Wuhan Olide XES-07 excitation controller
is a microprocessor-based control device. Through the collection and conversion of various types of electricity and software calculations, various state signals and control signals of the power unit are output, and the AC excitation power source is changed to a controllable DC output control to achieve the generator excitation control.
XES-07 excitation controller adopts sealed components and post-board installation design and is fixed in the excitation control cabinet. The front LCD LCD Chinese display is used to indicate the status of XES-07 and system operating conditions. The rear panel wiring uses European-style quick connection terminals. The RS485 and RS232 ports on the rear panel are used for XES-07 communication with the host computer and PC.
Second, the main performance parameters
◆ Machine terminal voltage measurement UF: 400V or rated value of voltage transformer secondary side 100V
◆ Stator current measurement IF: rated value 5A input or 1A input ◆ Rotor current measurement IL: Hall current sensor measurement 0 ～ 100mA
◆ Trigger pulse frequency: 10KHz
◆ Analog input channel: 16 channels ◆ Digital input: 12 channels ◆ Digital output: 8 channels ◆ Automatic / manual adjustment range: (10 ～ 130)% of rated value ◆ Start-up: Overshoot is less than 1% of rated value, Start-up time is less than 2.5 seconds, and the number of oscillations is less than 1. ◆ Adjustment rate: software reactive power adjustment ± 15%
◆ Voltage regulation accuracy: no more than ± 0.5%
◆ Thyristor phase shift range: 5 ～ 145 °
◆ Thyristor control angle resolution: 1/20000
◆ The excitation system can meet the manual and automatic quasi-synchronous grid-connected power generation of the unit ◆ Guaranteed to work for a long time under the condition of 110% excitation current
◆ When the terminal voltage drops to 80% of the rated value, it will provide more than twice the strong excitation current for a duration of not less than 20 seconds. ◆ Excitation system voltage response time: the rise time is less than 0.08 seconds and the fall time is less than 0.15 seconds. Less than 2 units / second ◆ Regulation accuracy of automatic excitation regulator is
less than 0.2%
◆ Excitation PT is equipped with disconnection detection, automatic switching and protection, and concurrent signals ◆ Fault signal alarm output ◆ Underexcitation limit function ◆ Strong excitation limit value function and strong excitation inverse time function ◆ With remote control and local control functions ◆ Automatic The adjustment accuracy of the excitation regulator is better than 0.1% of the rated voltage. ◆ RS485 or Ethernet can be used to communicate with the upper computer. ◆ The switching value can be used as the interface. ◆ The voltage response ratio is not less than 2 units / second.