Optimal Power Flow for Hybrid AC/MTDC Systems

Alshammari, Khaled; Alsiraji, Hasan Alrajhi; El-Shatshat, Ramadan

doi:10.1007/s13369-021-05983-z

Cited by 4 publications

(2 citation statements)

References 36 publications

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“…1. Since the implementation of the MTDC system trend is toward both transmission and distribution levels [5], power sharing among DC converter terminals has become the main pillar of MTDC system stability and operation perspectives [6].…”

Section: Introductionmentioning

confidence: 99%

An Adaptive Wireless Power Sharing Control for Multiterminal HVDC

Alsiraji¹

2023

Computer Systems Science and Engineering

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Power sharing among multiterminal high voltage direct current terminals (MT-HVDC) is mainly developed based on a priority or sequential manners, which uses to prevent the problem of overloading due to a predefined controller coefficient. Furthermore, fixed power sharing control also suffers from an inability to identify power availability at a rectification station. There is a need for a controller that ensures an efficient power sharing among the MT-HVDC terminals, prevents the possibility of overloading, and utilizes the available power sharing. A new adaptive wireless control for active power sharing among multiterminal (MT-HVDC) systems, including power availability and power management policy, is proposed in this paper. The proposed control strategy solves these issues and, this proposed controller strategy is a generic method that can be applied for unlimited number of converter stations. The rational of this proposed controller is to increase the system reliability by avoiding the necessity of fast communication links. The test system in this paper consists of four converter stations based on three phase-two AC voltage levels. The proposed control strategy for a multiterminal HVDC system is conducted in the power systems computer aided design/electromagnetic transient design and control (PSCAD/EMTDC) simulation environment. The simulation results significantly show the flexibility and usefulness of the proposed power sharing control provided by the new adaptive wireless method.

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Section: Introductionmentioning

confidence: 99%

An Adaptive Wireless Power Sharing Control for Multiterminal HVDC

Alsiraji¹

2023

Computer Systems Science and Engineering

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“…Authors (Santos et al, 2019;Deb et al, 2022) use the multi-agent intelligent load shedding method. Authors (Banijamali and Amraee, 2018;Alshammari et al, 2022) describe a method for tripping loads in the case of generator failure.…”

Section: Introductionmentioning

confidence: 99%

Load shedding for frequency and voltage control in the multimachine system using a heuristic knowledge discovery method

et al. 2022

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The voltage profile of different buses and the rotor dynamics of generators are adversely affected by a generator outage. Generator outages can be minimized using a variety of strategies and algorithms. An AI-based knowledge discovery approach has been reported in this article. This article proposes a technique for identifying sensitive loads and the amount of active and reactive power curtailment for rotor speed regulation and voltage management at the terminals. The MATLAB®/Simulink environment verifies and tests the method’s practicality on an IEEE-10-machine-39-bus system. Active power shedding is considered for rotor angle stability, while reactive power is also shedded for maintaining the terminal voltage at the loads. A sequential outage is considered to simulate a scenario where the two generators with the highest active and reactive power are taken out of service. The generator’s rotor speed, terminal voltage, and load are measured with and without load restriction. In all situations, the rotor and center of inertia speed are 1 p.u. The average steady-state load terminal voltage is 0.967 V. The average terminal voltage of all load buses improves from 0.933 to 0.972 and 0.936 to 0.971, case-wise. The reported results confirm and validate the effectiveness and applicability of the proposed technique.

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