POWERAPPS
CASE STUDY
:
Protection Co-ordination Study
CLIENT NAME
:
A Multinational company who is the project supplier
END CUSTOMER
:
Water Treatment Plant
PROJECT TITLE
:
Protection Co-ordination Study for a Water Treatment Plant
INTRODUCTION
The primary function of protective devices in a power system is to detect short circuits and isolate the fault by activating the appropriate circuit interrupting devices, which increases the reliability and safety of the electrical system. The relay co-ordination study is required to select the protective devices and necessary settings so that circuit interrupter closest to the fault opens before other devices.
SCOPE OF WORK
Perform protective device co-ordination analysis for HV panels including 2 Nos HV incomer panel, 2 Nos 16 MVA, 33 kV/6.9 kV power transformer, 1 No bus coupler, 8 Nos +1 spare distribution transformers ( including LV side breaker of the transformers ), 5 +1 spare motor feeders etc and provide results and recommendations as required by the specification and client.
NETWORK DETAILS
Network was represented from 33 kV to last relay location at LV side. The Single Line Diagram is shown in the following figure. Network Single Line Diagram
www.kalkitech.com
Copyright © Kalki Communication Technologies Ltd .All Rights Reserved
The incomer transformer panel is equipped with a SEPAM 80 Series relay for integrated transformer protections as follows,
•
46- Unbalanced load protection relay
•
50-Instantaneous Over Current Relay
•
50N-Instantaneous Earth Fault Relay
•
51- Time Delayed Over Current Relay
•
51N-Time Delayed Earth Fault Relay
•
64REF-Restricted Earth Fault Relay
•
87T Transformer Differential Protection Relay
The 6.6kV Motor feeders are equipped with a SEPAM 80 Series relay for integrated motor protections as follows
•
12- Over Speed Relay
•
14- Under Speed Relay
•
27- Under Voltage Relay
:
Protection Co-ordination Study
CLIENT NAME
:
A Multinational company who is the project supplier
END CUSTOMER
:
Water Treatment Plant
PROJECT TITLE
:
Protection Co-ordination Study for a Water Treatment Plant
INTRODUCTION
The primary function of protective devices in a power system is to detect short circuits and isolate the fault by activating the appropriate circuit interrupting devices, which increases the reliability and safety of the electrical system. The relay co-ordination study is required to select the protective devices and necessary settings so that circuit interrupter closest to the fault opens before other devices.
SCOPE OF WORK
Perform protective device co-ordination analysis for HV panels including 2 Nos HV incomer panel, 2 Nos 16 MVA, 33 kV/6.9 kV power transformer, 1 No bus coupler, 8 Nos +1 spare distribution transformers ( including LV side breaker of the transformers ), 5 +1 spare motor feeders etc and provide results and recommendations as required by the specification and client.
NETWORK DETAILS
Network was represented from 33 kV to last relay location at LV side. The Single Line Diagram is shown in the following figure. Network Single Line Diagram
www.kalkitech.com
Copyright © Kalki Communication Technologies Ltd .All Rights Reserved
The incomer transformer panel is equipped with a SEPAM 80 Series relay for integrated transformer protections as follows,
•
46- Unbalanced load protection relay
•
50-Instantaneous Over Current Relay
•
50N-Instantaneous Earth Fault Relay
•
51- Time Delayed Over Current Relay
•
51N-Time Delayed Earth Fault Relay
•
64REF-Restricted Earth Fault Relay
•
87T Transformer Differential Protection Relay
The 6.6kV Motor feeders are equipped with a SEPAM 80 Series relay for integrated motor protections as follows
•
12- Over Speed Relay
•
14- Under Speed Relay
•
27- Under Voltage Relay
References: 1. www.kalkitech.com/offerings/solutions-powerapps 2. http://www.powerapps.org/PAES_PSSystemStudies.aspx www.kalkitech.com Copyright © Kalki Communication Technologies Ltd .All Rights Reserved