ABB SYN5201a-Z,V217 3BHB006714R0217 同步和并行切换过程可分为以下几个块

同步装置主要用于发电厂或工业

自备发电厂，在岛上运行时，发电机必须与干线并联，与公共网络中的干线或与配电系统并联。

只有当两个电压至少接近时，才能打开电源开关

同步（同相）。如果不满足此条件，可能会发生操作

接线故障、发电机过载，或在极端情况下造成损坏

发电机。

同步器® 5确保安全可靠地执行这些功能

手动控制并联开关的监控成员，或作为一个独立的、全自动的

同步单元。

同步和并行切换过程可分为以下几个块：

测量

电压（振幅）ΔU、滑差（频率差）“s”和相位差值

角度α是评估并联开关所必需的，由两个组成

测量信号U1和U2（见下图）。

匹配

电压和频率调节功能通过向电压调节器或涡轮机控制器传输控制脉冲来减少电压差ΔU和滑差“s”。

并行条件的监测

此功能将当前值与其设置的最大值进行比较，如果

同时满足所有条件，释放并行切换（CHK RELEASE）。

命令生成

命令生成块计算必要的超前角av

提前发送并行交换（ORDER），以消除由

开关的时间，并确保主触点在相位的精确时刻接通

比赛。如果角度α在仪器释放的同时达到α值

并行切换（CHK RELEASE），命令被发送去激活。在同步条件下（即。

在一段调整期内永久满足并联切换条件时的条件

监测时间“tsup”），也在不考虑前向角度的情况下发送命令。

Synchronization units are mainly used in power plants or industrial

self-generating power plants, where generators must be connected in parallel with mains in island operation, with mains in the public network or with distribution systems.

The power switch can only be switched on if both voltages are at least approximately

synchronous (in phase alignment). If this condition is not met, operation may occur

faults in the wiring, overloading the generator, or in extreme cases to damage

the generator.

SYNCHROTACT ®  5 ensures safe and reliable implementation of these functions either as

monitoring member of manually controlled parallel switching, or as an independent, fully automatic

Synchronization unit.

The synchronization and parallel switching process can be divided into the following blocks:

Measuring

Voltage (amplitude) ΔU, slip (frequency difference) "s" and phase difference values

angle α, which are necessary for the evaluation of parallel switching, are made of two

measured signals U1 and U2 (see figure below).

Matching

The voltage and frequency adjustment functions reduce the voltage difference ΔUand slip "s" by transmitting control pulses to the voltage regulator or turbine controller.

Monitoring of parallel conditions

This function compares the current values with their set maximum values and if

all conditions are met at the same time, releases parallel switching (CHK RELEASE).

Command generation

The command generation block calculates the necessary lead angle av, by which the command for

parallel switching (ORDER) sent earlier to eliminate delay caused by

the time of the switch and to ensure that the main contacts switch on at the exact moment of the phase

matches. If angle α reaches the value of α at the same time that the instrument releases

Parallel switching (CHK RELEASE), the command is sent deactivated. In synchronous conditions (i.e.

condition when conditions for parallel switching are permanently met for a period of adjustment

the monitoring time 'tsup') the command is also sent without taking into account the forward angle.