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GB/T 40103-2021 English PDF (GBT40103-2021)

GB/T 40103-2021 English PDF (GBT40103-2021)

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GB/T 40103-2021: Technical requirement of connecting to power system for solar thermal power station

This Standard specifies the terms and definitions, and the technical requirements for power generation capacity prediction, start-up and shutdown, active power control, reactive / voltage regulation, abnormal operating conditions, secondary systems, simulation models and parameters, and grid-involved tests of connecting to power system for solar thermal power station. This Standard is applicable to the thermal energy storage type of solar thermal power stations that adopt steam turbine generator set.
GB/T 40103-2021
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 27.160
F 12
Technical Requirement of Connecting to Power
System for Solar Thermal Power Station
ISSUED ON: MAY 21, 2021
IMPLEMENTED ON: DECEMBER 1, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the PEOPLE Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Prediction of Power Generation Capacity ... 6
5 Start-up and Shutdown ... 7
6 Active Power Control ... 8
7 Reactive / Voltage Regulation ... 9
8 Abnormal Operating Conditions ... 10
9 Secondary Systems ... 10
10 Simulation Models and Parameters ... 12
11 Grid-involved Tests ... 13
Technical Requirement of Connecting to Power
System for Solar Thermal Power Station
1 Scope
This Standard specifies the terms and definitions, and the technical requirements for power generation capacity prediction, start-up and shutdown, active power control, reactive / voltage regulation, abnormal operating conditions, secondary systems, simulation models and parameters, and grid-involved tests of connecting to power system for solar thermal power station.
This Standard is applicable to the thermal energy storage type of solar thermal power stations that adopt steam turbine generator set.
2 Normative References
The following documents are indispensable to the application of this document. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 14285 Technical Code for Relaying Protection and Security Automatic Equipment GB/T 31464 The Grid Operation Code
GB/T 36572 Guidelines of Cyber Security Protection for Electric Power System Supervision and Control
DL/T 448 Technical Administrative Code of Electric Energy Metering
DL/T 687 General Specification for Preventing Electric Mal-operation System with Computer
DL/T 713 Immunity Requirement for Protection and Control Equipment in 500 kV Substation
Provisions on the Safety Protection of Secondary Power Systems, Order No. 5 of the State Electricity Regulatory Commission, 2005
operating condition of unchanged AGC command during the assessment.
NOTE: load static deviation includes positive load static deviation and negative load static deviation.
3.8 AGC Response Time
AGC response time refers to the time difference from the moment when the AGC command starts to change, to the moment when the actual load of the generator set starts to change, and the amplitude of variation exceeds the allowable range of the load static deviation, and no longer returns in the trend.
3.9 Cold Start-up
Cold start-up refers to the start-up of the solar thermal generator set when the metal temperature of the regulating stage of the high-pressure inner cylinder of the steam turbine is lower than 40% of the metal temperature at full load.
3.10 Warm Start-up
Warm start-up refers to the start-up of the solar thermal generator set when the metal temperature of the regulating stage of the high-pressure inner cylinder of the steam turbine is between 40% and 80% of the metal temperature at full load.
3.11 Hot Start-up
Hot start-up refers to the start-up of the solar thermal generator set when the metal temperature of the regulating stage of the high-pressure inner cylinder of the steam turbine is higher than 80% of the metal temperature at full load.
4 Prediction of Power Generation Capacity
4.1 The solar thermal power station shall be equipped with the functions of 15 min ~ 4 h ultra-short-term power generation capacity prediction, 0 ~ 72 h short-term power generation capacity prediction and 0 ~ 168 h mid-term power generation capacity prediction.
4.2 The solar thermal power station shall report recommendations on the generation power curve of each generator set from 0 ~ 168 h from 0:00 on the following day on a daily basis in accordance with the time specified by the grid dispatching institution, with a time resolution of 1 h.
4.3 The solar thermal power station shall report recommendations on the generation power curve of each generator set from 0 ~ 72 h from 0:00 on the following day on a daily basis in accordance with the time specified by the grid dispatching institution, with a time resolution of 15 min.
6 Active Power Control
6.1 Regulation Capability
6.1.1 When the system frequency is within the variation range of 50.5 Hz ~ 48.5 Hz, the solar thermal generator set shall maintain stable operation.
6.1.2 When the system frequency drops to 48 Hz, the reduction in active power output of the solar thermal generator set shall not exceed 5% of the rated active power. 6.1.3 The solar thermal generator set shall be equipped with an automatic generation control (AGC) system, as well as the capability of active power regulation and the function of participating in closed-loop automatic power generation control of the power grid.
6.1.4 When the output active power of the solar thermal generator set is above 20% of the rated curve, it shall be able to achieve continuous and smooth regulation of the active power and the function of participating in the active power control of the system. 6.2 Automatic Generation Control
6.2.1 The requirements for the basic performance indexes of automatic generation control of the solar thermal generator set are as follows:
a) The AGC regulation rate shall not be less than 2% of the generator set?€?s rated active power per minute;
b) AGC response time shall not be greater than 60 s;
c) AGC regulation error shall not be greater than 1% of the generator set?€?s rated active power.
6.2.2 The AGC regulation range of the solar thermal generator set shall not be less than 20% ~ 100% of the generator set?€?s rated active power.
6.2.3 The AGC the solar thermal generator set shall have the following two operation modes:
a) Fixed operation mode, in which, the generator set operates in accordance with the planned curve;
b) Regulation mode, in which, the generator set operates in accordance with the given load of the power grid.
6.2.4 The AGC of the solar thermal generator set shall be able to implement the manual and automatic undisturbed switching between the two control modes of ?€?local control / remote control?€?.
target of the whole station issued by the grid dispatching system.
8 Abnormal Operating Conditions
The solar thermal generator set shall satisfy the relevant requirements of GB/T 31464 under abnormal operating conditions, such as: abnormal generator frequency, generator out-of-step, loss of magnetism and asynchronization, unbalanced load, misalignment and single-phase reclosing, etc.
9 Secondary Systems
9.1 Basic Requirements
9.1.1 The secondary equipment and secondary systems of the solar thermal power station shall comply with the requirements of GB/T 14285, DL/Z 713 and DL/T 687. 9.1.2 The communication mode, transmission channel and information transmission between the solar thermal power station and the grid dispatching institution shall satisfy the stipulations of the grid dispatching institution, including the provision of remote measurement signals, remote communication signals, remote control signals, remote regulation signals and signals of other security automatic equipment, and the provision of signal modes and real-time requirements, etc.
9.2 Normal Operation Signal
The signals provided by the solar thermal power station to the grid dispatching institution shall at least include the following aspects:
a) The voltage, current, frequency, active power and reactive power of the grid connection point of the solar thermal power station;
b) The active power, reactive power and power generation of each generator set of the solar thermal power station;
c) The location of the circuit breaker and isolating switch at the grid connection point of the solar thermal power station;
d) The tap gear of the main boosting transformer of the solar thermal power station (on-load voltage regulation);
e) Input signal of primary frequency modulation;
f) AGC operating parameters, including the upper and lower limits of AGC adjustment, adjustment rate, and the state signals of ?€?permission of AGC operation by generator set?€? and ?€?AGC input / exit by generator set?€?, etc.;

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