ENGINEERING


The excellent blend of knowledge and experience that we have allows us to execute various projects with creativity and confidence.


energy

Energy

We have experience in everything related to electrical energy – generation, transmission, distribution and utilization of electric power.
We work jointly with High-voltage Laboratory of Technical University of Sofia, which is a convenient place for design of complex solutions and tests of completed products in the field of electrical power distribution. The laboratory gear includes an auto-transformer 40kVA, an AC testing transformer 700kV / 0,5A, light impulse voltage generator 750kV and measuring equipment up to 750 kilovolts.

We design electrical installations and products such as:

  • Automated cable testers
  • Smart grid systems
  • Energy management systems
  • Battery reserved systems
  • PV power plants
  • PV electric vehicle charging stations
  • Industrial and residential electrical installations
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Design & Solutions

By using the capacity of the laboratory, our electrical engineers could help you design your electrical installations and products from an early concept stage, through actual design and manufacturing. We have experience in:

PV power plants design

We are firm believers that the energy generated by the sun will be the major source of energy in a few decades and we have channeled great part of our efforts in this direction. We have experience in the design of various PV stations, including also vehicle battery charging stations powered by PV modules and battery reserved power stations.

Will could be of help in the PV station design, yield calculations, evaluation and purchase of the solar panels, the inverters and other necessary modules. We could also prepare documentation related with the project. Furthermore, we could design the PV station’s control and measurement systems, which enables the on-line monitoring of the performance of the station.

Smart grids

The increasing complexity of the electricity grid and the current IT capabilities have led to the development of the so-called smart grids. We have significant expertise in the two major engineering fields that make smart grids possible - energy and automation. In terms of energy we run a High Voltage laboratory where we could make various tests and we could design numerous electricity networks and installations. In terms of automation, we have experience in constructing SCADA systems for supervising and data acquisition in energy management. We have both components that make smart grids and we are looking for partners to harness the engineering capabilities and assets that we have in this area.

Electrical installations design

We offer design of production line electrical installation and residential and other special locations electrical installations. We apply the European Standards (EN) that have been ratified by one of the 3 European Standards Organizations - CEN, CENELEC or ETSI.

Substation electrical design

Having worked in smaller, independent manufacturers or in the production of complete solutions, our engineers have been able to develop well-rounded experience that helps them see better the bigger picture. They have been responsible not only for the ideation, design and engineering of the products, but also had the task for sourcing of necessary parts and materials and have supervised the actual manufacturing process and subsequent tests, which in the end gave them significant insights of what could be improved in the design phase. The complexity of this task has made our learning curve steeper, while getting our hands dirty has added new perspectives on the engineering process and has improved our creativity.


Testing

We have experience in performing tests of the electrical insulations, electromagnetic compatibility, electric safety, electro-technical materials and high-voltage installations. Furthermore, we have developed an intelligent and innovative diagnostic methodology for condition assessment of power transformers, generators and MV and HV cables. We are able to point out the reasons for eventual problems in the electrical insulation as well as to establish the quantitative and qualitative aging indicators.

Assessment of the Electrical Insulation through Partial Discharges

Sustainability is also related to the timely and proper maintenance of the assets participating in the generation and distribution of electricity. The electrical insulation of the electrical equipment ages under the combined effect of temperature, pressure, vibration, and other environmental factors. The assessment of the remaining lifetime of the electrical insulation is needed for asset management and reliability planning repairs of the electrical equipment.

We have developed a methodology for assessment of the insulation by using a partial discharge methodology far more advanced than the current standards (IEEE Standard 1434-2000., IEC 60270:2000). In those standards are described calibration methods and how to evaluate results, but there is no specific mentioning of thresholds. Through research and experience we have developed a methodology that allow us to be far more specific. We know where the problem in the insulation is located, we know its size and severity, and we could point out the source of the problem and its force and could forecast with very good accuracy when and where a breakthrough of the insulation will happen.

This innovative methodology has huge cost-saving potential and could also be done remotely once the measuring tools are installed on-site.

