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Product Inspections, Certification & Training
Product Certification & Inspection Services
The growing demand for electricity requires utilities to have solid transmission and distribution networks, both to ensure reliability and to reduce operation costs. Utilities need to be sure that their electrical equipment is robust and  reliable . Kema Labs 1  benefits from synergies between its laboratory testing and onsite inspections, as well as a wider […]
Products Expertise
Battery Storage systems
As sustainable energy becomes more widespread, energy storage solutions are becoming essential to balance electricity supply and demand. Whether you are seeking to bring new products to market or consolidating a developed technology, the right partner is crucial . Our energy storage experts offer non-destructive (pre-) testing of batteries in dedicated facilities, as well as:
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HV tests for on-site cable diagnostic
Energy utilities need on-site AC high-voltage acceptance tests on their cable systems and switchgear, in order to ensure the quality of their transmission systems; such tests need to be performed on site with special equipment as well as remarkable measurement technology and diagnosis at voltages of up to 500 kV. Complete acceptance tests such as […]
Ispezione di prodotto, certificazione e formazione
Certificazione di prodotto e servizi di ispezione
La crescente domanda di energia elettrica richiede alle utility di disporre di solide reti di trasmissione e distribuzione, sia per garantirne l’affidabilità che per ridurne i costi operativi. Le utility devono quindi accertarsi che le loro apparecchiature elettriche siano robuste e affidabili. Kema Labs 1  offre servizi di valutazione della conformità ben supportati dalle sinergie […]
Technical papers
New trends of the electrical market: challenges and opportunities for HV Cables
​In a changing electrical market, driven by renewable energies, the target is to get wind or solar energy to the consumption centers . Nowadays Transmission System Operators (TSO) are worldwide searching for innovative solutions in developing the transmission grid and, as a result, it is likely that the application of extra high voltage AC and […]
Technical papers
Safety issues in case of internal arc on HV cable terminations, bushings
Worldwide demand for new T&D networks will increase in the near future pushing the utilities to install a larger number of high voltage equipment like cable terminations, bushings and surge arresters. Meanwhile the attention to environmental and safety issues is generally increasing . The aim of this paper is to analyze the potential risks associated […]
Technical papers
Safety aspects of MV and HV underground cables and accessories in urban areas
The booming of renewable power stations (solar and wind mill mainly), the increase use of Interconnectors and submarine cables, the construction of urban substations in big cities with intense population and the need to avoid the use the overhead lines (right of way and so on), are the main factors leading to the increasing amount […]
Technical papers
Field measurements and frequency domain modeling of a 400 kV underground cable line
The length of XLPE-insulated underground cable lines in the European HV / EHV network is experiencing a fast growth due to the increasing number of submarine interconnections and suitability to be installed also in urban area with nil visual impact after installation. Use of cable stretches in combination with overhead lines has proven to be […]
Technical papers
Ferroresonance in Inductive Voltage Transformers Or Power Voltage Transformers: analysis, laboratory tests and solutions
A ferroresonance analysis related to HV Inductive Voltage Transformers (IVT) and power Voltage Transformers or Station Service Transformers (PVT/SST) was addressed to develop models based on EMT formulation, enabling detailed ferroresonance risk analyses in specific HV station conditions and helping in the equipment technical specifications (including anti-ferroresonance remedial provisions). The research relied on a comparison […]
Technical papers
PD optical fibre
Progress in optical PD detection for translucent and transparent HV cable accessories with improved fluorescent optical fibresIn a previous paper we introduced sensitive and interference-immune optical PD measurements on HV cable accessories and presented first results. Since then, our investigations tried to cover all important aspects that lead to further improved sensitivity for optical PD […]
Technical papers
Issues related to spark discharges
In the general public environment, ambient power-frequency electric fields are relatively small, except when near high-voltage (HV) transmission lines. Electric fields from aerial HV transmission lines are greatest directly under the conductors and decrease with. In occupational environments, elevated electric fields also exist in HV substations/switchyards, and in particular under busbars/equipment. Other sources of power-frequency […]
News
CESI at first Cable Middle East 2015 – Abu Dhabi (UAE)
​1st Advanced cable Middle East 2015 conference brought together over 110 senior representatives from leading companies and organizations Internationally and regionally. Delegates took part in detailed debates investigating the challenges and opportunities that lie ahead for the Middle East market. The conference proved to be an excellent forum for discussion and knowledge sharing as well […]
Civil Engineering
Feasibility studies
ISMES has a wide range of expertise in feasibility studies in all branches of Civil Engineering: ISMES carries out feasibility studies for civil infrastructure (such as roads, highways, railways, etc.) as well as for Power infrastructures (HydroPower Dams, RES power plants, Power interconnections, HV Substations..). These studies define the main aspects of civil engineering works […]
Products Expertise
Cables and Accessories
The increasing global demand for electricity in both industrialized and emerging markets is driving demand for cables systems. We carry out type tests to verify the design of LV, MV and HV cables and their accessories. Type testing allows you to prove that your cables and cable accessories meet the highest quality standards to deliver […]
News
Jicable’15
​ CESI Group will be present with four papers at Jicable Conference in Versailles, France from 21st to 25th June. Jicable is the main forum where you can meet with the major experts in AC and DC insulated power cables and their accessories, from low voltage and special cables up to ultra-high voltage cables as […]
Technical papers
Transparent Fluorescent Silicones
Characterization of Transparent Fluorescent Silicones for Optical Monitoring of High-Voltage Cable AccessoriesThe mechanical and electrical properties of new transparent silicone materials modified with two fluorescent dyes were investigated by measuring stress-strain behaviour, electrical breakdown strength, capacity and dissipation factor, before and after thermal ageing, as well as electrical and optical partial discharges. Mechanical properties of […]
Testing Labs
High Current Test Laboratories
Kema Labs variable frequency ultra-high current test laboratories can test any equipment that requires either a high current test or a special test frequency (or a combination of both). Tests can be done in triple phase or single phase. Our variable frequency and ultra-high AC current test laboratories can test at any desired test frequency […]
Testing Inspection and Certification
On Site Testing
Whenever you install a new or refurbished component, it is essential to verify that it works properly before you put the component or substation into service. Even the smallest failure could cause a full-scale short circuit – with potentially disastrous consequences. Kema Labs offers onsite commissioning testing of components such as transformers, generators and high-voltage […]
News
CESI’ MODEL ON ENERGY STORAGE
CESI has published a new paper in which describes a Mixed Integer Linear-constrained Programming (MILP) model to simulate battery energy storage systems behavior within the Italian ancillary services market. The main purpose of the tool is to investigate the economic viability of storage technologies in the provision of network services. Comparing the proposed model to the […]
Technical papers
Experience of HVDC Interconnection Italy-France called “Piemonte-Savoie” Problems connected with EMF – ELF Study of interferences with other services in tunnel
This paper presents the main results of the studies carried out for the project of High voltage Direct Current (HVDC) Interconnection between Italy and France, called “Piemonte-Savoie” about electromagnetic interferences with other services. The project has been jointly performed by TERNA and RTE and the studies have been made with the support of the Italian […]