Modeling methodology and fault simulation of distribution networks integrated with inverter-based DG

Wang, Longchang; Gao, Houlei; Zou, Guibin

doi:10.1186/s41601-017-0058-9

Cited by 28 publications

(16 citation statements)

References 12 publications

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“…where σ is the centering parameter between 0 and 1; n is the number of slack variables. Repeating Equations (23)- (25) until the convergence conditions are satisfied.…”

Section: Primal-dual Interior Point Methodsmentioning

confidence: 99%

“…Firstly, the Latin hypercube sampling (LHS) method [21] is used to generate scenarios of power outputs of DGs and load consumption, and the number of generated scenarios is reduced using the simultaneous backward reduction technique [22]. Secondly, based on the typical scenarios, an RPP model considering the active and reactive power adjustments of DGs is proposed to determine the optimal allocation of VAR compensators [23][24][25]. Finally, the proposed RPP model is solved by the proposed primal dual interior point (PDIP) method-based particle swarm optimization (PSO) algorithm.…”

Section: Introductionmentioning

confidence: 99%

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Reactive Power Planning for Regional Power Grids Based on Active and Reactive Power Adjustments of DGs

Shen

Chen

et al. 2018

Energies

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To deal with extreme overvoltage scenarios with small probabilities in regional power grids, the traditional reactive power planning model requires a huge VAR compensator investment. Obviously, such a decision that makes a large investment to cope with a small probability event is not economic. Therefore, based on the scenario analysis of power outputs of distributed generations and load consumption, a novel reactive power planning model considering the active and reactive power adjustments of distributed generations is proposed to derive the optimal allocation of VAR compensators and ensure bus voltages within an acceptable range under extreme overvoltage scenarios. The objective of the proposed reactive power planning model is to minimize the VAR compensator investment cost and active power adjustment cost of distributed generations. Moreover, since the proposed reactive power planning model is formulated as a mixed-integer nonlinear programming problem, a primal-dual interior point method-based particle swarm optimization algorithm is developed to effectively solve the proposed model. Simulation results were conducted with the modified IEEE 30-bus system to verify the effectiveness of the proposed reactive power planning model.

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“…where σ is the centering parameter between 0 and 1; n is the number of slack variables. Repeating Equations (23)- (25) until the convergence conditions are satisfied.…”

Section: Primal-dual Interior Point Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reactive Power Planning for Regional Power Grids Based on Active and Reactive Power Adjustments of DGs

Shen

Chen

et al. 2018

Energies

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show abstract

“…where D d and D q are stable GSC duty cycles in the dq frame, respectively; and I gd and I gq are GSC output currents at a steady operation point in the dq frame. By rearranging Equations (26) and (27), the small-signal transfer model can be obtained as:…”

Section: Small-signal Modeling Of the Gsc Circuitmentioning

confidence: 99%

“…RTDS is a kind of commercial simulator that is widely used around the world. Compared with other simulation platforms, RTDS has many advantages such as its faster computing speed and real-time interconnection with practical devices [26][27][28][29]. In order to validate a frequency-domain stability analysis of the equivalent model based on the impedance method, a time-domain DFIG-based system is built by the real-time simulator CAD (RSCAD), which is connected to RTDS.…”

Section: Rtds Simulation Verificationmentioning

confidence: 99%

Impedance Modeling and Stability Analysis of the Converters in a Double-Fed Induction Generator (DFIG)-Based System

Chen¹,

Liu²

2019

Energies

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Harmonic stability of double-fed induction generators (DFIGs) now has become a significant topic because of its harmful impact on power quality issues of the system. Since the double pulse width modulation (PWM) converter is one of the main harmonic sources in DFIGs, it may cause harmonic instability with increasing harmonic contents. Thus, the modeling and stability analyses of PWM converters in DFIGs are essential steps to assess the harmonic stability of DFIGs. Aiming at dual PWM converters, which include the grid side converter (GSC) and the rotor side converter (RSC), this paper divides converters into two parts: circuit modules and control modules. Closed-loop input impedance models of each module are then derived by means of transfer functions. Hence, the stability of the system can be readily predicted through Nyquist diagrams. The contributions of parameters to the system’s harmonic stability are also identified. Finally, time-domain simulations are conducted in a real-time digital simulation (RTDS) system. Simulation results confirm that the established impedance model can effectively reveal the stability of the DFIG-based system and can give critical conditions for the occurrence of harmonic instability.

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“…The electricity industry has paid increasing attention to the distributed energy resources (DERs) and used them to address and overcome these challenges. Typically, DERs are connected to the middle-low voltage distribution networks and serve as the power supply for local demand [2,3].…”

Section: Introductionmentioning

confidence: 99%

Reactive power operability of distributed energy resources for voltage stability of distribution networks

Xiang

Zhang

et al. 2019

J. Mod. Power Syst. Clean Energy

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The penetration level of distributed energy resources (DERs) is increasing and has significant impact on the voltage stability of distribution networks. Based on the various types of DERs with distinct reactive power characteristics (RPC), their different contributions to the system voltage stability require classification. Firstly, the features of DERs are reviewed and classified based on their RPC, to investigate different distributed generation technologies for reactive power support in distribution networks. Then, the concept of a relative available transmission capacity index (RATCI), which is based on power transfer margin of the power-voltage curve considering the non-negligible distribution network resistance, is proposed to quantify and evaluate the voltage stability by integrating DERs with the defined reactive power types. Case studies have been conducted for an IEEE 33-bus distribution network to calculate the system RATCI for the mixed integration of DERs. Results show that the multitype and multi-locational integration of DERs can improve the voltage stability of a distribution network.

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Modeling methodology and fault simulation of distribution networks integrated with inverter-based DG

Cited by 28 publications

References 12 publications

Reactive Power Planning for Regional Power Grids Based on Active and Reactive Power Adjustments of DGs

Reactive Power Planning for Regional Power Grids Based on Active and Reactive Power Adjustments of DGs

Impedance Modeling and Stability Analysis of the Converters in a Double-Fed Induction Generator (DFIG)-Based System

Reactive power operability of distributed energy resources for voltage stability of distribution networks

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