Adaptive Tuning of Frequency Thresholds Using Voltage Drop Data in Decentralized Load Shedding

Hoseinzadeh, Bakhtyar; Silva, Filipe Miguel Faria da; Bak, Claus Leth

doi:10.1109/tpwrs.2014.2351015

Cited by 63 publications

(45 citation statements)

References 21 publications

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“…It is worth noting that adaptive droop control is a method already considered in several studies such as [12][13][14][15][16][17][18], which, however, focus on local operation levels such as the operation of single devices, e.g., inverters or implementation at microgrid level at most. Besides that, various research studies such as [19,20] address the issue of the optimal restoration rather than the frequency containment itself in an optimal way.…”

Section: Fuzzy Logic Controller Selection and Designmentioning

confidence: 99%

Adaptive Fuzzy Control for Power-Frequency Characteristic Regulation in High-RES Power Systems

et al. 2017

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Future power systems control will require large-scale activation of reserves at distribution level. Despite their high potential, distributed energy resources (DER) used for frequency control pose challenges due to unpredictability, grid bottlenecks, etc. To deal with these issues, this study presents a novel strategy of power frequency characteristic dynamic adjustment based on the imbalance state. This way, the concerned operators become aware of the imbalance location but also a more accurate redistribution of responsibilities in terms of reserves activations is achieved. The proposed control is based on the concept of "cells" which are power systems with operating capabilities and responsibilities similar to control areas (CAs), but fostering the use of resources at all voltage levels, particularly distribution grids. Control autonomy of cells allows increased RES hosting. In this study, the power frequency characteristic of a cell is adjusted in real time by means of a fuzzy controller, which curtails part of the reserves, in order to avoid unnecessary deployment throughout a synchronous area, leading to a more localised activation and reducing losses, congestions and reserves exhaustion. Simulation tests in a four-cell reference power system prove that the controller significantly reduces the use of reserves without compromising the overall stability.

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Section: Fuzzy Logic Controller Selection and Designmentioning

confidence: 99%

Adaptive Fuzzy Control for Power-Frequency Characteristic Regulation in High-RES Power Systems

et al. 2017

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“…The techniques reported in Hoseinzadeh et al() suggest decentralized scheme of load shedding based on locally measured data, which are independent of power system inertia and topology. Distributed strategy has the advantage of dealing with renewable energy sources, cascading events, and islanding condition.…”

Section: Introductionmentioning

confidence: 99%

“…Among the above reviewed papers, only Shekari et al and Hoseinzadeh et al() involve the voltage data in their method, while considering the voltage dynamics is strongly recommended by IEEE standard . The voltage is a key state variable that reflects local stability of power system and has an exclusive category in the stability study .…”

Section: Introductionmentioning

confidence: 99%

Centralized coordination of load shedding and protection system of transmission lines

Hoseinzadeh

Bak

2018

Int Trans Electr Energ Syst

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Summary The power system integrity is vulnerable to thermal limit of transmission lines due to overloading and consequently activation of their protection devices following severe contingencies. In this paper, the loading rate of transmission lines is monitored online and is considered in the centralized load shedding to concentrate the control action on loads causing line loading rate violation to prevent cascading failure of lines. To this aim, the loads are ranked based on a criterion called Outage Sensitivity Index (OSI) considering the loading rate of line, the apparent power of the line prone to outage (event scale/severity), and the voltage magnitude. The load shedding as the available control action is localized to focus on the loads with higher OSI, ie, higher impact on the critical elements prone to outage. The efficiency of proposed approach is validated using severe contingency scenarios including cascading events leading to islanding situation performed in DigSilent Power Factory software on 39 bus IEEE standard test system.

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“…A few of the prior LSH studies are concerned with the concurrent recovery of voltage and frequency, with most of them concentrating on transmission systems and a few focusing on distribution systems …”

Section: Introductionmentioning

confidence: 99%

“…This scheme calculates the amount and the best location of load to be rejected according to a network frequency response model and voltage vulnerability criteria, respectively. Hoseinzadeh et al put forward a decentralized voltage and frequency LSH approach in which the threshold amounts of frequency LSH relays are computed through the use of voltage fluctuations on load buses.…”

Section: Introductionmentioning

confidence: 99%

Network partitioning for voltage and frequency recovery in an inverter‐based distribution power system

Nourollah

Pirayesh

2017

Int Trans Electr Energ Syst

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Summary In distribution systems, protection schemes are highly important. Recently, load shedding (LSH) is attracting more attention in stability margin enhancement of voltage and frequency in microgrids. This paper introduces a regionalization‐based multilevel technique (RMLT) via a combination of frequency and voltage LSH in inverter‐based autonomous AC distribution systems. The aim is to simultaneously restore voltage and frequency to their desired ranges in the event of severe disturbances and also in emergency conditions. In the RMLT, to determine the proper load to be shed and to enable LSH in the system operation mode (ie, real‐time mode) following each pernicious event, it is proposed that a recurrent online study be performed on network topology and the sensitivity of voltage to real power. In this case, the quick achievement of accurate results implies the regionalization of the system into several zones from the point of view of network topology and voltage and the assignment of an agent to each zone. The RMLT is simulated on a standard IEEE 37‐bus distribution system, and the results obtained confirmed the appreciable increase in the security margin of voltage and frequency and the decrease in the probability of system tripping.

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Adaptive Tuning of Frequency Thresholds Using Voltage Drop Data in Decentralized Load Shedding

Cited by 63 publications

References 21 publications

Adaptive Fuzzy Control for Power-Frequency Characteristic Regulation in High-RES Power Systems

Adaptive Fuzzy Control for Power-Frequency Characteristic Regulation in High-RES Power Systems

Centralized coordination of load shedding and protection system of transmission lines

Network partitioning for voltage and frequency recovery in an inverter‐based distribution power system

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