GB/T 32826-2026 Guide for modeling photovoltaic power system English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB/T 32826-2026
Guide for modeling photovoltaic power system
光伏发电系统建模导则
Issue date: 2026-04-30 Implementation date: 2026-10-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms, Definitions and Symbols
4 General Requirements
5 Power Flow Calculation Model
6 Electromechanical Transient Model
7 Electromagnetic Transient Model
Annex A (Informative) Typical Structures of Photovoltaic Power Units and Photovoltaic Power Systems
Annex B (Informative) Typical Structure of a Power Flow Calculation Model for a Photovoltaic Power System
Annex C (Informative) Engineering Application Model for a Photovoltaic Array
Annex D (Informative) Electromechanical Transient Model for a Photovoltaic Inverter with Fault Ride Through Capability
Annex E (Informative) Electromechanical Transient Model for a Photovoltaic Inverter without Fault Ride Through Capability
Annex F (Informative) Electromechanical Transient Model for a Plant Level Power Control System
Annex G (Informative) Structured Model for a Photovoltaic Inverter Control System
Annex H (Normative) Basic Information for the Package Model of a Photovoltaic Inverter Control System
Guide for modelling of photovoltaic power systems
1 Scope
This document specifies the basic technical requirements for modelling photovoltaic power systems for use in power system analysis and calculation, including power flow calculation models, electromechanical transient models and electromagnetic transient models.
This document applies to the construction of simulation models for photovoltaic power systems connected to an AC grid at voltage levels of 380 V and above.
2 Normative References
The following documents are essential for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 19964 Technical requirements for connecting photovoltaic power station to power system
GB/T 29319 Technical requirements for connecting photovoltaic power generation system to distribution network
GB/T 42716 Guide for modelling of electrochemical energy storage power stations
GB/T 44659.2 Short circuit current calculation for new energy stations and connection systems — Part 2: Photovoltaic power generation
3 Terms, Definitions and Symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 19964, GB/T 29319 and the following apply.
3.1.1 photovoltaic generating unit; PV generating unit
The smallest set of equipment that converts solar radiation energy into power frequency AC electrical energy using the photovoltaic effect of photovoltaic cells.
NOTE: Mainly includes a photovoltaic array and a photovoltaic inverter.
3.1.2 photovoltaic power unit; PV power unit
An assembly of equipment formed by one or more photovoltaic generating units of the same capacity and type, directly connected or connected via a step up transformer to a single electrical node.
NOTE: A typical structure is shown in Annex A.
3.1.3 photovoltaic power system; PV power system
A power generation system consisting of one or more photovoltaic power units and necessary primary and secondary equipment, which delivers electrical energy to the grid as a whole.
NOTE: Generally includes photovoltaic power units, collector lines, station step up transformers, reactive power compensation equipment and control and protection systems. A typical structure is shown in Annex A.
3.1.4 fault ride through
The ability of a photovoltaic power system to remain connected to the grid and operate continuously without disconnection when the voltage or frequency at the point of connection changes due to a power system fault or disturbance, within specified voltage and frequency variation ranges and time intervals.
3.1.5 plant level power control system
A system that regulates the power output of each unit within a photovoltaic power system so that the active power, reactive power, voltage at the point of connection and power factor of the photovoltaic power system meet the requirements of the dispatch instructions or pre set values issued by the grid dispatch authority.
3.1.6 PQ node
A type of node in power system power flow calculations where the active power and reactive power injections are specified, and the voltage magnitude and phase angle are to be determined.
3.1.7 PV node
A type of node in power system power flow calculations where the active power injection and voltage magnitude are specified, and the voltage phase angle and reactive power injection are to be determined.
3.1.8 structured model
A simulation model composed of explicit transfer functions, mathematical formulas and logical statements, having a well defined structure.
3.1.9 package model
A simulation model formed by modifying and encapsulating the internal program of a physical controller according to agreed rules and interfaces, which can be called directly by a simulator.
3.2 Symbols
The following symbols apply to this document.
