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Protection and Control: High-Voltage Power Circuits

Learn how to keep high-voltage power circuits protected and operating optimally all the time in this free online course.

Publisher: Graham Van Brunt
Delivery of electrical energy to the end-user is a critical service and thus should be managed properly. By enrolling in this course, you will be taught power station set up, the configuration of switches, elements of system protection, relay schemes, breaker control and electrical faults. You will learn about electrical system structure, the different types of fuses as well as how transformers are configured, connected and cooled.
Protection and Control: High-Voltage Power Circuits
  • Durée

    5-6 Heures
  • Students

  • Accreditation






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Energy is crucial to the existence of societies as it is often a good indicator of progress over time. Energy generated via electricity has become a favourite over time because of its versatility. It is often said that electricity is a good servant but a bad master because of its destructive nature to lives and property when handled inappropriately and to stress the importance of prioritizing safety. This course will give you a good overview of how electrical systems are efficiently managed thereby, ensuring that value is delivered to the end-user safely. You will begin by exploring the elements of a substation, how they are segmented and configured for optimal operation. Supervisory control and data acquisition (SCADA) is essential to the modern-day operation of power substations, so you will learn how it works. You will be shown the open profile for air-insulated switchgear (AIS) and enclosed or gas-insulated switchgear (GIS) under high voltage switch configuration. You will also be taught the effect of cost, reliability, flexibility and maintainability on the optimum selection and setup of different bus types. System protection and control elements, which usually include breakers, switches, battery banks and relays will be explored. 

The purpose of protective relaying is to ensure that faulty power equipment is removed from service quickly to minimize equipment damage, limit the effects of disturbance and maintain the stability of systems. This course will take you through an extensive study of relaying in general. You will explore the purpose of protective relaying, protection requirements for systems, failure of protection schemes, fault characteristics and types of electrical faults. You will also study basic electrical system structure, devices in a power system, instrument transformers, potential transformers and polarity. Three-phase power distribution has become standard and knowing how it works will help you understand the advantages it has over single-phase power. You'll discover what causes the failure of high voltage transformers, as well as learn about transformer construction review, voltage classification and cooling. Surge protectors guard against voltage spikes in electrical equipment. While circuit breakers keep wires from catching fire due to an overload of amps (amount of electrical current). In this light, this course will examine surge protective equipment as well as types of breakers and their characteristics. Upon this, the schematics and general requirements of control circuits will be explored. This will include control closing, control tripping, trip-free, anti-pump and reliability in breaker control circuits. 

The next step up from protection by fuses and involving relays is the instantaneous and time overcurrent protection. You will learn what differentiates the two and where they are best applied in the power grid. The final stage of the delivery of electricity to the end-user is distribution. You will explore distribution networks and the schematics of low voltage feeder protection. Upon that you will learn about the causes of feeder faults and protection essentials for transmission lines such as graded overcurrent protection, differential protection and more. Furthermore, this course will examine the different aspects of impedance relaying, the mho type distance relay, impedance zone tripping and permissive overreach transfer trip (POTT). Finally, we will look at the working of some relays that are in use across different utilities. Do you often wonder how power systems work, how electrical energy is transmitted safely over long distances and why the same electricity can be so dangerous? Then you are at the right place as these and many other questions will be answered adequately in this well-taught course. With the basic knowledge of physics and electrical circuitry you will enjoy every minute you spend studying here. Empower yourself by enrolling in this course now.

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