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27 September 2021 | Story André Damons | Photo Supplied
Dr Jacques Maritz, a lecturer at the UFS Department of Engineering Sciences (EnSci), recently hosted and chaired a mini-symposium on the role of UFS Grid Related Research.

During 2020 the University of the Free State (UFS) Qwaqwa campus experienced a loss of electricity supply for 10% of the year which led to emergency generation costs reaching R1.2-million. 

This is one of the problems Dr Jacques Maritz, a lecturer at the UFS Department of Engineering Sciences (EnSci), and the UFS Grid Related Research group are looking to address with their research on green and sustainable digital transformation efforts of local campus power grids.

Dr Maritz recently hosted and chaired a mini-symposium on the role of UFS Grid Related Research during which research strategies, visions and missions were shared by different research groups. These groups included the UFS Grid Related Research Group (presented by Dr Maritz), the UFS Initiative for Digital Futures (presented by Mr Herkulaas Combrink and Prof Katinka de Wet, both interim directors) and the Block Chain Research Group (presented by Mr Riaan Bezuidenhout, a PhD student at the Department of Computer Science and Informatics).  

Dr More Manda, on behalf of merSETA strategy and research, presented its strategic priorities for the next couple of years, which included the observation to drive the development of Digital and Green Skills. Mr Nicolaas Esterhuysen, from UFS Department of University Estates, also presented a live demonstration of the current state of the UFS smart grid. Industry partners presented a synopsis of their efforts and products pertaining to the evolution of digital and green campus grids. 

The symposium highlighted the existing synergies and visions

The symposium boasted an international keynote by Dr Veselin Skendzic (locally supported by Mr Deon Joubert, SEL), a principal research engineer with Schweitzer Engineering Laboratories  Inc (SEL), on the detection of power grid faults using the phenomena of travelling waves.

“The symposium highlighted the existing synergies and visions shared between UFS research groups, our industry partners and funders. An innovative model of industry engagement via shared case studies and technical papers, with emphasis on local campus grids, was explored and discussed. 

“The UFS Initiative for Digital Futures placed emphasis on the value-add of multidisciplinary research teams when attempting to solve the most critical social problems, especially in the South African digital paradigm. One of the notable successes of this symposium was that it provided a platform for several research groups within the paradigms of science, engineering and social sciences to synchronise with industry and showcase their expertise towards the effort of creating green and sustainable campus grids,” says Dr Martiz.
Mr Nicolaas Esterhuysen, from UFS Department of University Estates, also presented a live demonstration
of the current state of the UFS smart grid. (Photo:Supplied)

According to him, the critical discussions observed during the symposium aim towards future efforts that include working more closely with industry partners and leveraging internal collaborations in order to advance the digitalisation, optimisation, reliability and research-readiness associated with campus grids. The latter is also part of the mandate of the UFS Grid Related Research Group to build local research instruments that will serve a wider community of scientist and engineers. 

Additional benefit

An additional benefit of a fully digitally twinned campus grid is the value-add of the corresponding data lake, an entity that will serve the establishment of new frontiers in digital R&D exchanges, governed by the appropriate digital ethics, says Dr Maritz.

He continues: “The UFS is in a unique position to compete in the Digital Futures paradigm, with emphasis on its ability to generate innovative digital backbones to serve multidisciplinary research interactions between internal research groups and industry, with unique contributions generated in the field of digital training. The UFS Grid Related Research Group has also been receiving valuable support, training, and guidance from the Emerging Scholars Accelerator Programme (ESAP), led by Dr Henriëtte Van Den Berg, including mentorship by Prof Pieter Meintjes, senior professor at the Department of Physics, UFS. 

“This symposium was part of the engagement efforts by the UFS Grid Related Research Group as the main driver of the merSETA funded UFS project for Digital and Data Engineering, which is closely affiliated with the initiative for Digital Futures.”

News Archive

Power interruptions: Information for internal communication
2008-01-31

As part of the UFS’s commitment to address load shedding, the management would like to communicate the following:

The UFS mainly deals with the power interruptions by way of (a) the possible installation of equipment (e.g. generators) and (b) operational arrangements to ensure the functioning of the UFS in spite of power interruptions.

During the past week progress was made on both fronts. The information that follows resulted from a meeting of a task team of Physical Resources led by Mr Nico Janse van Rensburg, which took place on Monday 28 January (this task team naturally focuses on physical solutions) and a discussion by Exco on Wednesday 30 January 2008. Exco discussed the recommendations of the mentioned task team in respect of physical aspects, as well as the operational arrangements proposed by faculties.