F — Frequency measurement value;
fref — Frequency reference value;
Iabc — Three phase AC current on the grid connected side of the inverter;
Iac — Three phase current phasor on the AC side of the inverter, with Iac being its magnitude;
Iarray — Output current of the photovoltaic array;
Id⁺ — d axis positive sequence current of the inverter;
Id⁻ — d axis negative sequence current of the inverter;
Id_ref⁺ — d axis positive sequence reference current of the inverter;
Id_ref⁻ — d axis negative sequence reference current of the inverter;
Ip — Active component of the AC side current of the inverter;
Ip_cmd — Active current output command of the inverter;
Iq — Reactive component of the AC side current of the inverter;
Iq⁺ — q axis positive sequence current of the inverter;
Iq⁻ — q axis negative sequence current of the inverter;
Iq_cmd — Reactive current output command of the inverter;
Iq_ref⁺ — q axis positive sequence reference current of the inverter;
Iq_ref⁻ — q axis negative sequence reference current of the inverter;
mabc — Modulation signal of the inverter;
md⁺ — d axis positive sequence modulation signal of the inverter;
md⁻ — d axis negative sequence modulation signal of the inverter;
mq⁺ — q axis positive sequence modulation signal of the inverter;
mq⁻ — q axis negative sequence modulation signal of the inverter;
P — Active power output of the inverter;
P₁ — Active power output of photovoltaic power unit 1;
Pₘ — Active power at the maximum power point of the photovoltaic array;
Pₙ — Active power output of photovoltaic power unit n;
Pₛ — Active power output of the energy storage device;
Pord — Active power control command for the inverter;
Pord,₁ — Active power control command for photovoltaic power unit 1;
Pord,ₙ — Active power control command for photovoltaic power unit n;
Pord,ₛ — Active power control command for the energy storage device;
PPOI — Active power at the point of connection;
PPOI_ref — Active power reference value at the point of connection;
PFref — Power factor reference value of the inverter;
PFPOI_ref — Power factor reference value at the point of connection;
Q — Reactive power output of the inverter;
Q₁ — Reactive power output of photovoltaic power unit 1;
Qc — Reactive power output of reactive power compensation equipment;
Qₙ — Reactive power output of photovoltaic power unit n;
Qord — Reactive power control command for the inverter;
Qord,₁ — Reactive power control command for photovoltaic power unit 1;
Qord,c — Reactive power control command for reactive power compensation equipment;
Qord,ₙ — Reactive power control command for photovoltaic power unit n;
Qord,ₛ — Reactive power control command for the energy storage device;
QPOI — Reactive power at the point of connection;
QPOI_ref — Reactive power reference value at the point of connection;
Qₛ — Reactive power output of the energy storage device;
S — Irradiance;
Standard
GB/T 32826-2026 Guide for modeling photovoltaic power system (English)
GB/T 32826-2026 Guide for modeling photovoltaic power system English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB/T 32826-2026
Guide for modeling photovoltaic power system
光伏发电系统建模导则
Issue date: 2026-04-30 Implementation date: 2026-10-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms, Definitions and Symbols
4 General Requirements
5 Power Flow Calculation Model
6 Electromechanical Transient Model
7 Electromagnetic Transient Model
Annex A (Informative) Typical Structures of Photovoltaic Power Units and Photovoltaic Power Systems
Annex B (Informative) Typical Structure of a Power Flow Calculation Model for a Photovoltaic Power System
Annex C (Informative) Engineering Application Model for a Photovoltaic Array
Annex D (Informative) Electromechanical Transient Model for a Photovoltaic Inverter with Fault Ride Through Capability
Annex E (Informative) Electromechanical Transient Model for a Photovoltaic Inverter without Fault Ride Through Capability
Annex F (Informative) Electromechanical Transient Model for a Plant Level Power Control System
Annex G (Informative) Structured Model for a Photovoltaic Inverter Control System
Annex H (Normative) Basic Information for the Package Model of a Photovoltaic Inverter Control System
Guide for modelling of photovoltaic power systems
1 Scope
This document specifies the basic technical requirements for modelling photovoltaic power systems for use in power system analysis and calculation, including power flow calculation models, electromechanical transient models and electromagnetic transient models.
This document applies to the construction of simulation models for photovoltaic power systems connected to an AC grid at voltage levels of 380 V and above.
2 Normative References
The following documents are essential for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 19964 Technical requirements for connecting photovoltaic power station to power system
GB/T 29319 Technical requirements for connecting photovoltaic power generation system to distribution network
GB/T 42716 Guide for modelling of electrochemical energy storage power stations
GB/T 44659.2 Short circuit current calculation for new energy stations and connection systems — Part 2: Photovoltaic power generation
3 Terms, Definitions and Symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 19964, GB/T 29319 and the following apply.
3.1.1 photovoltaic generating unit; PV generating unit
The smallest set of equipment that converts solar radiation energy into power frequency AC electrical energy using the photovoltaic effect of photovoltaic cells.
NOTE: Mainly includes a photovoltaic array and a photovoltaic inverter.
