MODULE DETAILS

Module 20: Develop Switching Programs for Transmission and Distribution Networks

 

Nominal duration: 4 weeks (48 hours total time commitment)

This time commitment includes the preparation reading, attendance at each webinar (1 hour plus 15-30 minutes for discussion), and the time necessary to complete the assignments and further study.

MODULE PURPOSE

An important function of a power distribution system is to provide continuous supply to the consumers, which includes connecting and disconnecting of transmission lines or other components to and from the system. Switching events may be planned or unplanned and planned switching is carried out using switching programs. This module will examine the preparation of transmission, sub transmission and distribution (MV and LV) switching programs, evaluate the impact of switching on the respective systems and methods for ensuring safety during switching operations. Procedures for unplanned switching will also be covered.

PRE-REQUISITE MODULE(S)

Module 19: Monitor and Control Electrical Network

ASSESSMENT STRATEGY

To evaluate the achievement of the learning outcomes; written assignments, group projects and practical exercises are set.

SUMMARY OF LEARNING OUTCOMES

1.    Discuss the need for switching programs in electrical networks

 

2.    List and explain the role of various equipment used in network switching 

 

3.    Examine the requirements for writing and checking switching programs for HV, LV and secondary circuits isolation

 

4.    Discuss the different types of work permits and unplanned switching 




Learning Outcome 1

Discuss the need for switching programs in electrical networks

Assessment Criteria

1.1

Explain the meaning of switching in a network context

1.2

Describe and comment on the situations in which switching is needed

1.3

List and discuss the steps involved in switching starting from a request to issue of approved switching program)

1.4

List and discuss the steps involved in switching for operational control/emergency handling


Learning Outcome 2

List and explain the role of various equipment used in network switching

Assessment Criteria

2.1

List and explain the equipment used in HV networks for switching

2.2

List and explain the equipment used in MV networks for switching

2.3

List and explain the equipment used in LV networks for switching and isolation

2.4

Discuss with examples the meaning of secondary isolation and its importance in safe working


Learning Outcome 3

Examine the requirements for writing and checking switching programs for HV, LV and secondary circuits isolation

Assessment Criteria

3.1

Explain the need and general structure of typical switching programs

3.2

Discuss the aspects to be observed while planning for switching, such as:

(a) safety

(b) conflicts between different requests overloading

(c) loss

(d) voltage variations

3.3

Identify the use of standard abbreviations in examples of switching programs

3.4

Discuss:

(a)   the need for switching diagrams, and;

(b)   the necessity for using the latest drawings for         this purpose

3.5

Explain:

(a)   the need for checking of switching programs,          and;

(b)   approval for execution  



Learning Outcome 4

Discuss the different types of work permits and unplanned switching 

Assessment Criteria

4.1

Explain the use of electrical access permits and the steps to ensure safety of workers

4.2

Discuss the application of vicinity work access for work near live equipment

4.3

Discuss the use of testing permits for testing of equipment

4.4

Discuss the use of operating agreements for work on third party equipment

4.5

Explain the need for unplanned switching for system emergency resolution


Delivery Mode

A combination of asynchronous and synchronous e-learning delivery comprising a judicious mix of interactive online web conferencing, simulation (virtual labs) software, remote online labs, online videos, PowerPoints, notes, reading and study materials (in pdf, html and word format) accessed through the Moodle Learning Management System (LMS).

Software/Hardware Used

Software

  • N/A

Hardware

  •  N/A