Evaluation

Earth measurement (Westnetz grid area – measurement of ground impedance according to the grounding concept)

We offer: services for grounding concepts and their measurement; also measures control for non-compliance (national, international)

Protection testing (Westnetz grid area – monitoring of a protection test for the systems protection in renewable energy generating facilities)

We offer: services related to the supervision of protection tests and measures control in case of faults in the protection concept, e.g. hyper- or hypoactivity

Protection testing (Mitnetz grid area – monitoring of a protection test for the systems protection of a wind power plant)


We offer: services related to the supervision of protection tests and measures control in case of faults in the protection concept, e.g. hyper- or hypoactivity

Protection testing (EAM grid area – protection test on the core-balance transformer)


We offer: services for proper dimensioning of current and voltage transformers depending on their load according to intended purpose

Field measurement 380 kV (enso grid area – recording of the electric field strength / magnetic flux density in the substation)


We offer: services for the assessment of electric field measurement according to the regulation #26 of the German Federal Emission Control Regulations, on Electromagnetic Fields, as well as measures control  for the electrical equipment in case of EMC violations

Field measurement 110 kV (Mitnetz grid area – recording of the electric field strength / magnetic flux density in the wind power substation)


We offer: services for the assessment of electric field measurement according to the regulation #26 of the German Federal Emission Control Regulations, on Electromagnetic Fields, as well as measures control  for the electrical equipment in case of EMC violations

Technical acceptance of the wind power substation 110 kV (Mitnetz grid area – HV circuit breaker’s check with the energy supplier)


We offer: services related to carrying out technical inspections of individual equipment or whole substations with the network operator. Furthermore,  mains connection up to and including 36 kV (Germany only)

Technical acceptance of switchgear 30 kV (Mitnetz grid area – gas-insolated switchgear)


We offer: services for the tendering and planning of switchgear for feeding purposes as well as their evaluation (economic comparisons)

Technical assessments and inspections (wind turbine’s asynchronous generator unit – inspection)


We offer: services for the annual inspection and assessment

Technical acceptance of a transformer 31.5 MVA (SGB – assessment and facility acceptance)


We offer: services related to the monitoring of technical tests and facility assessments along with the equipment manufacturer

Technical acceptance of a transformer 31.5 MVA (SGB – monitoring of the facility tests)

We offer: services related to the monitoring of technical tests, here transformer

Activation of a wind turbine transformer (SGB – monitoring of a wind turbine transformer’s activation)


We offer: services related to the monitoring of technical tests, here transformer

Determination of the performance data for a fuel cell (test execution)


We offer: services related to the planning and designing of various cell types

State analysis (Melbourne – assessment of a transformer after a rollover)


We offer: errors can often be attributed to non-expert connection planning – we offer services in the reliability analysis as well as maintenance measures of various operating resources due to conditional network changes on the basis of expansion of renewable energy sources


New connection planning (Houston – monitoring of the phase assignment)


We offer: services in connection planning and evaluation in other countries, e.g. based on the GridCode NEC, ANSI oder IEEE

 

Grid connection assessment from low to high voltage levels

Your system is connected to the power supply. All done? But what if something unexpected happens, either a fault in the configuration has led to a damage to the system or the equipment has been incorrectly bought/ordered or connected and therefore causes malfunction? We would like to provide answers to what a manufacturer or project engineer may be afraid of – the assessment of his plant or project development according to the individual case. You can also make use of our economically neutral and customer-friendly consulting services for tenders and bids.

We would like to offer you the following services:

Network operation and network quality

  • External and internal voltage and current stresses (types, assessment, calculation bases, control of measures, state of the technology/research) according to the resources and existing problems, dealing in particular with the renewable energy
  • Power quality: flickers, harmonics, resonances, commutation notches, transient quantities, as well as unbalances (causes, calculation bases, metrological detection, control of measures, state of the technology/research)

Protection and control technology

  • Evaluation of protection concepts for different applications, including renewable energy sources (e.g., by selectivity)
  • Advising on the issues occurring when the network protection does not work (causes and measures control)
  • Evaluation of equipment malfunction and its possible causes (mechanical, electrical and operational)
  • Advising on the issues occurring in case the network control does not work according to the specification (PQ test for connectees)

Grid calculation and grid connection requirements

  • Support within the PowerFactory guidelines (possibilities, results evaluation depending on network model for network protection, reliability calculation, power quality, network optimization and error analysis)
  • German certification process by FGW (overview, evaluation relevance, weak points for practice)
  • Disclosure of the calculation bases in the German certification process using the example with PowerFactory (connection assessment)

Switchgear technology 

  • Circuit breakers, disconnectors, earthing switches, load break switches, fuses (tasks, modes, functionality, damage analysis and evaluation of manufacturer’s specifications as required)
  • Switchgear (arc fault protection)

Electric power supply 

  • Assessment of electrical equipment in the normal and fault condition, in particular of the network dynamics (stationary, transient, subtransient)
  • Smart Grid and Micro Grid (what is that and where are the limits)
  • Idle power consumption (evaluation of the voltage ratios, measures control of the limit violations)
  • Network stability and how you can influence it
  • Neutral point treatment (why there is no ideal solution; advantages and disadvantages and assessment of the contributing factors according to the current research state)
  • Evaluation of electrical clearing procedures / calculation bases
  • Storage of electrical energy (e.g., battery design, fuel cells in the network and their calculation)
  • Load and feed-in management (clarification in case of violation of specifications)
  • Correct loss assessment of equipment and in the network (physical causes and measures control for minimization)

High voltage technology

  • Evaluation of the lightning protection concept
  • Insulation coordination
  • High-voltage, direct current transmission (grid calculations for the HVDC networks)

Transformers and transducers

  • Evaluation of transformers and their performance (capacity/size according to the use case)
  • When it makes sense for a controllable local grid transformer?
  • Parallel operation of transformers and the problem with the switching group
  • Step switch (evaluation of its control dynamics)
  • Evaluation of the transducers according to the use case (protection, measurement, counting)
  • Acceptance of transformers/transducers in the test field as well as interpretation of the results

Power electronics

  • FACTS (distinction between control elements, possibilities and evaluation by the use case)
  • Analysis of network effects and measures control
  • Evaluation of the converter layout per application

Electrical machines

  • Assessment in the grid according to the operation and fault cases of different generator concepts (for renewable energy)

Control and regulating technology

  • Evaluation of the EGP controllers (analysis of manufacturer’s content by price/performance)
  • Advising on how network control functions (e.g., in the grid, by a transformer or mechanical/electrical wind turbine)
  • Assessment of PQ tests (analysis) and what possibilities exist if specifications are not adhered to

Information technology

  • Advising on how stable Internet connections can be established or improved in the remote areas
  • Advising on questions about Ethernet vs. EtherCAT (what the real-time capability means for network operation)
  • Advising on interface functions and bus systems (when, what and for what purpose as required)

Measurement technology

  • Evaluation of the measurement concepts for the connection systems
  • Electronic counter vs. Smart Meter (when and which counter is suitable for which use case)
  • Consulting on the issues, when the measured values are erroneous (determination of causes)
  • Consulting on the energy management functioning