The future European energy supply system will have a high share of renewable sources (RES) to meet the greenhouse gas emission policy Commission. Such is characterized by need for strongly interconnected transport grid as well demand storage capacities compensate time fluctuating characteristic most RE generation technologies. With generators at location harvest potential, appropriate dimension and transmission between different regions, cost efficient can be achieved. To find preferred...

Countries around the world are transitioning from conventional power systems dominated by synchronous generators towards low-carbon resources, characterized high levels of converter-interfaced (CIGs). With this transformation, hundreds or even thousands fast electronic devices will be added to grid as CIG penetration increases, thus making system dynamic response progressively faster and more complex. This future scenario poses significant challenges in stability control. To sustain achieve...

Driven1 by decreasing prices for photovoltaic (PV) systems and incentive programs of different governments almost 100 GW PV over wind turbines (WT) have been integrated in the European power system today (2014). In some areas, electricity generation already exceeds demand, pushing existing transport infrastructure to its limits certain hours. order reach Commission's targets 2050, integration will at point require flexibility sources independent conventional keep today's standard security...

The transition from power systems dominated by synchronous machines to based on converter-based generation technologies (CGTs), is weakening currently robust reducing system inertia with the replacement of generators low-inertia CGTs. From a frequency stability viewpoint, this resulting in faster dynamics and more frequent larger excursions after contingencies, thus significantly affecting CGTs, requiring detailed assessments ensure secure integration In paper, practical framework presented...

Renewable generation technologies are rapidly penetrating electrical power systems, which challenge frequency stability, especially in systems with low inertia. To prevent future instabilities, this issue should already be addressed the planning stage of systems. With purpose, paper presents a expansion tool that incorporates set stability constraints along capability renewable and batteries to support system during major imbalances. We study how investment decisions change depending on (i)...

As part of transmission network expansion planning (TNEP), a technical and economical assessment several alternatives must be performed in order to ensure fulfillment the security criteria estimate alternatives' expected operating costs. This task requires performing load flow calculations for different points (OPs) power system. Due high computational burden, considering all possible OPs is simply not possible. consequence, only set representative usually taken into account. Most works TNEP...

Power systems around the globe are undergoing a transformation characterized by massive deployment of converter-interfaced generation (CIG) to effectively combat climate change. However, achieving seamless transition from current power dominated synchronous generators (SGs) future ones with high levels CIG requires overcoming several technical challenges. From frequency stability perspective, reduced system inertia increases nadir after loss thereby endangering stability. In this context,...

Moving towards low-carbon electricity systems through the massive deployment of renewable energy sources (RES) presents a unique opportunity to combat climate change, but it also poses enormous technical challenges, especially from frequency viewpoint. To ensure secure RES integration in terms stability, system operators worldwide have adopted new grid codes requiring provide fast response (FFR). However, if not properly justified, stringent requirements may pose an unnecessary barrier...

Transmission System Operators must regularly perform different stability studies in order to detect hazard situations the system and define proper corrective measures. Due high computational burden required by dynamic simulations, number of study cases be strongly limited only a few cases. Ideally, worst from point view should identified used. However, increased complexity power dynamics under levels variable generation technologies makes it more difficult worst-case scenarios for...

The stability of future power systems will be challenged by high shares converter-based generation technologies (CBGTs). To prevent instability problems, it is essential to explore new and control strategies able counteract the negative effects that CBGTs may have. In this regard, promising are battery energy storage (BESSs), which can provide a wide range benefits from viewpoint. Current methodologies quantify allocate BESSs in electrical networks have been developed an economic perspective...

In transmission system planning, deterministic criteria like the (N-1) security criterion have to be fulfilled for predefined contingencies. The main drawback of is that it only gives information about whether or not, making a comparison between possible candidates power expansion deeper analysis regarding network rather difficult. This paper presents method probabilistic assessment grid based on stress level system, e. g. proximity violating technical restrictions. quantifies using risk...

<title>Abstract</title> The rise of converter interface generation (CIGs) technologies with fast response times has introduced new challenges for the stability electrical power systems. Traditional dynamic security assessment (DSA) methods systems are based on simulations within a time domain. Because high computational efforts and human resources required to carry out these kinds simulations, they performed limited number adverse (critical) operational conditions in terms their stability....

Current Transmission Network Expansion Planning (TNEP) models are usually strongly simplified in order to achieve optimal solutions within reasonable execution times and computational resources. Examples of these simplifications the use reduced network equivalents consideration only a few years planning horizon. Due simplifications, current TNEP do not always meet requirements needed for practical applications. This is particularly true case power systems with increased renewable energies...

The increasing use of variable generation technologies (VGTs) in power systems, such as wind and photovoltaic generation, has introduced new challenges the definition capacity remuneration mechanisms for promoting system reliability. In this context, article we propose a novel framework determining value VGTs to contribute adequacy, well corresponding method allocating payments hydrothermal systems. We show that increases with presence water reservoirs, since help relieving hydropower plants...

W-Band radar transceiver system is applied to the application of detecting obstacles on direct rail path an on-coming train. This paper presents concept, and initial data confirming performance requirement adult 1000 ft away in a highly cluttered environment. work was performed contract for Siemens Transportation Systems, Inc. And Los Angeles County Metropolitan Authority.

Transmission network expansion planning (TNEP) has become increasingly challenging due to the worldwide transformation of power systems, with fast deployment renewable energies as one key drivers. Given current socio-environmental concerns, building new lines integrate energy sources may take several years and a significant risk delays cost overruns. A sound strategy achieve more adapted plan is include option uprating existing among candidates. This paper presents novel model for multi-year...

Several countries around the world are undergoing a radical transformation of their electricity networks, with widespread integration distributed generation based on renewable energy sources at center change. Under these scenarios, DC links becoming an attractive option for infrastructure modern especially medium voltage levels. This work is devoted to systems in existing AC networks by converting power lines DC. The presents novel method three-conductor transmission line efficiency proposed...

Photovoltaic (PV) and wind turbines (WT) will contribute to Europe’s future electricity generation a high degree. Due the intermittent nature of such renewable energy sources (RES), storage is needed balance temporal fluctuations. This work focuses on determination demand within European Power System in dependence PV WT power installation ratio. For this purpose, tool for optimization systems has been developed, which can be used calculate optimal allocation installed capacity RES generators...