Enhancement of PV Penetration With DSTATCOM in Taipower Distribution System

Chen, Chao‐Shun; Lin, Chia-Hung; Hsieh, Wei-Lin; Hsu, Cheng‐Ting; Ku, Te-Tien

doi:10.1109/tpwrs.2012.2226063

Cited by 95 publications

(48 citation statements)

References 21 publications

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“…(2) The existing STATCOM works, such as References [4][5][6][7] mentioned in Section 1, have the following limitations and are less robust than the proposed method. (i) The work of Wang and Crow in [4] needs to linearize the nonlinear system before applying the feedback linearization transformation.…”

Section: Discussion Of the Proposed Methodsmentioning

confidence: 99%

“…This may cause unexpected uncontrollability and chaotic behavior in the STATCOM dynamics. (ii) All the control gains in Chen's work [5] are fixed and not adaptive to a change of scenarios. (iii) Aziz's work in [6] addressed the application of STATCOM at the planning stage.…”

Section: Discussion Of the Proposed Methodsmentioning

confidence: 99%

“…The proposed IT2 fuzzy rule-based STATCOM is more robust than those described elsewhere [4][5][6][7]. The proposed method is implemented by integrating the NEPLAN software package with MATLAB/Simulink.…”

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confidence: 99%

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Interval Type-II Fuzzy Rule-Based STATCOM for Voltage Regulation in the Power System

Hong

Hsieh

2015

Energies

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Abstract:The static synchronous compensator (STATCOM) has recently received much attention owing to its ability to stabilize power systems and mitigate voltage variations. This paper investigates a novel interval type-II fuzzy rule-based PID (proportional-integral-derivative) controller for the STATCOM to mitigate bus voltage variations caused by large changes in load and the intermittent generation of photovoltaic (PV) arrays. The proposed interval type-II fuzzy rule base utilizes the output of the PID controller to tune the signal applied to the STATCOM. The rules involve upper and lower membership functions that ensure the stable responses of the controlled system. The proposed method is implemented using the NEPLAN software package and MATLAB/Simulink with co-simulation. A six-bus system is used to show the effectiveness of the proposed method. Comparative studies show that the proposed method is superior to traditional PID and type-I fuzzy rule-based methods.

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Section: Discussion Of the Proposed Methodsmentioning

confidence: 99%

Section: Discussion Of the Proposed Methodsmentioning

confidence: 99%

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Interval Type-II Fuzzy Rule-Based STATCOM for Voltage Regulation in the Power System

Hong

Hsieh

2015

Energies

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“…An example of a supervision tool can be found in [21], where a probabilistic load flow method to quantify the over-voltages in a residential distribution network with high penetration of PV is presented. Also, a variety of design and control strategies to achieve operational security of distribution networks under scenarios of large PV penetration: grid-scale battery storage system design method to overcome voltage variations is presented in [22], an optimization method based on VAR compensation assisted with a communication infrastructure is proposed in [23], the coordination between static-VAR compensation and On Load Tap Changer (OLTC) are explored in [24] and the benefits of using Static Synchronous Compensator (STATCOM) for dynamic voltage regulation to avoid PV curtailments in peak situations is shown in [25].…”

Section: Outline the Available Fit Payment Plans Ie Percentage Fitmentioning

confidence: 99%

Coordinated microgrid investment and planning process considering the system operator

