Controller hardware in the loop approaches supporting rapid prototyping of smart low voltage grid control

Faschang, Mario; Schwalbe, Roman; Einfalt, Alfred; Mosshammer, Ralf

doi:10.1109/isgteurope.2014.7028815

Cited by 4 publications

(6 citation statements)

References 8 publications

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“…Note that, (37) and (38) is same as (32) and (33). If (34), (35) and (38) are solved, then only sub-gradient optimality conditions are met which are necessary but not sufficient. If (36) and (39) are solved with aforementioned equations, then it provides necessary and sufficient conditions to find the optimal solution…”

Section: Solution Strategymentioning

confidence: 99%

“…However, this result may vary based on the fault location, fault impedance and fault type. The designed controller's transient performance is experimentally validated to test the timing constraint using a controller hardwarein-the-loop (C-HIL) approach [35]. A TMS320F28335 microcontroller-based DSP control card is programmed to provide the PWM pulses to the inverter at bus 675.…”

Section: Case 5: Impact Of X/r Ratio Changementioning

confidence: 99%

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Distributed dynamic grid support using smart PV inverters during unbalanced grid faults

Shuvra

Chowdhury

2019

IET Renewable Power Generation

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A dynamic voltage support strategy using smart photovoltaic (PV) inverters during unbalanced grid faults events is proposed. It uses Karush-Kuhn-Tucker condition for finding optimal solutions to calculate the inverter's active and reactive current references. The proposed methodology also takes the X/R ratio into consideration which allows the inverter to differentiate weak or strong grid conditions and adjust its reference currents. Existing multiple-complex coefficient-filter based phase locked loop is used to extract the positive and negative sequence components. The proposed strategy deploys existing dual vector current control to ensure optimal current injection and low voltage ride through. A distributed ride-through coordination approach among multiple inverters is also proposed based on different optimisation goals-either fundamental positive or fundamental negative sequence voltage support. The strategy is simulated, and inverter's transient performance is experimentally verified on a modified IEEE-13 bus test feeder using controller hardware-in-the-loop approach. Results show substantial evidence that the proposed method can be successfully applied to support the grid during an unbalanced fault event. Table 1 Voltage ride-through requirement Voltage range, p.u. Clearing time, s

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Section: Solution Strategymentioning

confidence: 99%

Section: Case 5: Impact Of X/r Ratio Changementioning

confidence: 99%

Distributed dynamic grid support using smart PV inverters during unbalanced grid faults

Shuvra

Chowdhury

2019

IET Renewable Power Generation

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“…The validation of the proposed control strategies is carried out at the proof-of-concept phase. At that stage, models of IEDs (e.g., smart meters) and DERs (e.g., BESS) are built and deployed into a power system emulator (e.g., MATLAB/Simulink, DlgSILENT PowerFactory), along with the control logic of the EMS [15]. The transition from design to proof-of-concept may entail communication and stability issues that were not considered at the design stage.…”

Section: Specification and Development Processmentioning

confidence: 99%

Rapid Prototyping of Multi-Functional Battery Energy Storage System Applications

et al. 2018

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Battery Energy Storage Systems (BESS) are starting to play an important role in today’s power distribution networks. They provide a manifold of services for fulfilling demands and requests from diverse stakeholders, such as distribution system operators, energy market operators, aggregators but also end-users. Such services are usually provided by corresponding Energy Management Systems (EMS). This paper analyzes the complexity of the EMS development process resulting from an evolving power utility automation.

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“…Furthermore, a shut-down of electric supply networks include costly measures. Hence, CHIL is a cost effective method compared to tests with real systems [18]. During real operation the communication interface of the CVCU has the task of communication between the controller and SCADA system of the distribution network operator.…”

Section: B Investigations On Voltage Stability Of Networkmentioning

confidence: 99%

Analyzing standardization needs for CHIL-based testing of power systems and components

Lauss¹,

Andrén²,

Leimgruber³

et al. 2018

2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)

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Real-time simulation methods for investigations on electric networks and integration of grid connected generation units are increasingly in the focus of ongoing research areas. While laboratory testing methods are the predominant method for the verification of safety and quality related features of gridconnected generation units in the past, load flow modeling verification methods have been integrated in state-of-the-art standardization frameworks recently. The next step is comprised in real-time simulation methodologies applied for compliance testing of entire power electronic systems integrated in power distribution networks. The Controller Hardware-in-the-Loop (CHIL) approach is an appropriate methodology that combines numerical simulations with software modeling approaches and classical hardware testing in labs. Control boards represent the hardware device directly connected to the power electronic periphery, which is entirely simulated in a real-time simulation environment. Hereby, input signals from voltage and current measurements and output signals for power system control are exchanged in real-time. Thanks to this setup the testing of the true behavior of entire generation units within the electric network can be emulated precisely. With the application of CHIL a shorter time to market and a lower risk in the development phase can be achieved. However, an analysis from realized CHIL experiments shows the need for more harmonized procedures. This paper addresses this topic and provides an outlook about necessary future CHIL standardization needs.

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Controller hardware in the loop approaches supporting rapid prototyping of smart low voltage grid control

Cited by 4 publications

References 8 publications

Distributed dynamic grid support using smart PV inverters during unbalanced grid faults

Distributed dynamic grid support using smart PV inverters during unbalanced grid faults

Rapid Prototyping of Multi-Functional Battery Energy Storage System Applications

Analyzing standardization needs for CHIL-based testing of power systems and components

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