Distribution voltage control considering the impact of PV generation on tap changers and autonomous regulators

Agalgaonkar, Yashodhan P.; Pal, Bikash; Jabr, Rabih A.

doi:10.1109/pesgm.2014.6938786

Cited by 63 publications

(78 citation statements)

References 8 publications

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“…Also, all the chance constraints are replaced by the deterministic constraints. The deterministic optimization is setup and a penalty function approach is utilized to avoid VR runaway as proposed in [11]. The coordinated operation of OLTC, VR, and PV plant is achieved and detailed voltage setpoint calculation is carried out as per the procedure explained in [11].…”

Section: B Resultsmentioning

confidence: 99%

“…There are several operational scenarios when a VR runaway is possible. Detailed description of the runaway phenomenon can be found in [11]. This phenomenon results in the operation of the VR either at the lowest or at the highest tap position.…”

Section: ) Bus Voltagementioning

confidence: 99%

“…Furthermore, during the runaway operation, the controllability of VR is lost. A detailed assessment of the effect of PV on VR runaway is presented in [11]. Some of these challenges are addressed through supervisory control [12]- [14].…”

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confidence: 99%

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Stochastic Distribution System Operation Considering Voltage Regulation Risks in the Presence of PV Generation

Agalgaonkar

Pal

Jabr

2015

IEEE Trans. Sustain. Energy

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Variable over voltage, excessive tap counts, and voltage regulator (VR) runaway condition are major operational challenges in distribution network while accommodating generation from photovoltaics (PVs). The conventional approach to achieve voltage control based on offline simulation for voltage set point calculation does not consider forecast errors. In this work, a stochastic optimal voltage control strategy is proposed while considering load and irradiance forecast errors. Stochastic operational risks such as overvoltage and VR runaway are defined through a chance constrained optimization (CCO) problem. This classical formulation to mitigate runaway is further improved by introducing a stochastic index called the Tap Tail Expectation. Operational objectives such as power losses and excessive tap count minimization are considered in the formulation. A sampling approach is proposed to solve the CCO. Along with other voltage control devices, the PV inverter voltage support features are coordinated. The simulation study is performed using a realistic distribution system model and practically measured irradiance to demonstrate the effectiveness of the proposed technique. The proposed approach is a useful operational procedure for distribution system operators. The approach can minimize feeder power losses, avoid voltage violations, and alleviate VR runaway.Index Terms-Distribution voltage control, photovoltaic (PV) forecast errors, voltage regulator (VR) runaway.

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Section: B Resultsmentioning

confidence: 99%

Section: ) Bus Voltagementioning

confidence: 99%

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Stochastic Distribution System Operation Considering Voltage Regulation Risks in the Presence of PV Generation

Agalgaonkar

Pal

Jabr

2015

IEEE Trans. Sustain. Energy

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“…Recently, in order to decrease the investment cost, many studies [4], [13]- [21] have employed the remaining capacity margin of the PV inverter to absorb/release reactive power to regulate the PCC voltage of PV systems, which has been termed PV-STATCOM. According to methods for determining reactive power commands, PV-STATCOM can be divided into two types, namely local control [13]- [17] and central control [18]- [21].…”

Section: Introductionmentioning

confidence: 99%

“…According to methods for determining reactive power commands, PV-STATCOM can be divided into two types, namely local control [13]- [17] and central control [18]- [21].…”

Section: Introductionmentioning

confidence: 99%

MF-APSO-Based Multiobjective Optimization for PV System Reactive Power Regulation

Yang

Liao

2015

IEEE Trans. Sustain. Energy

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This paper proposes a reactive power-regulation strategy for a distribution system connected with high-penetration photovoltaic (PV) generation. The PV reactive power regulation is formulated as a multiobjective optimization problem to relieve the overvoltage caused by high PV penetration and to minimize total line loss. With integrated power-flow analysis, a new mutation fuzzy adaptive particle swarm optimization (MF-APSO) algorithm is proposed to solve the multiobjective optimization problem. The proposed reactive power-regulation strategy and MF-APSO algorithm are, respectively, compared with conventional methods for overvoltage mitigation and total line-loss reduction, as well as with the referenced optimization algorithms for the problems of concern. Numerical results verify that the proposed multiobjective optimization method can more effectively mitigate the overvoltage issue and greatly reduce the total line loss as compared to other methods. Utilization of high-penetration PV systems can thus be further enhanced with reduced power curtailment owing to the added functions of voltage regulation and line-loss minimization.Index Terms-Distributed power generation, Pareto-optimal set, particle swarm optimization (PSO), photovoltaic (PV) systems, reactive power control.

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Impact and assessment of the overvoltage mitigation methods in low‐voltage distribution networks with excessive penetration of PV systems: A review

Hamza

Sedhom

Badran

2021

Int Trans Electr Energ Syst

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This paper presents an overview of the impact of high penetration of photovoltaic (PV) systems in low-voltage distribution networks (LVDNs). High integration of solar PVs in the LVDNs has severe implications on the system parameters, efficiency, and stability. This paper also introduces the methods that have been driven to overcome these effects to preserve the steady-state conditions in the system during excessive penetration of PV generation units. A comparison between the contributions and shortcomings of the most recent researches for overvoltage mitigation strategies has been driven. Also, it includes comparing different overvoltage mitigation methods to handle the impact of the overvoltage under high penetration of PV units in the LVDNs. Besides, it presents a comparison between overvoltage mitigation methods based on their pros and cons.

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Distribution voltage control considering the impact of PV generation on tap changers and autonomous regulators

Abstract: Abstract-The uptake of variable Mega Watts(MW) from

Cited by 63 publications

References 8 publications

Stochastic Distribution System Operation Considering Voltage Regulation Risks in the Presence of PV Generation

Stochastic Distribution System Operation Considering Voltage Regulation Risks in the Presence of PV Generation

MF-APSO-Based Multiobjective Optimization for PV System Reactive Power Regulation

Impact and assessment of the overvoltage mitigation methods in low‐voltage distribution networks with excessive penetration of PV systems: A review

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