Tests Performed

  • Standard high voltage testing
  • Testing and evaluation of porcelain, glass and composite insulators (dry and wet, withstand and flashover)
  • Testing of bushings
  • Testing of switchgear, disconnecting switches and circuit breakers
  • Testing and commissioning of power cables and accessories
  • Testing of power transformers (partial discharge and impulse tests)
  • Testing of SF6 insulated equipment
  • Testing and evaluation of instrument transformers
  • Radio interference voltage (RIV) testing of equipment
  • Partial discharge testing of equipment
  • Evaluation and analysis of transformer condition and faults
  • EMF calculation, analysis and consultation
  • EMF measurement
  • Field testing: substation equipment
  • Transient measurement for transmission and distribution system
  • Correspondence to standards
  • 50 Hz dry & wet voltage flashover test
  • Lightning impulse voltage withstand and flashover test
  • Corona test (electrical and visible image detection)
  • Tan delta measurement (24kV; 0,1Hz)
  • Insulation watts loss test

Laboratory

    High Voltage Lab Testing Services

  • Maximum impulse voltage: 750 kV
  • Maximum 50 Hz voltage: 700 kV
  • Test Facilities

  • Indoor HV lab dimensions: 17 m (l) x 10 m (w) x 11m (h)
  • AC Test Equipment

  • Test transformer: 50Hz, 700 kV, 0.5 A Cont.
  • Capacitive voltage divider: 700 kV
  • Resistive voltage divider: 750 kV
  • Digital oscilloscope
  • Radio interference voltage (RIV) meter
  • Impulse Voltage Test Equipment

  • Impulse generator: 750 kV, 1,2 kJ
  • Capacitive voltage divider: 750 kV
  • Resistive voltage divider: 750 kV
  • High-resolution digital recording system
  • Digital oscilloscope
  • Storage analogue oscilloscope
  • DC Voltage Test Equipment

  • DC generator: 125 kV, 100 mA
  • Resistive voltage divider: 750 kV

mechanical

Mechanics

We design physical or mechanical systems, such as power and energy systems, kinematic chains, transmissions, powertrains, hydraulic systems and metal structures.
We have worked on the creation and manufacturing of complete solutions and products. Therefore, we have been responsible not only for the ideation, design and engineering of the products, but also had the task for sourcing of necessary parts and materials and have supervised the actual manufacturing process and subsequent tests. Those numerous iterations gave us significant insights of what could be improved in the design phase.

We deliver the following:

  • 3D CAD MODELS
  • 2D Drawings with general dimensions and tolerances
  • 2D Drawings of the fully assembled product with bill of materials and all the information
  • FEA design simulation
  • Panels layout
  • General arrangement drawings
  • Photorealistic renderings
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Ideation, Design & Documentation

In the ideation stage our mechanical engineers can help you generate, explore, and refine design concepts, which includes 2D and 3D drawings and prototyping and help in the corresponding calculations and construction analysis. Furthermore, they will help you compile the necessary design documentation which includes writing the user, operation and service manuals.

Any business faces difficulties in balancing its capacity with its workload. There are always periods in which there is less work and periods in which there is too much work. While the first situation worsens your cost to income ratio, the second situation may cause delayed projects or even loss of business opportunities. Well known solution to those problems is to subcontract part of the work to an engineering firm such as ours. You can use us whenever you need extra hand to help you push forward delayed or postponed projects, which meanwhile will allow your team to focus its efforts on the core engineering problems. The flexibility that you will gain through us will have a positive effect on your business.


Manufacturing stewardship

In the manufacturing stewardship service our engineers are often with a project from start to finish. They are responsible for maintaining a product’s design intent during implementation, and work as the stewards of the design. As part of this stewardship, they can help in organizing the manufacturing process by selection and order of materials and components, evaluation and communication with manufacturing vendors.

Furthermore, we offer search and evaluation of manufacturing vendors in Bulgaria, which includes analysis of the manufacturing assets and capabilities and analysis of the financial health of the vendor.


