This paper presents a high speed current differential implementation approach for smart dc distribution systems capable of sub-millisecond fault detection.The utilizes the natural characteristics measurements to significantly reduce detection times compared standard applications and hence meet requirements converter protection (around 2ms).Analysis is first developed help quantify challenges given system.Options implementing proposed technique are then illustrated.Results scaled hardware...

The characteristic behavior of physically compact, multiterminal dc networks under electrical fault conditions can produce demanding protection requirements. This represents a significant barrier to more widespread adoption power distribution for microgrid applications. Protection schemes have been proposed within literature such based around the use non-unit methods. paper shows however that there are severe limitations effectiveness when employed complex network architectures. Even current...

Power curves constructed from wind speed and active power output measurements provide an established method of analyzing turbine performance. In this paper, it is proposed that operational data turbines are used to estimate bivariate probability distribution functions representing the curve existing so deviations expected behavior can be detected. Owing complex form dependency between speed, which no classical parameterized approximate, application empirical copulas proposed; statistical...

Aspirations of grid independence could be achieved by residential power systems connected only to small highly variable loads if overall demand on the network can accurately anticipated. Absence diversity found networks with larger load cohorts or consistent industrial customers makes such profiles difficult anticipate even a short term basis. Here, existing forecasting techniques are employed alongside enhanced classification/clustering models in proposed methods for bottom up manner. A...

A growing number of designs future unmanned aerial vehicle (UAV) applications utilise DC for the primary power distribution method. Such systems typically employ large numbers electronic converters as interfaces novel loads and generators. The characteristic behaviour these under electrical fault conditions, in particular their natural response, can produce particularly demanding protection requirements. Although a methods multi-terminal networks have been proposed literature, are not...

Anticipating load characteristics on low voltage circuits is an area of increased concern for Distribution Network Operators with uncertainty stemming primarily from the validity domestic profiles. Identifying customer behavior makeup a LV feeder ascertains thermal and constraints imposed network infrastructure; modeling this highly dynamic requires means accommodating noise incurred through variations in lifestyle meteorological conditions. Increased penetration distributed generation may...

Increasing prevalence of dc sources and loads has resulted in distribution being reconsidered at a microgrid level. However, comparison to ac systems, the lack natural zero crossing traditionally meant that protecting systems is inherently more difficult-this protection issue compounded when attempting diagnose isolate fault conditions. One such condition series arc fault, which poses significant issues as their presence negates logic overcurrent philosophies. This paper proposes IntelArc...

Turbine-engine-driven distributed electrical aircraft power systems [also referred to as turboelectric propulsion (TeDP)] are proposed for providing thrust future with superconducting components operating at 77 K, in order performance and emission targets be met. The proposal of such presents a radical change from current state-of-the-art aeroelectrical systems. Central the development architecture design trades which must consider system functionality performance, robustness, fault...

ABSTRACT Power curve measurements provide a conventional and effective means of assessing the performance wind turbine, both commercially technically. Increasingly high penetration in power systems offshore accessibility issues make it even more important to monitor condition turbines based on timely accurate speed measurements. data from Supervisory Control Data Acquisition (SCADA) system records, however, often contain significant measurement deviations, which are commonly produced as...

The United Kingdom (UK) has placed itself on a transition towards low-carbon economy and society, through the imposition of goal reducing its 'greenhouse' gas emissions by 80% 2050. A set three 'Transition Pathways' were developed to examine influence different governance arrangements achieving future. They focus power sector, including potential for increasing use electricity heating transport. These pathways starting from narrative storylines regarding framings, drawing interviews...

The conventional means of assessing the performance a wind turbine is through consideration its power curve which provides relationship between output and measured speed. In this letter, it shown how joint probability distribution speed can be learned from data, rather than examination implied function two variables. Such an approach incorporates measures uncertainty into estimates, allows inter-plant comparison, could used to simulate plant operation via sampling. A preliminary model...

To overcome the challenge transport presents to net zero, Scottish Government has proposed a series of interventions significantly reduce emissions and car kilometres travelled. This paper develops, validates applies system dynamics model road passenger sector interrogate key up 2030: namely, modal shifting sub-10 km journeys active travel, medium-length buses, achieving majority electrification bus fleet, replacing 50 % petrol/diesel cars with electric vehicles. Results indicate government...

Early in 2008, as part of the European funded power optimised aircraft (POA) technology project, Rolls-Royce ran a substantial engine test programme to demonstrate feasibility more electric technologies. This study outlines technologies that were developed replacements for conventional turbofan components, discussing key features electronics, generation and motor drive systems integrated within goes on discuss outcomes from draw conclusions applicability future applications. The main...

The United Kingdom has placed itself on a transition towards low-carbon economy and society, through the imposition of legally-binding goal aimed at reducing its ‘greenhouse gas’ emissions by 80% 2050 against 1990 baseline. A set three low-carbon, socio-technical pathways were developed analysed via an innovative collaboration between engineers, social scientists policy analysts. focus power sector, including potential for increasing use electricity heating transport, within context critical...

Demand electrification, system flexibility and energy demand reduction (EDR) are three central tenets of most decarbonisation pathways in the UK other high-income countries. However, their combined impacts on local systems remain understudied. Here, we investigate impact different future scenarios loading electricity networks, ability electrified to act flexibly (i) mitigating need for network reinforcement (ii) shifting around according variable tariffs reflecting wider needs. These used...

Distribution System Operators (DSOs) and Municipal Authorities across various local energy flexibility trials, are encountering challenges opportunities within their innovation projects. This paper aims to present common share insights gained from a comparative study of trials in the UK, contributing advancement smart systems outlined EU Renewable Energy Communities (RECs) directive.

A predictive load shifting controller has been developed and deployed in a low-carbon house near Glasgow, UK. The features an under floor heating system, fed by air-source heat pump. Based on forecast air temperatures solar radiation levels, the firstly predicts following day’s requirements to achieve thermal comfort; secondly, it runs pump during off peak periods deliver required pre-charging heating. Prior its installation building, controller’s operating characteristics were identified...