Reactive Power Compensation High-voltage Device

Suitable for 6kV~10kV substations, 1-4 sets of capacitors can be configured on the I and II busbars to adapt to various operating modes of the substation.
Basic technical parameters and working environment:
Normal operating temperature:- 15~+50oC, relative humidity<85%, altitude: 2000 m
Technical specifications: Rated voltage: 6 kV~10 kV
AC voltage sampling: 100 V (PT secondary line voltage)
AC current sampling: 0~5 A (if PT takes the secondary A and C line voltage on the 10 kV side, CT should take the B-phase current)
Voltage setting value: adjustable from 6~6.6 kV to 10~11 kV
Current transformer ratio: adjustable from 200~5000/5A
Action interval time: Adjustable from 1 to 60 minutes
Action requires system stability time: adjustable from 2 to 10 minutes
Power factor setting: adjustable from 0.8 to 0.99
Technical features: Voltage priority: Automatically switch capacitors according to voltage quality requirements, ensuring that the bus voltage remains within the specified range.
Automatic compensation: The capacitor bank is automatically switched based on the magnitude of reactive power, so that the system does not overvoltage, does not compensate, and the reactive power loss is always minimized.
Record monitoring: It can automatically or at any time retrieve monitoring data, operation records, voltage qualification rate statistical tables, etc. (optional).
Intelligent control: Before automatically issuing control commands for each action, it first inquires about all possible out of limit values that may occur after the action, reducing the number of actions.
Abnormal alarm locking: When the capacitor control circuit relay protection action, refusal action, and controller power loss occur, an audible and visual alarm is issued, displaying the fault location and locking outlet.
Safety protection: The automatic switching state of any capacitor group can be manually exited, and the controller will automatically lock and exit the control.
Fuzzy control: How to implement the comprehensive control principle when the system is at the high end of the voltage qualified range and in a specific environment is the difficulty in the design of this series of products. Due to various factors on site, such as configuration environment, power supply status, action time, and user restrictions on the number of actions, frequent actions are the most concerning for users. The application of fuzzy control takes into account many factors mentioned above to reasonably solve this "blind spot".