Twenty-three percent of carbon emissions come from fossil fuels used in transportation. Electric vehicles are suggested as alternatives to fossil-fueled vehicles. Cars having vehicle integrated photovoltaics (VIPV) on the roof have recently been launched, aiming increase fuel efficiency and maximum mileage by supplying electricity when needed. VIPV needs be light terms efficiency. The use polymeric materials, made low-iron tempered glass front that contributes significantly module’s weight,...

The power industry is rapidly changing as demand for eco-friendly and stable supply increases along with global greenhouse gas emission regulations. Small-capacity renewable sources represented by photovoltaics wind are continuously increasing a form of microgrid to electric community or island. As result, microgrids based on resources have come into wide usage around small areas islands in Korea. In particular, the development policy Korea focused quality, well expansion energy reducing...

Abstract Geothermal technology has a high level of uncertainty and, thus, requires thorough risk analysis for economic decisions. The levelized cost energy (LCOE) is basic widely used in determining an investment or mix. Many reputable institutions and government agencies provide LCOE, to which they apply different levels discount rates reflect project risk. To this end, the weighted average capital (WACC) frequently as proxy risk-adjusted rate. However, whether using higher rate riskier...

Operation and control system has been installed tested to use energy storage system(ESS) for frequency regulation at 4MW class of ESS demonstration facility Jeju island, Korea in 2013. Simulation tests were performed by programing language C# power island develop algorithm. Site simulation itself without connecting system. Control algorithm was coded, modified load controller communication human-machine interface developed the process tests. After similar results that obtained, connected...

Electric vehicles are now drastically distributed among U.S.A, Japan and European Countries. Especially hybrid cars main target of electric vehicle. Now the which can charge electricity from outer AC grid(110V/220V/380V) were made they called PHEV (plug-in vehicle). In 2012 will be produced in Korea. this time it is very important that we predict its future distribution volume. However until not analyzed by any technical model. paper propose demand prediction using Bass' diffusion formula...

This paper presents a study on reliability assessment and new contribution function development of power system including Wind Turbine Generator(WTG) combined with Battery Energy Storage System(BESS). develops proposes BESS installed at wind farms. The methodology assessment, using Monte Carlo Simulation(MCS) method to simulate sample state duration, is proposed in detail. Forced Outage Rate(FOR) considered probabilistic approach for conventional generators modelled this paper. penetration...

This paper proposes probabilistic reliability evaluation model of power system considering Wind Turbine Generator(WTG) integrated with Energy Storage System(ESS). Monte carlo sample state duration simulation method is used for the evaluation. Because output from WTG units usually fluctuates randomly, cannot be counted on to continuously satisfy load. Although at any time not controllable, can utilized by ESS. The ESS may make smooth fluctuation output. detail process cooperated presented...

Load management program in Korea is classified into two classes. One related with load equipments, such as demand controller, remote control air-conditioner, and thermal storage systems et al. The other incentive for reduction by customer's willingness. Typical element the determination of customer basehne(CBL) load. It forecasting each customer. Two methods have been proposed to get this solution, regression or statistical method. suggested that method better than at very random loads. This...

We present the analysis on 3 current-limiting practices, a bus-bar split, installation of current limiting reactor (CLR), and application fault limiter (FCL) in KEPCO's 345 kV power grid. The trunk T/Ls are suffering from high currents. Circuit breaker replacements currently being practiced many substations. As alternative ways control, three practices has been investigated. All limit currents effectively, but they create unexpected problems when coupled with concomitant phenomena associated...

Analysis of lightning induced overvoltage has been accepted as one important subjects for design better protection system power lines, especially distribution with lower voltage rather than transmission line system. For estimation performance parametric analysis is very useful and necessary to taking many factors, such distance between surge arresters, into account. In this paper, LIV-ATP, which MODELS code inside ATP (Alternative Transient Program), was compiled overcome slow execution time...

The Korean government plans to install 17 GW of wind power capacity by 2027. However, farm locations, individual generation capacities, and the strategies for minimizing variability have not yet been defined. In this paper, best locations are identified based on annual speeds availability, farms at each selected location allocated using a weighted evaluation method. addition, proposed in paper aggregation (to take advantage smoothing effect) integration energy storage systems smoothen output...

This paper deals with the reliability of VSC HVDC valve MMC(Modular Multilevel Converter) based system. The final destination this is to determine redundancy MMC valve. For this, several prediction methods were introduced, finally, used method "binomial failure method". To evaluate an availability and a valve, which was composed DC/DC converter, gate driver, capacitor IGBTs, datum module tracking data, that is, on experimental results. highlight use simplified equation find redundancy,...

Forms of sustainable finance have grown rapidly in recent years, as a growing number institutional investors and funds incorporate various Environmental, Social Governance (ESG) investing approaches.While the mainstreaming forms is welcome development, terminology practices associated with ESG vary considerably.One reason for this that has evolved from socially responsible investment philosophies into distinct form investing.While earlier approaches used exclusionary screening value...

This paper describes a new methodology and case study for probabilistic reliability based grid expansion planning of High-Voltage Direct-Current (HVDC) in power system that includes Wind Turbine Generators (WTG). problem is focused on deciding best connection bus transmission lines HVDC viewpoint including WTG. requires two kinds modeling simulation evaluation. First one how evaluation model Another to develop failure HVDC. Furthermore, this should be formulated hierarchical level II (HLII)...

This paper describes an alternative model, methodology, and case study for probabilistic reliability-based planning High-Voltage Direct-Current (HVDC) grid expansion in a power system that includes wind turbine generators (WTGs). Ensuring the reliability of such requires multi-state simulation because intermittent characteristics speed. The AC/DC converter DC/AC inverter substation. substation is composed many thyristor devices, which can potentially fail. problem was formulated as...

Build MG-Agent System to reduce

This paper deals with a new concept for calculating DC harmonic voltages and currents of line- commutated HVDC systems. In contrast to the conventional method, this method is useful BTB (Back-To-Back) systems without smoothing reactors or PTP (Point-To-Point) very short transmission line. proposes direction system design analysis. The proposed applied 50 Hz/60 Hz test synchronized system. After simulation verification, results are introduced.

This paper presents electromagnetic force effect of the conductor and insulator in HVDC valve hall. is based on IEC 60865, which applicable to mechanical thermal effects short-circuit currents. The contains procedures for calculation conductors flexible conductors, as well conductors. results are applied Godeok -Dangjin system.