PPA322B HIEE300016R2 HIEE400235R1 | ABB | Prime mover speed control system

Description

PPA322B HIEE300016R2 HIEE400235R1 | ABB | Prime mover speed control system

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Reasons for PPA322B  oscillation and loss of step
Based on operating experience, the causes of generator HIEE300016R2  and loss of step are
a) Static stability failure. This often occurs when the operating mode changes, causing the conveying power to exceed the maximum allowable power at that time.
）The impedance between the generator and the power grid suddenly increases. This situation often occurs when a short circuit occurs at a point in the power grid where the generator is connected, and some parallel components are cut off, such as one back circuit in a double circuit line being disconnected, or one parallel transformer being cut off.
The power of the power system suddenly becomes unbalanced. If a large capacity unit suddenly sheds load and a connecting line trips, causing serious power imbalance in the system.
d) Large unit demagnetization. Large unit HIEE300016R2  absorbs a large amount of reactive power from the system, resulting in insufficient reactive power and a significant decrease in system voltage, leading to system instability

e) The speed control system of the prime PPA322B  is malfunctioning. The malfunction of the prime mover speed control HIEE400235R1  causes a sudden change in the input torque of the prime mover, resulting in a sudden increase or decrease in power, causing the generator torque to lose balance and causing oscillation
f) When the generator is running, the potential is too low or the power factor is too high.
g) The asynchronous parallel connection between power sources failed to pull in synchronization.
The difference between oscillation caused by single machine out of step and systematic oscillation
a) The meter PPA322B  amplitude of the out of step unit is larger than that of other units;

Mailbox：sauldcsplc@gmail.com |PPA322B HIEE300016R2 HIEE400235R1
www.abbgedcs.com | Qiming Industrial Control | Simon +86 13822101417