知晓3BHE026866R0101 UAD154A控制器在励磁系统中的使用
拾取定时器：这些定时器加载步骤1（4）拾取延迟设定值满足所需条件时的设置。计时器开始显示步骤1在左侧，步骤4在右侧结束。
•禁用定时器：这些定时器加载步骤1（4）禁用时间设定点满足所需条件时的设置。计时器开始显示步骤1在左侧，步骤4在右侧结束。
•系统稳定定时器：该定时器持续加载系统稳定时间设定点设置，只有在系统变得稳定。
低电压检测定时器：该定时器加载低电压检测延迟检测到低电压时的设定点设置，并将开始向下计数至0。
步骤通电所需的条件步骤1通电需要以下条件。相同条件适用于步骤2至4。
•三相电压大于低电压电平设置。
•系统kVAR等于或超过步骤1拾取中的设置设定点。
•编程系统稳定时间已过。
•编程步骤1拾取延迟已过。
•步骤1具有步骤优先级设定点或所有其他步骤中设置的最高优先级不满足上述所有条件。
A、 1.5 Modbus内存映射的添加以下两个部分被添加到Mod 506的Modbus内存映射中有关Modbus的其他信息，请参阅7.4:DNP 3.0通信本说明书提供了有关DECS-100数字系统操作和安装的信息
励磁控制系统。为此，提供以下信息：•一般信息和规范•控制和指标•功能描述•安装
•维护和故障排除：在启用手动模式之前，必须评估手动模式励磁水平
特色如果励磁电流水平不适合发电机，严重可能会损坏发电机。
不正确的PID编号将导致系统性能差或系统损坏。
当为编程目的使用操作电源时，请遵守第4节“安装和初步设置”中规定的预防措施。
在发电机不旋转的情况下对DECS-100进行编程时应拆除DECS-100端子F+和F-的连接。
在上传设置文件之前，从DECS-100移除操作电源，从端子F+和F-断开现场接线，并重新应用操作DECS-100的电源。
PICKUP TIMERS: These timers are loaded with the STEP 1(4) PICKUP DELAY setpoint
settings when the required conditions are met. The timers are displayed beginning
with STEP 1 on the left and ending with STEP 4 on the right.
• DISABLE TIMERS: These timers are loaded with the STEP 1(4) DISABLE TIME setpoint
settings when the required conditions are met. The timers are displayed beginning
with STEP 1 on the left and ending with STEP 4 on the right.
• SYSTEM STABILIZATION TIMER: This timer is continuously loaded with the SYSTEM
STABILIZATION TIME setpoint setting and will only start to count down to 0 when the
system becomes stable.
• LOW VOLTAGE DETECT TIMER: This timer is loaded with the LOW VOLTAGE DETECT DELAY
setpoint setting when low voltage is detected and will start to count down to 0.
Conditions Required to Energize a STEP
The following conditions are required to energize STEP 1. The same conditions apply to
STEPS 2 through 4.
• Three-phase voltage is greater than the LOW VOLTAGE LEVEL setting.
• The system kvars are equal to or have exceeded the setting in STEP 1 PICKUP
setpoint.
• The programmed SYSTEM STABILIZATION TIME has elapsed.
• The programmed STEP 1 PICKUP DELAY has elapsed.
• STEP 1 has the highest priority as set in the STEP PRIORITY setpoint or all other STEPS
do not meet all of the above conditions.
A.1.5 Additions to Modbus Memory Map
The following two sections are added to the Modbus Memory Map for Mod 506. For
additional information on Modbus, refer to 7.4: DNP 3.0 Communications
This instruction manual provides information about the operation and installation of the DECS-100 Digital
Excitation Control System. To accomplish this, the following information is provided:
• General Information and Specifications
• Controls and Indicators
• Functional Description
• Installation
• Maintenance and Troubleshooting The Manual mode excitation level must be evaluated prior to enabling this
feature. If the level of excitation current is inappropriate for the generator, severe
damage to the generator may occur.
Improper PID numbers will result in poor system performance or system damage.
When applying operating power for programming purposes, observe the
precautions called out in Section 4, Installation, Preliminary Setup.
When programming the DECS-100 without the generator spinning, the
connections to DECS-100 terminals F+ and F– should be removed.
Before uploading a settings file, remove operating power from the DECS-100,
disconnect the field wiring from terminals F+ and F–, and re-apply operating
power to the DECS-100.
