1. SUBSTATION EQUIPMENT AND THEIR FUNCTIONS Substations INTRODUCTION: In Power System network‚ in order to transmit and distribute the generated power‚ it is necessary to install “SUBSTATIONS” at strategic points to work at required voltage level since “HIGH VOLTAGE TRANSMISSION” is resorted to. The Sub stations are classified as “GRID” of “RADIAL” Substations. The Grid station is installed in Grid network to reduce the voltage level from 230KV to 110 KV. The radial Station within Distribution net
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Protection Relays Example System Underfrequency and Rate of Change of Frequency Relays Undervoltage and Reverse Power Relay Lightning Protection Lightning Overvoltages Lightning Protection Devices Protection Paradigms - System Protection Summary Protection Paradigms - System Protection Power System Protection S.A.Soman Power System Dynamics Overview 1 Power System Dynamics Overview System Protection Relays Example System Underfrequency and Rate of Change of Frequency Relays Undervoltage
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ELECTRICAL CONTROL PANELS UL Listed Electrical Control Panels LISTED 800-421-1266 ELECTRICAL CONTROL PANELS ELECTRICAL INSTALLATION INSTRUCTIONS AIR CURTAIN OPENING TYPICAL INSTALLATION 1. Connect supply voltage from power panel to control panel. 2. Connect wires from motor leads in junction box(s) to terminals in panel per print. 3. Connect wires from micro switch to terminals in panel per print. 4. Check rotation of motors and switch leads if necessary. (3 phase only)
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Fundamental Principles of Power System Protection Course Synopsis Slide 1 Fundamental Principles of Power System Protection Slide 2 Disclaimer The material in this presentation is for Educational purposes only. Practical application of any of the material contained within must be applied in accordance with legislative requirements and having due regard to the individual circumstances. © Barrie Moor May 2009 Page 1 Fundamental Principles of Power System Protection
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stuff required to do this project? Hardware : 1. Arduino / Arduino Clone or make your own custom arduino board with this tutorial. 2. A 5v TTL -UART bluetooth module like : JY-MCU BT_BOARD (Cheaper) or Bluesmirf Gold/Silver. 3. Five 5V SPDT relays like : 5V relay. 4. Prototype board or breadboard. 5. Connecting wires. Software : 1. Arduino IDE : Arduino . 2. Eclipse for android programming (optional‚ not required). For instructions on installing and setting up the environment : How to install android
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the EPROM and control the siren‚ telephone and cassette player via the respective relays. CONTENTS: Chapter Chapter: 1. Introduction. Chapter: 2. Circuit description. Chapter: 3. Working of the circuit. Chapter: 4. Used Components. 4.1. Microcontroller (AT89C51) 4.2. NE555 IC. 4.3. MCT2E Optocouploer. 4.4. Regulator (7805‚ 7809). Chapter: 5. Other Important Used Components. 5.1. BC548 NPN Transistor. 5.2. Relay (12V‚ 200ohm). Chapter: 6. Applications Summery. Reference. Chapter: 1 1. Introduction:
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The equipment used for this project are two transformers‚ one for power supply and another for tap changing‚ LCD is used for displaying the value‚ dc motor is used as load‚ MC is used for controlling voltage‚ relays are used for two tapings‚ variable resister‚ potentiometer‚ crystal oscillator‚555timeretc. are used. 1555 TIMERS MOTOR MICROCONTROLLER (8051) ADC0808 VOLTAGE REGULATOR CAPACITOR BRIDGE RECTIFIER TRANSFORMER AC SUPPLY LCD DISPLAY LM35
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Case Study : Please study the details given below and answer the questions given at the end of the case Zwick Electrical “Did the consultants come up with anything?” asked Wilton Zwick. His brother‚ Carlton‚ nodded affirmatively. “There are several possible alternatives. In terms of alliances it looks like they have identified two potential partners. Here‚ take a look for yourself.” Wilton quickly scanned the report’s front page. “Hmm‚ Asea Brown Boveri and Siemens?” Carlton and Wilton Zwick
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repeat the process. Examples continued: Inputs Low level sensor High level Sensor Output Motor Address 0000 0001 Address 0500 Internal Utility Relay 1000 Examples continued: The Ladder Diagram Examples continued: Scan 1 Initially the tank is empty. Therefore‚ input 0000 is TRUE and input 0001 is also TRUE Scan 2 The internal relay is turned on as the water level rises. Scan 3 After scan 2 the oil level rises above the low level sensor and it becomes open. (i.e. FALSE) Examples
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Reorganizing ABB From Matrix to Customer-centric Organization Structure ©BMAN72631 Cohort 1 Group 3 Xu Anyue; Zhao Shuyi; Zhou Tianxiang; Li Mengdie; Qu Yang Contents Background Introduction Discussion Questions 1. What were the stages of transformation of ABB’s organisational structure? 2.What triggered the changes and to what extent were these organisational structures appropriate for the purpose? 3.How did these changes affect the autonomy of subsidiaries? 4.In what ways did the changes affect
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