3.1.2 photovoltaic power unit; PV power unit
An assembly of equipment formed by one or more photovoltaic generating units of the same capacity and type, directly connected or connected via a step up transformer to a single electrical node.
NOTE: A typical structure is shown in Annex A.
3.1.3 photovoltaic power system; PV power system
A power generation system consisting of one or more photovoltaic power units and necessary primary and secondary equipment, which delivers electrical energy to the grid as a whole.
NOTE: Generally includes photovoltaic power units, collector lines, station step up transformers, reactive power compensation equipment and control and protection systems. A typical structure is shown in Annex A.
3.1.4 fault ride through
The ability of a photovoltaic power system to remain connected to the grid and operate continuously without disconnection when the voltage or frequency at the point of connection changes due to a power system fault or disturbance, within specified voltage and frequency variation ranges and time intervals.
3.1.5 plant level power control system
A system that regulates the power output of each unit within a photovoltaic power system so that the active power, reactive power, voltage at the point of connection and power factor of the photovoltaic power system meet the requirements of the dispatch instructions or pre set values issued by the grid dispatch authority.
3.1.6 PQ node
A type of node in power system power flow calculations where the active power and reactive power injections are specified, and the voltage magnitude and phase angle are to be determined.
3.1.7 PV node
A type of node in power system power flow calculations where the active power injection and voltage magnitude are specified, and the voltage phase angle and reactive power injection are to be determined.
3.1.8 structured model
A simulation model composed of explicit transfer functions, mathematical formulas and logical statements, having a well defined structure.
3.1.9 package model
A simulation model formed by modifying and encapsulating the internal program of a physical controller according to agreed rules and interfaces, which can be called directly by a simulator.
3.2 Symbols
The following symbols apply to this document.
F — Frequency measurement value;
fref — Frequency reference value;
Iabc — Three phase AC current on the grid connected side of the inverter;
Iac — Three phase current phasor on the AC side of the inverter, with Iac being its magnitude;
Iarray — Output current of the photovoltaic array;
Id⁺ — d axis positive sequence current of the inverter;
Id⁻ — d axis negative sequence current of the inverter;
Id_ref⁺ — d axis positive sequence reference current of the inverter;
Id_ref⁻ — d axis negative sequence reference current of the inverter;
Ip — Active component of the AC side current of the inverter;
Ip_cmd — Active current output command of the inverter;
Iq — Reactive component of the AC side current of the inverter;
Iq⁺ — q axis positive sequence current of the inverter;
Iq⁻ — q axis negative sequence current of the inverter;
Iq_cmd — Reactive current output command of the inverter;
Iq_ref⁺ — q axis positive sequence reference current of the inverter;
Iq_ref⁻ — q axis negative sequence reference current of the inverter;
mabc — Modulation signal of the inverter;
md⁺ — d axis positive sequence modulation signal of the inverter;
md⁻ — d axis negative sequence modulation signal of the inverter;
mq⁺ — q axis positive sequence modulation signal of the inverter;
mq⁻ — q axis negative sequence modulation signal of the inverter;
P — Active power output of the inverter;
P₁ — Active power output of photovoltaic power unit 1;
Pₘ — Active power at the maximum power point of the photovoltaic array;
Pₙ — Active power output of photovoltaic power unit n;
Pₛ — Active power output of the energy storage device;
Pord — Active power control command for the inverter;
Pord,₁ — Active power control command for photovoltaic power unit 1;
Pord,ₙ — Active power control command for photovoltaic power unit n;
Pord,ₛ — Active power control command for the energy storage device;
PPOI — Active power at the point of connection;
PPOI_ref — Active power reference value at the point of connection;
PFref — Power factor reference value of the inverter;
PFPOI_ref — Power factor reference value at the point of connection;
Q — Reactive power output of the inverter;
Q₁ — Reactive power output of photovoltaic power unit 1;
Qc — Reactive power output of reactive power compensation equipment;
Qₙ — Reactive power output of photovoltaic power unit n;
Qord — Reactive power control command for the inverter;
Qord,₁ — Reactive power control command for photovoltaic power unit 1;
Qord,c — Reactive power control command for reactive power compensation equipment;
Qord,ₙ — Reactive power control command for photovoltaic power unit n;
Qord,ₛ — Reactive power control command for the energy storage device;
QPOI — Reactive power at the point of connection;
QPOI_ref — Reactive power reference value at the point of connection;
Qₛ — Reactive power output of the energy storage device;
S — Irradiance;
