This technical specification highlights recommended technical methods of grid code compliance assessment for grid connection of wind and PV power plants as the basic components of grid connection evaluation. The electrical behaviour of wind and PV power plants in this technical specification includes frequency and voltage range, reactive power capability, control performance including active power based control and reactive power based control, fault ride through capability and power quality.<\/p>\n
Compliance assessment is the process of determining whether the electrical behaviour of wind and PV power plants meets specific technical requirements in grid codes or technical regulations. The assessment methods include compliance testing, compliance simulation and compliance monitoring. The input for compliance assessment includes relevant supporting documents, testing results and validated simulation models, and continuous monitoring data. The scope of this technical specification only covers assessment methods from a technical aspect; processes related to certification are not included.<\/p>\n
This technical specification is applicable to wind and PV power plants connected to the electrical power grid.<\/p>\n
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| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references 3 Terms, definitions, abbreviations and subscripts 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3.2 Abbreviations and subscripts 3.2.1 Abbreviations <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 3.2.2 Subscripts 4 Symbols and units <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5 General specifications 5.1 General 5.2 Type tested units \u2013 Wind turbines and PV inverters 5.3 Projects \u2013 Wind and PV power plants 5.4 Compliance assessment methods <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 6 Operating area 6.1 General 6.2 Frequency range 6.2.1 Documentation 6.2.2 Method 1: Monitoring Tables Table 1 \u2013 Overview of assessment methods <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 6.3 Voltage range 6.3.1 Documentation 6.3.2 Method 1: Simulation 6.3.3 Method 2: Monitoring 6.4 Reactive power capability 6.4.1 Documentation 6.4.2 Method 1: Simulation <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 6.4.3 Method 2: Monitoring 7 Control performance 7.1 General 7.2 Active power based control 7.2.1 Documentation Figures Figure 1 \u2013 An example of PQ diagram <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 7.2.2 Method 1: Plant field testing <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Figure 2 \u2013 Example of figure for active power ramp rate test Figure 3 \u2013 Example of figure for set point test of active power <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Figure 4 \u2013 Example of figure for frequency control test Table 2 \u2013 Example table for maximum variation value of active power <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 7.2.3 Method 2: Monitoring 7.2.4 Method 3: CHIL testing Table 3 \u2013 Example of table for performance index of set point test Table 4 \u2013 Example of table for performance index of frequency control response <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Figure 5 \u2013 Example of figure for frequency control test with simulated frequency variation <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 7.3 Reactive power based control 7.3.1 Documentation Table 5 \u2013 Example of table for functionality test of frequency control Table 6 \u2013 Example of table for coordination functionalityof active power set point and frequency control <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 7.3.2 Method 1: Plant field testing <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Figure 6 \u2013 Example figure for set point control of reactive poweras control reference (reactive power control mode) <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Figure 7 \u2013 Example of figure for set point control of voltageas control reference (voltage control mode) Table 7 \u2013 Example of table for reactive power control testing <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 7.3.3 Method 2: Monitoring 7.3.4 Method 3: CHIL testing Figure 8 \u2013 Example of figure for voltage control test Table 8 \u2013 Example of table for voltage control testing <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 8 Fault ride through 8.1 General 8.2 Documentation Table 9 \u2013 Example of table for voltage control test <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 8.3 Method 1: Simulation Figure 9 \u2013 Layout of grid with symmetrical fault Figure 10 \u2013 Layout of grid with unsymmetrical fault <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Table 10 \u2013 Recommended scenario of pre-fault operation modes Table 11 \u2013 Recommended scenario of grid fault types and under\/over voltage levels <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 8.4 Method 2: Monitoring Figure 11 \u2013 Example of active power recovery Table 12 \u2013 Example table for fault ride through simulation results <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 9 Power quality 9.1 General 9.2 Current harmonics and inter-harmonics 9.2.1 Documentation 9.2.2 Method 1: Plant Field testing <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 9.3 Flicker 9.3.1 Documentation 9.3.2 Method 1: Plant field testing Figure 12 \u2013 Equivalent circuit of the grid and the power plant <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Annex A (informative)Monitoring of electrical performance of wind and PV power plants A.1 Overview A.2 Responsibilities A.3 Basic principles A.4 Monitoring signals <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | A.5 Monitoring hardware Table A.1 \u2013 Monitoring signals <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Annex B (informative)Controller hardware in the loop (CHIL) testing setup B.1 General B.2 Power plant modelling B.3 Set-up <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Figure B.1 \u2013 Test bench diagram Table B.1 \u2013 CHIL system boundaries Table B.2 \u2013 Signal list <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Annex C (informative)Harmonic simulation for wind and PV power plants C.1 General Figure C.1 \u2013 Ideal harmonic current source illustrationfor harmonic distortion calculation <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | C.2 General simulation methods Figure C.2 \u2013 Converter harmonic model as a Norton\/Thevenin equivalent circuit Figure C.3 \u2013 Norton equivalent harmonic current source illustrationfor network harmonic distortion calculation <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Figure C.4 \u2013 Power electronics average model Norton equivalent circuit representation <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Annex D (informative)Control performance index Figure D.1 \u2013 Performance index of active and reactive power based control <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Grid code compliance assessment methods for grid connection of wind and PV power plants<\/b><\/p>\n |