Physical solutions

A Main Campus

1. New emergency power installations already approved:

Last week Exco gave its approval for the design and installation of emergency power equipment in all the large lecture-hall complexes to proceed immediately.

In all these cases

  • load surveys have been completed and a start has been made with the ordering of equipment and the process of appointing contractors. (Exco approved the adjustment of normal tender procedures in an attempt to expedite completion.)
  • generators with 20-30% more capacity than required for the current load are being ordered.
  • provision is being made for the connection of lights and at least one wall plug to the emergency power.
  • the expected construction time is 16 weeks (except in the case of the Flippie Groenewoud Building where it is 6 weeks).

The above-mentioned concerns lecture halls/ venues in the following buildings: Examination Centre, Flippie Groenewoud Building, Stabilis, Genmin and the Agriculture Building.

As far as the Agriculture Building is concerned, a larger generator (larger than required for lecture venues only) is being ordered in view of simultaneously providing essential research equipment (refrigerators, ovens, glasshouses) with emergency power within 16 weeks.

2. Investigation into the optimal utilisation of present emergency power installations

All the emergency power systems are being investigated on the basis of a list compiled in 2006 to determine whether excess capacity is available and whether it is possible to connect additional essential equipment or lights to it.

The electrical engineer warns as follows:
“Staff members must under no circumstances overload present emergency power points.

A typical example of this is a laboratory with 10 power points of which 2 points are emergency power outlets. Normally a fridge and freezer would, for example, be plugged into the two emergency power points, but now, with long load-shedding interruptions, a considerably larger number of appliances are being plugged into the power point by means of multi-sockets and extension cords. In the end the effect of such connections will accumulate at the emergency generator, which will then create a greater danger of it being overloaded and tripping, in other words, no emergency power will then be available.”

3. Requests and needs addressed directly to Physical Resources or reported to Exco via the line managers.

All the physical needs and requests addressed directly to Physical Resources or submitted to Exco via the line managers are being listed, classified and considered technically in view of their being discussed by the task team on Monday 11 February.
The information will (a) lead to recommendations to Exco regarding possible additional urgent emergency power installations, and (b) be used in the comprehensive investigation into the UFS’s preparedness for and management of long power interruptions.

Requests that can easily be complied with immediately and that fit into the general strategy will indeed be dealt with as soon as possible.

4. Purchase of loose-standing equipment: light, small, loose-standing generators, UPSs as solutions to/ aids during power interruptions

Exco approved that

a) faculties and support services accept responsibility themselves for the funding and purchase of loose equipment such as, for example battery lights, should they regard these as essential.
b) UPSs (uninterruptible power supplies) that faculties and support services wish to purchase to combat the detrimental effect of unexpected power interruptions on computer equipment) can (as at present) be purchased from own funds via Computer Services.
c) UPSs (uninterruptible power supplies) that faculties and support services wish to purchase to combat the detrimental effect of unexpected power interruptions on other types of equipment can normally be purchased from own funds with the consent of the line manager concerned.
Note: Please just make sure of the appropriateness of the equipment for a specific situation: it is not a power supply that can bridge a two-hour power interruption.)
d) small, loose-standing generators can be purchased from own funds via Physical Resources and installed under their supervision.
e) laptop computers can , where necessary, be purchased from own budgets. The availability of second-hand laptop computers must be taken into account.

B Vista

No major problems have been reported to date. The situation is being monitored and will be managed according to need. The same guidelines that apply to the Main Campus will naturally also apply to the Vista Campus.

C Qwaqwa

The situation is receiving attentions and solutions have already been found for most problems.

D General

1. All-inclusive project
A comprehensive investigation into the UFS’s preparedness for and management of long power interruptions will be launched as soon as possible. Available capacity will be utilised first to alleviate the immediate need. The needs assessment to which all faculties and support services have already contributed is already an important building block of the larger project.

2. Building and construction projects currently in the planning and implementation phase
The need for emergency power for projects such as the new Computer Laboratory is being investigated proactively and will be addressed in a suitable manner.

3. Liaison with Centlec
Attempts at direct and continuous liaison are continuing in an attempt to accommodate the unique needs of the UFS.

4. HESA meeting and liaison with other universities
A representative of the UFS will attend a meeting of all higher education institutions on 11 February. The meeting is being arranged by HESA (Higher Education South Africa) to discuss the implications for the sector, the management of risks and the sector’s response to government.

5. Internal communication
It is the intention to communicate internally after every meeting of the task team, which will take place on Mondays. Strategic Communication will assist in this regard.


 

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