-48F 48-port 100FX/1000BASE-X SFP EX8200
90 Day Hardware Warranty – Free Shipping!
Juniper M10i-AC-B RE-850-1536 C-FEB Router M10iBASE-AC
90 Day Hardware Warranty – Free Shipping!
New Juniper Netscreen NS-5200 NS-5000-M2 NS-5000-8G2
90 Day Hardware Warranty – Free Shipping!
Extreme Black Diamond 10808 G60X 61010 60-port SFP Mod
90 Day Warranty – Free Shipping!
Cisco VCO 4K IPRC128 160 Port T1 Switch VCO/4K
90 Day Warranty – Need to move this out of inventory!