et al. 2017

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Nowadays, a significant number of distribution systems are facing problems to accommodate more photovoltaic (PV) capacity, namely due to the overvoltages during the daylight periods. This has an impact on the private investments in distributed energy resources (DER), since it occurs exactly when the PV prices are becoming attractive, and the opportunity to an energy transition based on solar technologies is being wasted. In particular, this limitation of the networks is a barrier for larger consumers, such as commercial and public buildings, aiming at investing in PV capacity and start operating as microgrids connected to the MV network. To address this challenge, this paper presents a coordinated approach to the microgrid investment and planning problem, where the system operator and the microgrid owner collaborate to improve the voltage control capabilities of the distribution network, increasing the PV potential. The results prove that this collaboration has the benefit of increasing the value of the microgrid investments while improving the quality of service of the system and it should be considered in the future regulatory framework. KeywordsDistribution grid voltage control, microgrid design, model predictive control, photovoltaics. IntroductionThe number of photovoltaic (PV) installations have exponentially increased over the last decades and a more accelerated growth, pulled by the emerging economies, is expected by In addition, in order to maximize the on-site DER penetration it is a common practice to apply Demand Response (DR) procedures to decrease the load in peak hour conditions, These technical approaches to improve grid controllability proved to be very efficient in increasing the capabilities of distribution systems to host more PV capacity. However, they entail investment and operational costs to the distribution system operators (DSO) and, especially in scenarios of unbundling electricity sectors, DSOs have no interest in making those investments and bearing those costs. In fact, they have no motivation to enable more PV capacity, since their remuneration depends on electricity consumption and the 6 challenges of solar integration are mostly peak power related [19]. Moreover, the installation of photovoltaic units has the practical effect of reducing the net consumption of the prosumers, which decreases the income of the DSOs.The difficulties of the system to accommodate more solar power persist in most distribution networks, especially those that already have a considerable number of photovoltaic installations connected to the LV network. This is a particular barrier for larger consumers, such as commercial and public buildings, aiming at investing in PV capacity and start operating as microgrids connected to the MV network (e.g., [26] and [27]). Three main reasons explain the limitations imposed by the distribution grids to the microgrids investment and planning process: 1) microgrids require a significant amount of PV to justify the investments and, since all the capacity is conc...

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“…[4] analyze high PV penetration impacts on distribution system protection and operation. Using flexible ac transmission system and custom power devices (static VAR compensator (SVC) [5], static synchronous compensator (STATCOM) [6], distribution STATCOM (DSTATCOM) [7], superconducting magnetic energy storage (SMES) [8]), utilizing electric vehicle [9], storage system [10]- [12], and active power curtailment technique recommended in [13]- [15] are the most attractive techniques to mitigate those expected voltage violations.…”

mentioning

confidence: 99%

A Monitoring Technique for Reversed Power Flow Detection With High PV Penetration Level

Mortazavi

Mehrjerdi

Saad

et al. 2015

IEEE Trans. Smart Grid

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Abstract-Theintegration of renewable energy resources (RESs) in power systems poses many research challenges. Research shows that the RES output may exceed the consumed power during the day. Consequently, the direction of the power flow on distribution lines can be reversed during some periods. As the voltage regulator is normally designed for unidirectional power flow, this may cause voltage violations on the distribution feeder. Therefore, most utilities try to set a penetration level (PL) limit for safe operation. On the other hand, time varying and unbalanced loading are the main characteristics of distribution systems. Moreover installation of intermittent and nondispatchable photovoltaic (PV) devices increases the control problems of distribution system. This paper presents an impedance-based monitoring method for detection of distribution system current behavior. It will be shown that by utilizing this monitoring technique, not only the small variation of PV PL can be easily detected, but also some fast transients such as the effect of cloud movement on PV system can be monitored. This monitoring technique employs only local measurements of bus voltages and line current to measure the apparent impedance seen at the installation point. The practical application of measured impedance as a monitoring technique shows its effectiveness for distribution system monitoring in presence of various PV PL.

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Enhancement of PV Penetration With DSTATCOM in Taipower Distribution System

Cited by 95 publications

References 21 publications

Interval Type-II Fuzzy Rule-Based STATCOM for Voltage Regulation in the Power System

Interval Type-II Fuzzy Rule-Based STATCOM for Voltage Regulation in the Power System

Coordinated microgrid investment and planning process considering the system operator

A Monitoring Technique for Reversed Power Flow Detection With High PV Penetration Level

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