Ngosa Katongo
Lusaka
Summary
Dynamic Chief Protection Engineer with extensive experience at ZESCO, excelling in protection coordination and innovative load-shedding schemes. Proven expertise in Powerfactory Digsilent and exceptional communication skills drive successful project outcomes. Lead a team of 55, enhancing network reliability and safety standards while implementing cutting-edge protection technologies.
Overview
22
22
years of professional experience
Work History
Chief Protection Engineer
Zambia Electricity Supply Cooperation Limited (ZESCO)
Lusaka
01.2022 - Current
- Review and approval of protection coordination on 33/11kV Substations, distribution lines using Powerfactory Digsilent.
- Team lead in design and implementation of 10 stage underfrequency protection loadshedding scheme to prevent total collapse of ZESCO network.
- Team lead in design and implementation of loadshedding scheme at Substations without N-1 iusing IEC 61850 Goose messaging.
- Team lead in design and implementation of loadshedding scheme using Siemens 7SJ602 relay to interstrip selected 11kV feeders to mitigate against the loss of one incomer.
- Team lead in design and implementation of automatic change over scheme using ABB REF630 IED to trip selected feeders, open the bus-section circuit breaker, start the Diesel generator, close circuit breaker for Generator to supply the International Airport when power failure occurs.
- Experienced in programming of ABB, Siemens, Schneider,GE and NR IEDS.
- Team lead in redesign and reprogramming of ABB REF615 protection relays to be used as Automatic Voltage Regulators for transformers.
- Team lead in redesign and reprogramming of ABB REU 615 voltage protection relay to be used for mechanical trips for a transformer.
- Experienced in IEC 61850 integration of protection IEDs into Substation automation systems.
- Certifying distribution transformers and switchgear during the Factory Acceptance Test (FAT) on behalf of ZESCO Limited
- Review and approval of protection schematic diagrams submitted by contractor before manufacturer.
- In charge of budget preparation and control for the department.
- Ensure that ZESCO SHEQ safety standards are adhered to.
- Advise on new protection technology to Cooperate Executive Team.
- Provide consultancy services to ZESCO sister departments and Government institutions.
- Review of ZESCO standard operating procedures.
- Team lead in preparation of technical schedules for tender evaluation bid documents.
- Responsible for coordination of a team of 55 technical personnel, covering the protection & control, Transformer Workshop and Substations for Lusaka, Southern, Western province 33kV and 11kV network with a maximum demand of 590MW, 878MVA installed transformer capacity and 6,997.11km of cable and OHL circuits.
- Lecture part time at Kafue Gorge Regional Training Centre (KGRTC) on protection coordination.
Principal Protection Engineer
Zambia Electricity Supply Cooperation Limited (ZESCO)
Lusaka
01.2017 - 01.2021
- Commissioning of 33/11kV transformers and switchgear (indoor and outdoor) in full conformance to IEC 60255.
- Commissioning of transformer protection schemes using IEC 60255.
- Commissioning of line protection schemes using IEC 60255.
- Carry out grading or coordination of protection relays on 33/11 kV distribution lines and substations using PowerFactory Digsilent software, following IEC 60909.
Senior Protection Engineer
Zambia Electricity Supply Cooperation Limited (ZESCO)
Lusaka
01.2012 - 01.2017
- Make sure the 52 weekly annual maintenance plan is adhere to.
- Make sure the weekly battery maintenance plan is adhered to
- Carry out protection and control wiring on switchgear and Transformers up to the Remote Terminal Unit (RTU) for substation automation systems.
- Responding to general faults on the distribution network.
Protection Engineer
Zambia Electricity Supply Cooperation Limited (ZESCO)
Lusaka
01.2007 - 01.2012
- Pressure testing, prelocation and pinpointing of both 33kV and 11kV underground cable faults.
- Route tracing of both 33kV and 11kV underground cables.
- Carry out battery charger and battery set maintenance.
- Carry out annual maintenance on 33/11kV Substations based on IEC 62271.
- Post fault investigation and defect resolution across the distribution network.
Graduate Protection Engineer
Zambia Electricity Supply Cooperation Limited (ZESCO)
Lusaka
01.2005 - 01.2007
- Graduate engineer induction training program in Generation, Transmission, Customer Services and Distribution Directorates. Successfully completed a two-year program with insights gained into the operations of the vertically integrated utility company, with exposure across both the technical and commercial value chain.
Quality Assurance Operative
Leicester Circuits Limited
04.2004 - 01.2005
- Inspecting printed circuit boards for faults & to verifying that’s pcb’s are manufactured according to customer specifications & to meet BS 9000/CECC 2300 standards.
- Recording all fault codes in the computer and daily log sheet.
- Preparing initial Sample Inspection Report (I.S.I.R) when requested by a customer.
Test Operative
Fujitsu Telecommunications Europe Limited
08.2003 - 04.2004
- Testing & diagnostics of printed circuit boards down to component level.
- Carry out tests on power supply units, central processing units & programming the units up with data of manufacturer, type of unit and serial number.
- Performing ATE (automatic test engineering) tests to pass or fail printed circuit boards.
- Programming software into ADSL line cards and broadband modems.
Education
B. Eng (Hons) - Electrical & Electronic Engineering
University of Leicester
England01.2003
Advanced General National Vocational Qualification - Engineering (GNVQ)
Charles Keene College
England01.1999
General Certificate in Secondary Education - GCSE
Munali Secondary School
Zambia01.1996
Skills
- Excellent communication skills
- Good interpersonal skills
- Excellent knowledge of Microsoft office
- Powerfactory Digsilent or equivalent
- Expert use of CPC100
- Expert use of CMC 356
- Expert use of CT analyzer
- Expert use of Cibano 500
- Electrical fault finding
Hobbies and Interests
- Traveling
- Playing football and basketball
- Hiking
- Gaming
References
- Mr. Cyprian Muchopa, Head - Commercial, Total Zambia, P.O BOX 31724, Lusaka, Zambia, Cyprian.muchopa@total.co.zm
- Mr. Suma Lungu, Snr Mgr Transmission Protection, Zesco Limited, P.O BOX 30040, Lusaka, Zambia, sumalungu@zesco.co.zm
Personal Information
Date of Birth: 11/09/78
Timeline
Chief Protection Engineer
Zambia Electricity Supply Cooperation Limited (ZESCO)
01.2022 - Current
Principal Protection Engineer
Zambia Electricity Supply Cooperation Limited (ZESCO)
01.2017 - 01.2021
Senior Protection Engineer
Zambia Electricity Supply Cooperation Limited (ZESCO)
01.2012 - 01.2017
Protection Engineer
Zambia Electricity Supply Cooperation Limited (ZESCO)
01.2007 - 01.2012
Graduate Protection Engineer
Zambia Electricity Supply Cooperation Limited (ZESCO)
01.2005 - 01.2007
Quality Assurance Operative
Leicester Circuits Limited
04.2004 - 01.2005
Test Operative
Fujitsu Telecommunications Europe Limited
08.2003 - 04.2004
B. Eng (Hons) - Electrical & Electronic Engineering
University of Leicester
Advanced General National Vocational Qualification - Engineering (GNVQ)
Charles Keene College
General Certificate in Secondary Education - GCSE
Munali Secondary School