Automation

Automation

We design, create, develop and manage control and supervision systems by combining information flows, hardware configurations and software solutions.

Efficiency, flexibility and productivity are decisive success factors for the industry and engineering plays a central role in the automation process as it relates to ever more complex machinery and plants. We can help your engineers reach the full potential of your automation systems by reviewing, redesigning and optimizing the electrical schematics, software and mechanical blocks. We can also design an entirely new automatic system according to your requirements.

We deliver the following:

  • Object research, functions definitions and area of the control system
  • Control system layout
  • Development of different hardware configurations, software solutions and control possibilities
  • High performance HMI
  • Design and construction of automation control systems
  • System configuration and parameters definition
  • Process flow sheets
  • Simulations
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Automation Design

Engineering plays a central role in the automation process especially as it relates to ever more complex machinery and plants. For that reason, a high level of efficiency is already demanded at the engineering stage, as the first step toward better production: faster, more flexible, and more intelligent.

We can help your engineers reach the full potential of your automation systems by reviewing, redesigning and optimizing the electrical schematics, software and mechanical blocks. Furthermore, we can design an entirely new automatic system according to your requirements.


Setting up

The implementation of high-end computing equipment and more powerful automatic components is one of the main initiators of industrial progress. Advanced technologies result in better quality, productivity and competitiveness. We can assist you in every stage of the introduction of new technologies - from the initial research up until installation and integration.


Human Machine Interface

(HMI) deals with the interaction between an operator and input devices such as touch screen panels, buttons and switches. We can design a HMI that conforms to the requirements for efficiency and user-friendly operation.


Supervisory Control and Data Acquisition

(SCADA) is used for controlling and monitoring of ongoing processes. The basic design of SCADA systems includes: a PC as an operator station, a database collecting data for future analysis and a graphical user interface (GUI) that facilitates the human-machine interaction. Our team is experienced in building a SCADA system in compliance with both the latest industrial standards and the customer’s own needs.


Programmable Logical Controller

(PLC) software can be found in industrial or building automation controllers responsible for the automation of electromechanical processes. Our engineers can create PLC software in accordance with IEC61131 standard: ladder logic, structured text, function block diagram and sequential function chart.


Electronics

Electronics

We design devices that process digital information and signals, such as circuit boards, programmable logic controllers, embedded systems and sensors.

Digital information processing and signal processing are often core elements in our projects and our ability to design our own electrical circuits extends the range of project that we can undertake and increases significantly our flexibility.

We deliver the following:

  • Printed Circuit Boards (PCB)
  • Analogue electronics
  • Digital electronics
  • Mixed signals electronics
  • Circuit design
  • PCB layout and routing
  • 3D rendering of PCB
  • Simulations
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Software

Software

Our software engineering supports the perfect fit between the hardware and the software in the products and systems that we create.

We are focused in the development of software that is directly linked to the hardware and the systems that we engineer and manufacture. For certain projects we could reinforce our capacity with outside vendors.

We work mainly with the following types of software:

  • Human Machine Interface (HMI) - the interaction between an operator and input devices such as touch screen panels, buttons and switches
  • Supervisory Control and Data Acquisition (SCADA) is used for controlling and monitoring of ongoing processes.
  • Programmable Logical Controller (PLC) software can be found in industrial or building automation controllers responsible for the automation of electromechanical processes.
  • We see the future automation in Linux, Apache, PHP, MySQL (LAMP).
  • For Microcontroller Embedded Software Development we use mainly ANSI C and C++
  • Data analysis
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Design

Design

Good design is not just what looks good – it is also functionality, sturdiness and simplicity of use.

We are inspired by the simple and functional design of Dieter Rams and we try to execute and implement his guiding principles on what good design should be:
  • Innovative
  • Useful
  • Aesthetic
  • Understandable
  • Unobtrusive
  • Honest
  • Long-lasting
  • Detailed focused
  • Environmentally friendly
  • Have as little design as possible
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Last update: 25.03.2016 | Copyright © Siviko