Thermal behaviour analyses of gas‐insulated switchgear compartment using thermal network method

Stosur, Mariusz; Szewczyk, Marcin; Sowa, Kacper; Dawidowski, Pawel; Balcerek, P.

doi:10.1049/iet-gtd.2015.0489

Cited by 15 publications

(13 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The estimation of the temperature rise of the LBS contacts is performed by following the two steps outlined in the previous sections of this paper. The final temperature rise of the LBS contacts can then be found by adding the results from the two steps, according to (6).…”

Section: Estimate Temperature Rise Of Lbs Contacts (Step 3)mentioning

confidence: 99%

“…Another alternative, Thermal Network Method (TNM), which is based on lumped approximation of heat transfer by equivalent thermal resistors, capacitors and heat sources has lower requirements on the compute resources and corresponding calculation times, but the reported accuracy of this method is comparable to the CFD, see e.g. [4]- [6] in the hand of an expert user. The high accuracies reported for CFD and TNM are typically found when the simulations are performed with some experimental results available on similar designs as initial calibration point or as knowledge of the user.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Estimate the Temperature Rise of Medium Voltage Metal Enclosed Switchgear by Simplified Heat Transfer Calculations

Fjeld

Rondeel

Attar³

et al. 2021

IEEE Trans. Power Delivery

View full text Add to dashboard Cite

Electrical equipment will experience a rise in temperature during normal operation. During a development process, prototypes and laboratory tests will be required to make sure the temperature rises are within acceptable limits as defined by standards. The aim of having a tool to predict the temperature rise, is to reduce the number of prototypes and test loops needed in the laboratory during a development period. Advanced simulation tools such as CFD can give valuable results, however, they require expertise user and extensive compute and manpower allocation. This paper presents a practical design approach developed for providing a first, quick and rough estimate of the temperature rise of the most critical parts in an air insulated switchgear. The main idea behind the method is to first use the method described in IEC 60890 to estimate the temperature rise of the gas inside the switchgear. Then, simplified heat transfer calculations are used to estimate the over-temperature of critical parts relative to the surrounding gas. The accuracy of the temperature estimates will depend on how well the power input is known, especially the contact resistances. Further, it may be challenging to predict the influence of large metallic construction elements that may function as heat sinks.

show abstract

Section: Estimate Temperature Rise Of Lbs Contacts (Step 3)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Estimate the Temperature Rise of Medium Voltage Metal Enclosed Switchgear by Simplified Heat Transfer Calculations

Fjeld

Rondeel

Attar³

et al. 2021

IEEE Trans. Power Delivery

View full text Add to dashboard Cite

show abstract

“…Nonetheless, having simpler methods for predicting and verifying the temperature rise of the switching device is advantageous. The difference between the temperature of an element or part measured and the ambient air temperature outside a switchgear assembly is known as temperature rise [4][5][6]. The observed temperature difference between the main circuit and the temporary test connections at a distance of 1 m should not exceed 5 • C, according to IEC standard 62271-1 High-voltage switchgear and control gear-Part 1: Common specifications, paragraph 6.5.2.…”

Section: Introductionmentioning

confidence: 99%

An innovative method to conduct temperature rise test on medium voltage switchgear assembly based on IEC standards in a power grid

Iderus¹,

Peter²,

Ganji

2022

The Journal of Engineering

View full text Add to dashboard Cite

Modern civilization is characterised by a high need for electrical energy. The importance of electricity in daily life has grown to the point that it is desirable to safeguard the power system from damage during fault situations and to ensure maximum supply continuity, which necessitates the use of switchgear. Testing of any electrical equipment indicates the extent to which the equipment is able to comply with a customer's requirements. In this paper temperature rise test on a medium voltage switchgear assembly is considered. In this research, sub-clause 6.5.2 of IEC standard 62271-1 is followed to conduct temperature rise test on a medium voltage switchgear assembly. The test is conducted on two modes, first following the existing method of testing and second by an innovative method of testing. The temperature rise test is conducted on a 12 kV, 50 kA, 3150 A single busbar switchgear assembly and the readings are measured, analysed and compared between the two methods. It is concluded that the temperature rise recorded following the innovative method is more accurate compared to the existing method, as an increase in the recorded temperature rise is seen in all the thermocouple locations as the heat dissipation to the ambient is reduced.

show abstract

“…So this modelling method is easier to build and faster to calculate. LPTN model is widely used in the temperature prediction of GIS [15,16], transformers [17,18], motors [19][20][21] and other symmetrical power equipment. As the switchgear is big in volume and the thermal dissipation process is complex, there are only few LPTN models on the bus-bars other than the switchgear entity.…”

Section: Introductionmentioning

confidence: 99%

Precise multi‐dimensional temperature‐rise characterisation of switchgear based on multi‐conditional experiments and LPTN model for high‐capacity application

Wang

Xia

et al. 2020

High Voltage

View full text Add to dashboard Cite

As the power load increases, the capacity of switchgear becomes larger so the problem of overheating of switchgears becomes more significant. Whether the switchgears operate safely and reliably affects the reliability and economy of the entire power system. Different methods have been tried to study the thermal problems of switchgears. However, there are few experimental studies on the switchgear entity. In this study, a series of temperature rise tests were carried out on medium‐voltage high‐capacity switchgear to explore laws of temperature rise. First, five groups of multi‐conditional experiments were carried out including changes of the load current, ventilation conditions and loop resistance. Then, multi‐dimensional temperature‐rise characterisation was analysed based on the experimental results and the relating theory. Finally, a circuit‐based lumped‐parameter thermal network (LPTN) model was developed by analysing the heat dissipation in switchgear and used to determine the steady‐state temperature distribution of the switchgear. The model is verified by comparing the simulation results with the experimental results.

show abstract

Thermal behaviour analyses of gas‐insulated switchgear compartment using thermal network method

Cited by 15 publications

References 4 publications

Estimate the Temperature Rise of Medium Voltage Metal Enclosed Switchgear by Simplified Heat Transfer Calculations

Estimate the Temperature Rise of Medium Voltage Metal Enclosed Switchgear by Simplified Heat Transfer Calculations

An innovative method to conduct temperature rise test on medium voltage switchgear assembly based on IEC standards in a power grid

Precise multi‐dimensional temperature‐rise characterisation of switchgear based on multi‐conditional experiments and LPTN model for high‐capacity application

Contact Info

Product

Resources

About