IVR Energieverteilungen GmbH

THE COMPANY

Ensuring a secure Integration of Large-Scale renewable energies in the Medium - and High Voltage Grid

IVR –

an established constructor of substations & electrical system solutions with more than 20 years of experience in dealing with the high requirements for the protection of the power grid in Germany

THE COMPANY

We offer all services from the energy production to the maintenance of the power station.

THE COMPANY

CLIENTS & PARTNERS

Our Clients

Private & institutional investors, farmers, planning groups, energy suppliers, municipalities and districts belong to our clients Examples are:

juwi Group, Green City, Solarpraxis, Solibra, Porsche, Jägermeister, E-ON AG, RWE AG, MVV AG, SWM AG, EnBW, Capitalstage, Deutsche Eco, etc.

THE COMPANY

CLIENTS & PARTNERS

Our Partners

External companies, working in different development regions, technical experts, legal and technical consultants for different services belong to our partners.

P & M Power Consulting, Theta engineering Office, IFE engineering Office, Siemens Austria, etc.

Electro-technical buildings & stations We construct certified for solar, wind & biogas power: • Substations up to 400 kV • Transformer stations • Solar inverter substations • Enterable & compact variants • Made of concrete or aluminum • Electrical components from renowned manufacturers

PROFILE

Plant construction • Turnkey PV & wind systems with optimized properties • We provide adjusted and appropriate solutions and individuell

design during the planning, construction and operation of complex, large scale projects but also

• decentralised energy stations directly at site • Project implementation: know-how from one source • We guarantee quality and effectivness, inexpensive investment

for a longtherm durability of our products • We provide experience, expertise and contacts

PROFILE

Modules and systems • Control engineering, modeling of control structures for grid computing,

monitoring-, protection- & measuring systems

• By constructing more than 1,000 installations of all sizes around the world, we have gained practical experience and constantly expand our skills.

• We exclusively offer specific, detailed and meaningful offers or contracts to our clients.

• We offer long-term investment security with high quality modules and components of the leading manufacturers.

PROFILE

Engineering Services • We offer expertise and advice for the planning, development and

the usage of substations, PV & wind power plants and other applications

• We support complex construction projects through all trades and stages

• In cooperation with our partners, we offer calculations with mathematical methods and models for performance calculation and interpretation of the energy grid.

PROFILE

Planning & Consulting I

• Cableruns location including the documentation • Calculations of short-circuits for DC and AC equipment • Calculations of electricity-carrying capacity • Cable sizing for DC and AC equipment • Working out of drafts for main supply connections (grid) and

electrical networks • Planning of transformation stations up to 400 KV • Air conditioning sizing of AC rectifiers and transforming stations • Technical compression testing of buildings for energy supply • Creation of licence documentation for power supply industry • Devising of protective drafts • Planning, production and implementation of small & medium wind &

solarpower stations

PROFILE

Planning & Consulting II

• Development of concepts for power supply systems including - grid solution - high voltage cable structure and dimension - examination and optimization cable losses and performance - fiber optic solution • Grid short circuit calculation • Grid load flow calculation • Development of concepts for power supply systems including necessary documentation for transfer points up to 36 KV and power stations up to 400 KV • Development of wiring manuals • Creation of technical tenders • Development of concepts for protection and timetables for staggering • Development of concepts for monitoring systems • Development of concepts for green energy solutions

with windmills and solar systems • OFF or ON grid solution

PROFILE

CHALLENGES & SOLUTIONS Starting situation: Effects of the increasing feed-in from regenerative energies on the grid

• Temporary imbalance between fed-in and consumed active power increasing requirements regarding controlling energy (primary and secondary control, minutes reserve, P(f)-behavior)

• Stochastical feeding from regenerative energy sources load- and voltage fluctuations in the supplying power system

• Influence on the systeme voltage and current during network faults • Grid and grid protection is not dimensioned and parameterised for decentral energy generation

Transmission system operators demands on PV & wind power plants

• Management / regimentation of the generated active power • Participation in network control • Support of the network voltage during faults • Delivering of short circuit currents • Dynamic and stationary reactive power delivery

Behavior like a conventional power plant!

CHALLENGES & SOLUTIONS Calculation of the stationary P-Q-behavior - Typical configuration of a Wind Power Plant grid -

Coupling point to the transmission system (220, 380, 400 kV) Transformer

400 / 110 kV110 kV

Transformer 110 / 33 kV

33 kV

110-kV-cable 110-kV-cable 110-kV-cable

...

...... ...

...

G3~

33-kV-cable 33-kV-cable

MS

WGU-Transformer

LV...

WGU coupling points WGU coupling points

WGU coupling points

Transformer 110 / 33 kV

Transformer 110 / 33 kV

33 kV 33 kV

CHALLENGES & SOLUTIONS Calculation of the stationary P-Q-behavior - for example: Reactive power fractions in the WPP-grid -

• Voltage dependent loading power of the cables (Q = U2∗wC) - Example: 110-kV-VPE-cable (1000 mm2): Qc ≈ 1 MVAr / km

• Current dependent reactive power demand of the transformers (QL = 3∗I2 ∗wL) - Example: 380/110-kV-Transformer (Sr = 200 MVA, uk = 16 %) ⇒ QL ≈ 32 MVAr (I = Ir)

• Reactive power from compensation plants QL, QC (if existing)

• Q(P)-diagrams of the WGU‘s:

Projektregionen

IVR international

Transport for example to UK

We are experts in: • Site identification for wind, solar, biogas, industrial & energy grids

• Planning, supplying, assembling and the installing of our products

• On-roof and on-field installation

• Industrial process control, maintenance and repair service of electrical infrastructure in photovoltaic facilities

• Planning and fitting of all infrastructure of DC and AC grids and connections of photovoltaic & wind facilities

• Correct design and realization of power plant projects

CONCLUSIONS

CONTACT

IVR ENERGIEVERTEILUNGEN GMBH Herr Dipl.-Ing. Reinicke Mainaer Str. 2 D-99441 Ottstedt / Magdala

www.ivrenergy.de telefon: ++49 (0) 36 45 4 | 5 06 21

fax: ++49 (0) 3 64 54 | 5 06 73

mobil ++49 (0) 171 7 28 60 13

info@ivrenergy.de