Generator set control
XES-01-400 generator automatic controller
- Product description: XES-01 generator automatic controller is a fully-automatic intelligent controller suitable for low-pressure hydroelectric generators of 1000kW and below. It integrates automatic control of generator start and stop, generator excitation control, turbine speed control, and accurate control. In the same period, the eight functions of closing, generator relay protection, digital display instrumentation, automatic economic power generation, and unit status monitoring are integrated. The controller provides RS485 communication interface to realize online data sharing and remote monitoring and centralized control of the generator set. A generator set only needs to be equipped with a controller to realize the unit's automatic control system.
XES-01 generator automatic controller is a fully-automatic intelligent controller for low-pressure hydroelectric generators of 1000kW and below. It integrates automatic control of generator start and stop, generator excitation control, turbine speed control, and quasi-synchronous closing. , Generator relay protection, digital display instrumentation, automatic economic power generation, unit status monitoring eight functions in one. The controller provides RS485 communication interface to realize online data sharing and remote monitoring and centralized control of the generator set. A generator set only needs to be equipped with a controller to realize the unit's automatic control system.
XES-01 generator intelligent controller for automatic power generation realizes one-button startup, one-button shutdown, fast quasi-synchronous automatic grid connection and automatic power generation. In addition, the controller also realizes automatic start and stop according to water level and economic power generation mode according to water level. It uses water resources efficiently and harmoniously, which improves the operating efficiency of the generator set, saves personnel costs and improves economic benefits.
The device uses ARM architecture, which improves the overall stability and reliability;
Highly integrated, one unit only needs one controller to realize unit automation system;
One-button startup, one-button shutdown, simultaneous synchronization to the grid, active and reactive power adjustments are automatically completed, reducing the requirements for personnel skills;
One-button emergency stop, when there is an abnormal situation that needs emergency stop, it can be realized by one button;
Fully automatic economic power generation according to water level, rational use of water resources, economic power generation, and economic benefits;
Provide RS485 communication interface to realize remote monitoring and centralized control;
Support unattended (less-attended) mode for low-pressure hydropower stations;
Provide four excitation modes with constant voltage difference, constant excitation current, constant reactive power, and constant power factor, which can be flexibly selected according to actual operating conditions;
Provides 12-channel temperature measurement and control, using three-wire temperature measurement and standard temperature comparison method, which greatly improves the accuracy of temperature measurement;
Excitation power component fault diagnosis function, can locate the excitation component damage of a certain phase;
Excitation single-phase synchronization mode, any phase TV disconnection will not lose the synchronization signal;
The digital display instrument displays the electrical quantity data without the need for an analog meter, which saves costs, simplifies wiring, and improves the operating stability of the unit.
Fully enclosed standard chassis and whole panel design;
High anti-interference, anti-vibration, wide temperature design, meet the technical requirements of local installation.
Third, the basic functions
Speed regulation function
With gate valve and gate valve function, automatically identify whether the gate valve is all open
The machine end only needs to have a residual magnetic voltage of more than 0.5V to achieve the frequency measurement function of the unit.
Acceleration control of the unit can be carried out during the startup process
During the synchronous grid connection, acceleration and deceleration can be adjusted according to the set pulse width, so that the frequency difference between the machine and the system can meet the same
Frequency requirements for grid connection
During grid-connected power generation, the size of active power output can be adjusted according to demand
Unit deceleration control can be performed during shutdown according to demand
When stopping to the set braking frequency, the brake is turned on. The braking time can be set according to the parameters of the unit.
Provides hard-connected interfaces with the microcomputer governor including: open the governor, close the governor, accelerate, decelerate, and emergency stop of the governor. Provides hard-connected interfaces with the manual electric operator including acceleration, deceleration, and rapid reduction Leaf opening.
2. Excitation function
Choice of full-wave full-control rectification, full-wave half-controlled rectification, half-wave rectification
Automatic excitation adjustment methods include: constant voltage difference, constant excitation current, and constant power factor. The constant voltage difference operation mode is automatically selected during startup and shutdown. When the TV or TA is disconnected, it automatically switches to the constant excitation current mode. Excitation mode switching without disturbance;
Adopt variable gain PID online adjustment rule to improve the adjustment quality;
Select the terminal voltage to track the network voltage, start at the rated voltage, and start at 80% of the rated voltage. After successful excitation, the terminal voltage can be automatically adjusted to the target value in a settable manner;
With under-excitation limiting function, when under-excitation occurs, the excitation current is automatically increased and the de-excitation operation is blocked;
With strong excitation function, when the excitation current exceeds 1.1 times the rated excitation current, the excitation current is automatically adjusted to 1.1 times the excitation current. When the excitation current suddenly exceeds 1.3 times the excitation current and exceeds the set strong excitation time, exit the strong excitation and adjust the excitation current. To the rated value, only one strong excitation can be performed during each grid connection operation
When using a microcomputer-based governor, during normal shutdown, slow demagnetization starts when the frequency is less than 45Hz; during emergency shutdown, fast turn off the trigger pulse for rapid demagnetization;
When using a flashlight manipulator, when the frequency is less than 45Hz during normal stop and emergency stop, slow deceleration starts;
Supports brushed and brushless excitation units
3. Quasi-synchronous function
Choice of automatic quasi-synchronization and manual quasi-synchronization
When automatic quasi-synchronization, automatically adjust the voltage and frequency according to the pressure difference and frequency difference to achieve automatic quasi-synchronization grid connection;
During manual quasi-synchronization, manually adjust the frequency and voltage of the machine end to meet the frequency difference and pressure difference requirements. After the adjustment is completed, the device performs quasi-synchronous grid connection through the synchronous closing request;
When automatic quasi-synchronous grid connection fails, you can start the quasi-synchronous grid connection function again through the synchronous closing request;
4. Other functions
Machine-side voltage and machine-side current measurement; machine-side active power, reactive power, and power factor measurement; machine-side frequency and system frequency measurement; system voltage measurement; excitation voltage, 0-100ma excitation current measurement; 4 ~ 20mA water level measurement;
Three-wire 8-channel temperature measurement using PT100;
16 digital inputs
16 switching outputs;
160 * 128 LCD display;
2 RS485 communication interfaces to achieve online data sharing and build a remote monitoring and centralized control system;
12 electrical quantities, including Uab (machine terminal voltage), Ucb (machine terminal voltage), Ux (system voltage), Ia (machine terminal current), Ib (machine terminal current), Ic (machine terminal current), P (active power), Q (reactive power), Cos (power factor), F (machine terminal frequency), Lu (excitation voltage), IL (excitation current).