Job Sheet 1 Electrical Panel Familiarization

Transcription

1 Job Sheet 1 Electrical Panel Familiarization The Wind Turbine Training System: Electrical Pitch Hub hardware has an electrical enclosure that houses an electrical panel. As shown in Figure 1-1, this panel contains the electrical components and wiring to control the wind turbine hub and blades. Figure 1-1. Electrical Panel. Festo Didactic Inc

2 Components Wiring Tray Relays Wiring Tray Wiring Tray Wiring Tray GND Terminal Blocks Figure 1-2. Electrical Panel Diagram. The following components are mounted on the electrical panel: Media converter industrial interface that bidirectionally converts between electrical Ethernet 2 Festo Didactic Inc

3 Wiring trays (4) plastic retainers that keep the routed wires on the electrical panel neat and secure. power supply contactors and many sensors thoughout the system. momentarily provides AC power for the entire system during a power outage to permit the system to shut down gracefully. module that provides a serial interface to control the power of the industrial UPS. Contactor relays (3) system motor and UPS on or off. Relays (7) circuits on and off. Motor drive (motion controller) circuit protection for the motor drive and motor, especially during motor startups. AC fuse if blown out during a system overload. properly connect system components to the earth-grounded electrical chassis. voltage doubler circuit that increases input voltage to the motor drive motor on the training system in an emergency situation. Festo Didactic Inc

4 Main power switch used to enable power to the system motor after the E-stop switch is enabled. connection points that provide a convenient method to join and terminate the copper wires that interconnect all electrical system components. optical connection points that are provided for interfacing the electrical pitch hub training system to the nacelle trainer. The following components are sensors: Minimum pitch limit switch Maximum pitch limit switch Pitch position sensor consists of an encoder or resolver that is located inside the electric motor. The sensor sends signals to the motion controller to indicate motor speed and a rotary is serially transferred over a data communication network from the motion controller to the 4 Festo Didactic Inc

5 The following component is an actuator: Pitch servomotor a three-phase AC synchronous motor that rotates a hub blade via its an internal encoder or resolver to track its rotary speed and position. The encoder output is others, and the safety of property at risk. Wind turbine systems can involve devices in motion such as high winds and heights. Serious personal injuries can occur if some basic safety rules are not practiced regularly. recommendations that should be followed to ensure safe operation. Wearing appropriate environment. important for you to stay alert and be aware of any potential conditions that may cause physical injury, such as slipping, tripping, or electrical shock. The proper use of tools is also important environment. Cooling natural fashion, which prevents heat from building up inside the cabinet. Festo Didactic Inc

6 K1 Fault1 L1 Contactor T1 L2 1 T2 L3 13 T3 Main SW Start E-Stop 1 Fault2 13 L1 Contactor T1 L2 2 T2 L3 T3 Vin+ Remote Port L1 Breaker/Overload 3 L2 10A L3 13 K6 Fault6 AC Failure BAT Low SD Fuse 3A T1 T2 T3 K4 Fault4 K7 13 L1 Contactor T1 L2 3 T2 L3 T3 K5 Fault J3 Circuit Redresseur J4 P/N85913 J1 J2 Blade max. limit Blade min. limit K3 Fault3 U V W Contactor 1 Contactor 2 Contactor 3 Breaker AC Fail BAT Low Contactor 3 Fault 1 Fault 2 Fault 3 Fault 4 Fault 5 Fault 6 Electrical Panel Familiarization Schematic diagrams, simply called schematics, are drawings that represent electrical components and wiring. Schematics are often used to help troubleshoot and repair large electrical systems. The main schematic diagram of the hub electrical system is shown in Figure 16 DI/16DO L N Breaker 10A DO DI Relay Card SDU DI5 Profibus cable Drive-CliQ cable DO8 DO9 DI1 DO1 DI2 DO DI3 DI0 Servo Motor P/N Profibus Profinet DO10 Ground earth Blade Min. limit CU310-DI10 Blade Max. limit CU310-D8 Scalance X101-1POF F1 F2 L1+ M1 M2 L2+ DO 6" HMI 1 2 The electrical system components and wiring are represented by symbols and lines PROFIBUS PROFINET Ground Earth The previous diagrams of the hub electrical system are used to check the operation of the electrical pitch hub training system. 6 Festo Didactic Inc

7 You are wearing safety glasses. You are wearing safety shoes. You are not wearing anything that might get caught such as a tie, jewelry, or loose clothes. The working area is clean and free of oil. Your sleeves are rolled up. Begin Festo Didactic Inc

8 UPS relay card AC fuse AC circuit breaker Ground bus bar Emergency Stop push-button switch Start push-button Review Questions 1. How many terminal blocks are used to make all of the necessary wire connections? 2. a. To protect the three overload relays b. c. To prevent interference from the motor d. To de-bounce the contacts on the power switch a. b. c. Pitch servomotor d. All of the above are correct. 8 Festo Didactic Inc

9 How many over-current protectors are located on the electrical panel? How many DC power supplies are used in the electrical system? Are all of the AC inputs to the DC power supplies protected by an over-current device? Name: Date: Instructor approval: Festo Didactic Inc