This paper describes a solution of a protection algorithm intended to detect internal element failures for large capacitor and filter banks. For such banks typically H configuration is used.
In this paper, we introduce a method for performing unbalance calculations for high-voltage capacitor banks. We consider all common bank configurations and fusing methods and provide a direct ...
The paper mainly introduces the hardware design around the STM32 series micro controller and the design of the software on main programming algorithm of parameter measurement, communication protocol and capacitor protection configuration and the criterion of the major programming algorithm. It has great significance for the capacitor reactive power …
This paper presents an incremental quantity based distance protection algorithm for series compensated lines. The algorithm uses instantaneous voltage and current …
To address these challenges, a new distance protection algorithm for HVdc grids with modular multilevel converters (MMCs) is proposed in this article. The proposed algorithm identifies the faulty line/cable using the resonance frequency of a dc capacitor installed in each terminal. The technique was tested in a four-terminal HVdc grid with five ...
The study has observed the intelligent protection algorithms of AI and DL schemes due to their ability to interpret the hidden nature of fault events, using features data either time, …
The protection algorithm must be selective, effective, and fast. This is done so by verifying the protection algorithm in a hardware-in-loop environment. ... At steady state, the inductor in a DC circuit behaves as a short circuit, whereas a capacitor functions as an open circuit, hence providing infinite impedance to the current. In the ...
High frequency-based protection algorithm for meshed MTDC systems AhmedE.B.Abu-Elanien 1 · Ahmed A. Elserougi 1 Received: 2 May 2021 / Accepted: 16 March 2022 / Published online: 12 April 2022
The protection is one of the most important techniques for the modular multilevel converter (MMC) high-voltage dc (HVdc) system. The existing single-ended dc line protections are mainly based on the boundary characteristics, which are not suitable for the condition with no boundary element on the line terminal. In this article, the variation characteristics of …
The protection algorithm comprises three parts: i) the fault detection that detects any fault in the DC grid, regardless of its location, ii) the fault classification that classifies the
The mathematical derivations for voltage differential, compensated neutral voltage unbalance, phase current balance, and neutral current balance against short circuit protection of shunt capacitor ...
To address these challenges, a new distance protection algorithm for HVdc grids with modular multilevel converters (MMCs) is proposed in this article. The proposed algorithm identifies the faulty line/cable using the resonance frequency of …
Distance Protection Algorithm for Multiterminal HVDC Systems using the Hilbert-Huang Transform. August 2020; ... capacitors discharge at the first moment of the fault, short-circuit.
Optimal Capacitor Placement for Loss Reduction in Distribution Systems Using Bat Algorithm [3], and Combination of Fuzzy and Second Order PSO based Capacitor Placement in Radial Distribution Feeder [4]). The difficult issue in capacitor bank placement optimization is: 1. Complex of the network and un precision of network parameters 2.
Therefore, this work proposes a distance protection algorithm that uses the frequency of the DC voltage to estimate the fault distance in multiterminal HVDC systems. The frequency is estimated …
Conventional relays based on voltage peak detection exhibit serious shortcomings with respect to capacitor banks overvoltage protection. A harmonic simulation case study is presented, the purpose of which is to evaluate the performance of capacitor overvoltage relays in a static VAr compensator (SVC) installation. The concept of a computer-based …
However, it should be noted that differential protection, in general, requires synchronised data from both line ends, whereas the proposed algorithm is single-end protection. In summary and according to Table 7, the proposed protection algorithm is faster than the methods presented in [8, 14, 16, 21-26]. This is because these …
This paper presents a new first zone algorithm for distance protection of series compensated lines. The algorithm detects faults with the reach of 75-85% of the line length by measuring two distinctive impedances, using three adequate regions on the impedance plane and applying appropriate logic functions. The algorithm estimates …
This thesis proposes an algorithm that can detect the symmetric and asymmetric canceling failures, thereby improving the reliability of the capacitor bank unbalance protection.
The DC fault current rises sharply during faults due to the discharge of capacitors, therefore, fast protection algorithms are needed. Due to its intermittent nature, DERS undergoes islanding and non-islanding scenarios, and the fault current varies, which leads to disruption in the operation of the protection relays.
Abstract: This paper describes a solution of a protection algorithm intended to detect internal element failures for large capacitor and filter banks. For such banks typically H configuration is used. Different fuse arrangements are also discussed. The basic concept is to detect and record the number of failed elements; to identify the failure locations; to …
In this paper, according to the theoretical analysis of the distance protection and zero-sequence direction protection affected by series capacitor, it is presented that a microprocessor-based protection algorithm based on TCSC capacitor. The algorithm uses the operation parameters of TCSC, which considers the effect of the transient …
A protection system can employ only one of these methods or a combination of them. Finally, the main characteristics of the reviewed protection algorithms are compared, highlighting the system configuration, the converter technology, the adopted fault-clearing strategy, the implemented circuit breakers and the size of the …
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