The impact of increased decentralised generation on the reliability of an existing electricity network

Veldhuis, A.J.; Leach, Matthew; Yang, Aidong

doi:10.1016/j.apenergy.2018.02.009

Cited by 47 publications

(19 citation statements)

References 40 publications

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“…A DR strategy can be designed for different purposes, such as peak shaving, valley filling, energy conservation, etc [14]. Due to its importance on improving the electricity grid reliability [28] and on reducing the generation capacity, a peak shaving strategy (PSS) was chosen for the proposed method (Figure 1). During the PSS the thermostatically controlled loads are managed to reduce the demand during peak periods [24] by means of a rule-based control (RBC), which varies the comfort temperature set-points [29].…”

Section: Demand Responsementioning

confidence: 99%

Energy flexible buildings: A methodology for rating the flexibility performance of buildings with electric heating and cooling systems

2019

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In the present energy scenario, buildings are playing more and more as energy prosumers. They can use and produce energy and also actively manage their energy demand. The energy flexibility quantifies their potential to adjust the energy demand on the basis of external requests. The objective of this paper is to propose a method for buildings energy flexibility labelling at design conditions in the same fashion as the energy performance label. The flexibility quantification is based on the calculation of four flexibility parameters, which contribute to the definition of the Flexibility Performance Indicator. In order to assess the Flexibility Performance Indicator, buildings dynamic simulations are necessary and the boundary conditions (i.e. demand response event, representative day, comfort constraints) to be considered during the evaluation are provided as part of the proposed methodology. The method was applied to different Italian buildings, which differ for geographic location and design specifications and, in particular, the effects of building structure, heating/cooling systems and energy storage systems were compared. Results show that the climatic conditions affect the flexibility performance, while the building feature more relevant is the thermal mass of the building envelope, more than that provided by the distribution system. A sensitivity analysis to evaluate how the results are influenced by the proposed boundary conditions was also performed. Their choice confirms to have a relevant impact on flexibility quantification, then their unique definition has a paramount importance within this methodology.

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Section: Demand Responsementioning

confidence: 99%

Energy flexible buildings: A methodology for rating the flexibility performance of buildings with electric heating and cooling systems

2019

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“…In the proposed model, BESS is also assumed to be deployed by third-party in stage 1 and then participates in retail energy markets of community microgrids under FP contract subjected to SOC availability. The cost of power purchase from BESS is defined as C bess (t) = p bess (t) × e bess (17) The optimal dispatch of BESS, p bess (t) is optimized between available charging, p ch bess (t) and discharging, p disch bess (t) limits at time t, as suggested by [92] and, expressed in (18) and (19) respectively.…”

Section: Stage-2: Proposed Optimal Energy Management Of Community Micmentioning

confidence: 99%

“…The DGs are optimally deployed by investigating multiple possible scenarios of the system and energy resources. On the other hand, the optimal integration of DERs minimizes power/energy loss [16], emission [17], node voltage deviation [15], cost of network up-gradation, investment and various operating costs while improving reliability [18] and stability [16] of distribution systems. Despite of these benefits, the growth of active distribution systems is limited by certain factors.…”

Section: Introductionmentioning

confidence: 99%

Optimisation framework for the design and operation of open-market urban and remote community microgrids

2019

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In this article, a new business model considering multiple stakeholders is proposed to develop a framework for third-party investment and future flexible retail electricity market in community microgrids. The proposed two-stage optimisation platform generates opportunities for multiple stakeholders to invest in the design of community microgrids, comprising multiple and different distributed energy resources such as renewable generation units, battery energy storage systems, and micro diesel engines, to minimize daily operational costs of the system. To proliferate the prosumers in retail energy markets as per the Office of Gas and Electricity Markets, United Kingdom, a peer-to-peer energy trading and energy management scheme is also proposed. The optimal sizing of urban and remote community microgrids are determined in stage-1, followed by their optimal operations to minimise the daily operating cost of the community system in stage-2. An improved version of the genetic algorithm is employed to optimise decision variables in both the stages. Different cases are investigated which show the tremendous potential of revenue generation for all stakeholders while effectively optimizing techno-economic operations of microgrids.

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“…On the other hand a number of reasons such as: the obligation to reduce the emission of greenhouse gases, the diminution of fossil fuels, the issue of energy independence and sustainable development, have pushed to consider the energy problem not only from the economic point of view, but also from an ecological [3,4]. This has encouraged many countries to develop their energy systems based on renewable energies [5].…”

Section: Introductionmentioning

confidence: 99%

Impacts of photovoltaic power source intermittence on a distribution network

Garfi¹,

Aloui²,

Chaker³

2019

IJECE

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<span lang="EN-US">The integration of the photovoltaic (PV) solar systems into distribution networks has brought new challenges to the network planners. One of the most interesting is to prevent the impacts of the PV intermittent character on the steady state system operation conditions. This work is aimed to investigate such effect on voltage performance, conventional generator daily behavior and automatic voltage regulator operation. Simulations were conducted on a 33-bus IEEE radial distribution power system. In order to provide a reliable study, a real PV power profile was considered. Obtained results over a period of 24 hours revealed that the PV integration contributes to an enhancement of the overall voltage profile, a considerable saving in the total amount of the produced active power and a reduction of power losses. However, the PV intermittent character causes significant transformation in buses voltages daily profiles as well as changes in production plan. To sum up, this paper reports the alterations, caused by the PV source intermittence, which must be taken into consideration by the distribution networks planners to maintain the overall network parameters within safe operating condition</span>

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The impact of increased decentralised generation on the reliability of an existing electricity network

Cited by 47 publications

References 40 publications

Energy flexible buildings: A methodology for rating the flexibility performance of buildings with electric heating and cooling systems

Energy flexible buildings: A methodology for rating the flexibility performance of buildings with electric heating and cooling systems

Optimisation framework for the design and operation of open-market urban and remote community microgrids

Impacts of photovoltaic power source intermittence on a distribution network

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