3.1.2 Three-phase internal pole synchronous generator 三相隐极同步发电机
Manufacturer: AvK
Type: DIG 156 L/6 10500 V 50 Hz
Design 设计
The generator is mainly composed of main motor as inner polar and an external excitation motor. The power supply of the voltage conditioner should be achieved according to the rated voltage. In addition, one auxiliary excitation motor is provided.
Stator 定子
The stator housing adopts the welded structure. The stator is hydraulically pressed and is made of low-loss stalloy and pressed by jack pad. This structure meets the structure rigidity requirement of diesel generating set. According to VDE0530/IEC34, insulation grade of the stator winding is F. The coil head and the switch connection adopt reliable connecting type for mechanical fixation to avoid the influence of dynamics load caused by electro repulsion.
Rotor 转子
The rotor is composed of rotor shaft and master pulse wheel. The salient pole type designed master pulse wheel is made of hydraulic compressed tablets or steel plate. The copper damper cage is installed as standard and is connected with the pole shoe and each element electron. The main rotor is composed of flat sheet copper to effectively protect the damage caused by the centrifugal force via related components. According to VDE 0530/IEC 34, insulation grade of the rotor winding is F. According to chapter 34 of VDE 0530/IEC 34, the rotor is balanced by half diving key.
Bearing shields 轴承护套
The axial boots is welded by cast iron and the generator is arranged at bottom of the bearing according to the design.
Storage 布置
Rolling bearing at the driven end is of the sliding design and the other end is of fixing design.
Specifications, norms 规范，标准
Design specifications: VDE 0530, IEC 34 (EN 60034), ISO 8528-3
Components/subassemblies/standard design 零部件标准设计
Dimension of the junction box is large in design so as to install the current transformer.
Cable entry fixing and cable outlet fixing device in the junction box.
Electronic control 电子控制
Basic module "DECS 100":
Constant voltage adjustment
Static reactive current
U/F function low speed protection
Function module
Power factor setting: power factor balancing
o Power factors of controlled generator, i.e. factors of all currents or generating currents of other generators (according to the connection of current transformer)
o On-line system suitable to non-linearity voltage drop
o The generator is protected via adjustable over-excitation limit and under-excitation limit
o The target value is set via the potentiometer or the current signal (4-20 mA)
Voltage balancing: automatic synchronization balancing
o Idle speed voltage of the generator is automatically adjusted to the output voltage before the synchronization
o No extra independent voltage balancer is required
Excitation system monitor and diode monitor: excitation system monitor -- rectifying relay: is supplied in bulk and installed on the control/ switch panel
o Record the over-excitation and under-excitation state
o Record the error of rotating diode via the irregularity of excitation rectified current
Static transformer: on-line operation or combined operation with other generators
Auxiliary heating: installed inside the generator
Temperature monitor:
o 6 PT 100 sensor is used in coil_
o 1 PT 100 sensor is used in each bearing
Electronic parameter and characteristic
Working voltage 90... 110 % rated voltage
Voltage regulation scope: ±10 % of rated voltage, continuous operation
Voltage accuracy, static state ± 0.5 ... 1 %
Sustained short circuit current: 3 times of rated current on occasion of 3-pole short circuit, 3 seconds
Overload capacity: 1 hour of 10% overload within 6 hours
Or 50% overload for 30 seconds according to IEC 34/VDE 0530
Overspeed: 1.2 times of two for 2 minutes according to VDE 0530
Generator special equipment/accessories 发电机特殊附属部件
Screwed cable connections Cable connection: terminal box cover plate with connections at customer's choice. The terminal point per client requirement.
3.1.2 Three-phase internal pole synchronous generator 三相隐极同步发电机
制造商Manufacturer: AvK
型号Type: DIG 156 L/6 10500 V 50 Hz
Design 设计
发电机主要由做为内极的主电机和一个外部的励磁电机组成。电压调节器的电力供应将根据额定电压实现。此外配备一个辅助励磁电机。
Stator 定子
定子外壳采用焊接结构。定子由液压压制而成，低损耗的硅钢片构成，并通过承压盘压制成一整体。这种结构达到了柴油发电机组所要求的结构刚性要求。定子绕组绝缘等级F，依照VDE0530/IEC34。线圈头及开关连接采用可靠的连接方式机械固定，保证免受电动斥力引起的动态负荷的影响。
Rotor 转子
转子由转子轴和主脉冲轮组成。凸极式设计的主脉冲轮由液压压制片或钢板组成。铜制阻尼笼做为标配安装，与极靴及各电极电子相连。主转子由扁平铜片构成，通过相关组件有效防护离心力产生的损害。转子绕组绝缘等级为F，依照VDE 0530/IEC 34。转子经半个滑键平衡，依照VDE 0530/IEC 34，34 章。
Bearing shields 轴承护套
轴承护套由铸铁焊接而成，根据设计发电机支脚安排在轴承下部。
Storage 布置
驱动端滚动轴承为滑动设计，另一端为固定设计。
Specifications, norms 规范，标准
设计规范： VDE 0530， IEC 34 (EN 60034)， ISO 8528-3
Components/subassemblies/standard design 零部件标准设计
接线盒尺寸较大设计，以安装电流互感器。
接线盒内电缆引入固定和电缆出口固定装置。
Electronic control 电子控制
基本模块 "DECS 100"：
恒压调整
静态无功电流
U/F 功能低速保护
功能模块
功率因数整定： 功率因数平衡
o 受控发电机的功率因数即全部电流或其它发电机发电电流的因数(根据电流互感器连接)
o 适用非线性电压降的并机系统
o 通过可调整的过励磁极限和不足励磁极限保护发电机
o 目标值通过电位器或电流信号(4-20 mA)设定
电压均衡：自动同步均衡
o 在同步前，自动调整发电机怠速电压至输出电压
o 无需额外的独立电压均衡设备
励磁系统监视及二极管监视：励磁系统监视 – 整流继电器; 散装提供，安装在控制/开关面板上
o 记录过励磁和不足励磁状态
o 通过励磁整流电流不规则性记录旋转二极管的错误
静态变压器： 并网运行或与其他发电机共同运行
辅助加热： 安装于发电机内部
温度监控：
o 6 PT 100 传感器用于线圈__
o 1 PT 100 传感器分别用于每个轴承
电子参数和特性
工作电压 90 ... 110 % 的额定电压
电压调节范围 额定电压的± 10 %， 连续运行
电压精确性， 静态 ± 0.5 ... 1 %
持续短路电流 3 极短路情况下，3 倍的额定电流，3 秒
过载能力 6 小时内，1 小时的10 % 过载
或 依据 IEC 34/VDE 0530, 30 秒的50 %过载
超速 依据VDE 0530， 2 分钟1.2 倍额定转速
Generator special equipment/accessories 发电机特殊附属部件
Screwed cable connections 电缆连接: Terminal box cover plate with connections at customer's
choice 按客户要求发电机出线端。 原件下载： 
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