- Protection, Automation & Control
- Protection & Control
- Digital Substation
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- Power Stability Control
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Transmission Line Protection
PCS-992 Power Stability Control System
Blackouts may seriously impact the daily life of modern society from economic sector to daily routine. Furthermore, power stability is particularly critical in important institutions, such as hospitals, underground mines, gas stations, sewage treatment plants, etc. NR Electric provides well-proven power stability control solutions to improve the power system’s stability and significantly reduce blackouts.
The Power Stability Control System (PSCS) provides a system-level solution for the whole power grid. Different from other System Protection Schemes (SPS), the PSCS is based on instability prediction instead of instability measurement. Before the installation, the tactic table is designed according to pre- determined and simulated stability studies and strategy analysis. After installation, PSCS acquires all the necessary real-time data from the substations or power plants and seeks the appropriate remedy actions in the tactic table to pull the power system back to a stable state BEFORE the system goes into an unstable state. In contrast, conventional SPSs only detect the system’s parameters and take actions AFTER the system enters an unstable state.
The Power Stability Control System (PSCS) is used to effectively prevent and reduce the possibility of system oscillations. Imbalance between loads and generations can result in system frequency and voltage changes and could potentially lead to system collapse. Power stability control can quickly restore the system’s balance by load shedding or generator shut down based on the preset control tactics. Therefore, bring voltage and frequency back to an acceptable value, so as to minimize the affected area and avoid cascading instability.
A Power Stability Control System (PSCS) is composed of several master stations, multiple sub-stations and execution stations. Communication between the master station and the sub-stations is implemented via optical fibers.