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Registration Documents E.1 - E.17
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Some people might be reminded of the famous ‘A38 pass’ from *Asterix & Obelix* by the rather rigid numbering of the registration documents. But unlike the two Gauls, we’re keeping track of things. The documents in Appendix E help us to structure and simplify the coordination process with the grid operators. But why, of all things, do you need forms 1 and 8 to register a generation plant? Today, let’s fill in both e-forms together. This means that unnecessary extra steps in the registration process are now a thing of the past.
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Network Operators Questionaire
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In the network operator questionnaire, the network operator provides us with all the electrical specifications we need to design and commission our PV system in accordance with the guidelines. But why is this questionnaire so important, and why can safe and standards-compliant grid integration only be achieved with this project-specific information? We’ll first look at the formal process and the timeframe set out in the guideline. Then we’ll move on to the technical aspects. Finally, we’ll clear up any uncertainties regarding the so-called agreed connection capacity, the specified protection parameters and the need for network data. Please note: this may raise new questions.
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Network Connection Point Requirements
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The grids are at full capacity, and as a result, grid connection points are few and far between. Consequently, there is great relief amongst all those who have found a suitable point for connecting their project. But what criteria are actually used to determine these points? The VDE-AR-N 4110 application guideline devotes an entire chapter to this, and we have therefore dedicated an entire learning module to it. Together, we’ll step into the role of the grid operator and identify the most suitable grid connection point for a PV system. Later in the project, the generation plant is usually connected to the grid via a transfer station. The guideline also sets out clear structural and electrical requirements for this, which we’ll examine in detail today.
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Grid Behaviour of Power Generating Plant
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Modern generation plants can (and must) make a significant contribution to stabilising the grids. But how exactly? And how do I know whether my plant meets the requirements? As is so often the case, the VDE-AR-N 4110 application guideline provides answers to these questions and defines the required behaviour of power generation plants (PGP) connected to the grid. To ensure we can plan and discuss ‘steady-state voltage maintenance’, ‘dynamic grid support’ and ‘active power output’ on an equal footing, we’ll be looking at these topics in detail today. Incidentally, these points will be checked by the certification body later in the project process. So it’s well worth listening carefully.
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Further Requirements for the Power Generating Unit
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This learning module follows on seamlessly from the previous Brainday session, ‘Grid Behaviour of Power Generating Plants ’. The aim is to gain a better understanding of a further set of electrical engineering requirements for generation plants, so as to ensure their smooth integration into the grid in accordance with the connection rules. To this end, we will look in particular at the specifications for protective devices and their protection settings as defined by the VDE-AR-N 4110 application guideline. The highlight of the day is undoubtedly our 360° tour, during which everyone will finally have the chance to parameterise a protection relay themselves and thus experience the complexity of protection technology first-hand.
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Plant Certificate
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The Duden dictionary defines the term ‘ambivalence’ as a state of conflict or inner turmoil, and could certainly cite the plant certificate as an example. On the one hand, producing the certificate presents a huge challenge. Errors can lead to rescheduling and delays in the commissioning process, with unpleasant consequences. Consequently, the certification requirement is likely to be something of a thorn in the side for most project managers. On the other hand, the plant certificate is the most important component of the project for ensuring the electrical quality of the generation plant and, by extension, the energy supply in general. It therefore ensures that the lights do not go out in the office and, furthermore, promotes a positive image of renewable energy. The aim of today’s training session: to allay fears about the certification body, resolve any internal conflicts and win over new supporters of certification.
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Declaration of Conformity
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Planning a power generation plant in accordance with the guidelines is one thing, but the subsequent implementation of the many details is quite another. That is why, once the project is complete, the certification body meticulously checks the final result – and we assist them in this process. We are fully committed to this, because without a declaration of conformity, the grid operator is entitled to disconnect the plant from the grid. We complete the commissioning declaration and, together, take a spectacular 360° tour of a typical ground-mounted PV installation to produce the final photographic documentation – this ensures that no questions remain unanswered for the certification body and that the PV installation will, hopefully, remain connected to the grid for decades to come.
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