New area measuring and decision algorithm concepts for power lines' distance protection

Halinka, A.; Rzepka, P.; Sowa, P.; Szablicki, M.

doi:10.1109/epe.2017.7967249

Cited by 3 publications

(2 citation statements)

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“…Some authors are proposing PSP implementation in distribution networks that are used in transmission networks [7]. Furthermore, many authors are proposing quite new protection functions for PSP [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Simulation Verification of Overcurrent Protection Operation in Power Networks Integrating Renewable Energy Sources in Energy Communities

2021

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This publication discusses the risks of further use of classical overcurrent protections in modern power systems. The increasing penetration of renewable energy sources has caused a lot of challenges, among other things, the development of energy communities that balance local generation and consumption. Usually the interconnection line between the energy community and power systems are only used to balance the shortage or overflow of energy. As a result, most of the time these connections can be low loaded. Such a state can cause incorrect operation of power system protection approached, because the current level values are smaller than the required activation level for the protections. This article presents the potential incorrect operation of digital power system protection with overcurrent function. The obtained simulation results clearly show that the correctness of protection operation is strongly dependent on the level load of lines and the parameters and structure of the protection decision algorithms. These problems occur during low load line periods because these were not taken into account during the classical digital protection design stage. In the future this can cause problems with the fulfillment of the basic protection requirements of stability, speed, sensitivity. This publication suggests extra problems for power system protection research.

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Section: Introductionmentioning

confidence: 99%

Simulation Verification of Overcurrent Protection Operation in Power Networks Integrating Renewable Energy Sources in Energy Communities

2021

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“…In [7] is proposed that implementation in distribution networks of the PSP previously used in transmission networks. You can also use quite new protection functions of PSP, presented among others in [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Risk Analysis of the Power System Protection Delayed Triggers in Power Network Integrating Renewable Energy Sources in Fault Dynamic States

Szablicki¹,

Rzepka²,

Halinka³

2020

Preprint

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In the development of power systems it is indicated very often, that transformation of power systems should be carried out in accordance with the idea of energy democracy. This will develop energy communities, that are trying to meet energy needs by using local renewable generation sources. This may result with a temporary low load on the MV lines connecting the community grid and the power system. Such state may cause incorrect operation of power protection systems. This can cause an extended protection operation time, due to decision algorithms inactivity at low values of measurement currents. Therefore, the detailed MV lines overcurrent digital protection model and a dynamic model of the power network were developed. The simulation results are showing that the settings of the parameters activating the protection decision algorithms affect their operation time in dynamic conditions. The conclusion is that the development of the power protection automatics must be carried out in the same time (preferably in advance) with the change of the power system operation model. This is very important for future power systems with high penetration energy communities and renewable generation sources.

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Diagnosis of challenges for power system protection – selected aspects of transformation of power systems

Szablicki

Rzepka

Halinka

et al. 2019

2019 Modern Electric Power Systems (MEPS)

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New area measuring and decision algorithm concepts for power lines' distance protection

Cited by 3 publications

References 1 publication

Simulation Verification of Overcurrent Protection Operation in Power Networks Integrating Renewable Energy Sources in Energy Communities

Simulation Verification of Overcurrent Protection Operation in Power Networks Integrating Renewable Energy Sources in Energy Communities

Risk Analysis of the Power System Protection Delayed Triggers in Power Network Integrating Renewable Energy Sources in Fault Dynamic States

Diagnosis of challenges for power system protection – selected aspects of transformation of power systems

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