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Grid code compliance (GCC) verification services
Grid code compliance (GCC) verification services
Item no. 557.220 – 557.224
Securing plant control characteristics for reliable grid code compliance.
Description
Compliance with grid connection requirements is crucial for a stable grid supply. In many countries, the measurement of the plant controller is also a prerequisite for project certification and is therefore decisive for the successful implementation of solar power plants.
The type and scope of the so-called Site Acceptance Tests (SAT) differ from market to market and often depend on the plant size (installed capacity) and voltage level. With the Grid Code Compliance (GCC) Engineering Services we offer customized services for the verification of power plant control from standardized functional tests to project-specific compliance test procedures and compliance test reports. Market-specific and contractual agreements between grid operator and connected party (owner) can be taken into account on a project-specific basis.
Overview
In principle, the verification can be either standardized or project-specific. If the grid operator defines specific requirements for compliance tests, the verification must be carried out project-specific in accordance with the specified framework conditions.
Assessment | Documentation | ||||
|---|---|---|---|---|---|
Qualitative | Quantitative | Standard | Project-specific | Raw data (.txt) | |
Functional test | |||||
557.220 Standard test protocol |
| – |
| – | – |
Standard verification | |||||
557.221 Standard test procedure, system-related | – | – |
| – | – |
557.222 Standard test report, system-related | – |
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| – |
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Project-specific verification | |||||
557.223 Compliance test procedure, project-specific | – | – | – |
| – |
557.224 Compliance test report, project-specific | – |
| – |
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Additional notes
Qualitative assessment: Testing whether setpoints can generally be reached and maintained.
Quantitative assessment: Determination of control characteristics such as steady-state error, rise time, settling time and overshoot (only project-specific if required).
Standard: Test protocol/test procedure according to meteocontrol’s own standard in reliance to Network code (NC) requirements for generators (RfG)/EU regulation 2016/631.
Project-specific: Test procedure according to country- and/or project-specific requirements.
Setpoint command method: Only the setpoint command methods required by the grid operator are tested.
Measurement raw data: Provision of measurement raw data with an interval of 200 ms in format .txt
Revisions: Revisions are charged on the basis of hourly rates.
Site acceptance tests (SAT)
Testing according to drafted test procedure (standard/project-specific) is not included in the scope of delivery, but can be offered on an hourly rate basis.
Active power |
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Reactive power |
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Behavior in the events of technical faults |
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Standard verification (557.221, 557.222)
Setpoint steps | Step size | Control range 1) | |
|---|---|---|---|
Active power decrease at overfrequency (LFSM-O) | 8 | not fixed | 50.0 … 51.5 Hz |
Active power controllability | 10 | 10 % P/Pmax | 0 … 100 % P/Pmax |
Voltage control Q (V droop) | 16 | 0.01 V/Vc | 0.95 … 1.05 V/Vc |
Reactive power control Qvar | 18 | 5 % Q/Pmax | -30 … 30 % Q/Pmax |
Power factor control cos ϕvar | 15 | 0.01 | -0.95 … 0.95 |
Characteristic curve Q (P) | 10 | 10 % P/Pmax | -33 … 0 % Q/Pmax |
Characteristic curve Q (V) | 18 | 0.01 V/Vc | -33 … 33 % Q/Pmax |
1) Negative reactive power values (Q/cos ϕ) correspond to a reactive power absorption from the grid (underexcited operating mode, voltage decreasing), positive reactive power values (Q/cos ϕ) correspond to a reactive power injection into the grid (overexcited operating mode, voltage increasing).