GB/T 40242-2021.Meteorological grades for power consuming.
1 Scope
GB/T 40242 specifies the calculation method and grade classification of meteorological conditions index for electricity demand.
GB/T 40242 is applicable to the forecast, early warning, monitoring, evaluation, scientific research and service of meteorological conditions for electricity demand on weekdays, and can be used as a reference on weekends and holidays.
2 Normative references
The contents of the following documents constitute the essential terms of this document through normative references in the text. Among them, for dated references, only the version corresponding to that date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document.
GB/T 27963-2011 Evaluation of climate comfort in human settlements
3 Terms and definitions
GB/T 27963-2011 and the following terms and definitions apply to this document.
3.1
Meteorological index for power consumption
A quantity that characterizes the degree of influence of meteorological conditions on power demand.
3.2
Temperature humidity index
An index that describes the comprehensive feeling of human body to ambient temperature and humidity.
[Source: GB/T 27963-2011.2.7]
3.3
Daily fundamental power consumption
Daily power consumption that is not related to meteorological conditions.
Note: The unit is dry watt-hour (kW●h).
3.4
​​ Daily weather-caused power consuming
The change in daily power consumption caused by changes in meteorological conditions.
Note: The unit is kilowatt-hour (kW●h).
This standard specifies the calculation method and classification of the meteorological condition index for electricity demand. This standard is applicable to the forecast, early warning, monitoring, evaluation, scientific research and services of meteorological conditions for electricity demand on weekdays, and can be used as a reference on weekends and holidays.

ICS07.060
CCS A 47
National Standard of the People's Republic of China
GB/T40242—2021
Meteorological grades for power demand
Meteorological grades for power demand consuming2021-05-21Released
State Administration for Market Regulation
National Standardization Administration
2021-12-01Implementation
2 Normative reference documents
3 Terms and definitions
4 Index calculation
Grade classification
Appendix A (normative) Calculation method of wide values ​​Gs- and Gw, Appendix B (beautiful)
References
Calculation method of daily meteorological sensitive power ratio (r)-rrKaeerka-
GB/T40242—2021
GB/T-40242—2021
This document is drafted in accordance with the provisions of GB/T1.12020% "Guidelines for standardization work Part 1: Structure and drafting rules of standardization documents".
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed by the China Meteorological Administration.
This document is under the jurisdiction of the National Meteorological Disaster Prevention and Mitigation Standardization Technical Committee (SAC/TC345). The drafting units of this document are: Wuhan Regional Climate Center, State Grid Shandong Electric Power Company Electric Power Research Institute, State Grid Shandong Electric Power Company, Hubei Meteorological Service Center.
The main authors of this document are: Hong Guoping, Ren Shuijian, Lu Kuan, Sun Shijun, He Mingqiong, Wang Miao. -rrKaeerkca-
1 Scope
Electricity demand meteorological condition level
This document specifies the calculation method and level classification of electricity demand meteorological condition index GB/T-40242—2021
This document is applicable to the forecast, preparation, monitoring, evaluation, scientific research and service of meteorological conditions for electricity demand on weekdays, and can be used as a reference on weekends and holidays.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this text. Among them, for dated references, the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document.
GB/ 27963—2011
Evaluation of climate comfort in human settlements
3 Terms and definitions
The following terms and definitions defined in GB/279632011 apply to this document: 3.1
mctcorological index for power consumption meteorological index for power consumption
The quantity that characterizes the influence of meteorological conditions on power consumption. 3.2
temperature humidity index
temperature humidity index
The index that describes the comprehensive feeling of human body to environmental temperature and humidity. LSource: GB/T27963—2011.2.7
Daily basic power consumption
daily fundamental power consumptionDaily power consumption that is not related to meteorological conditions.
Note: The unit is kilowatt-hour (kh).
daily weather-caused power consumingDaily weather-sensitive power consumption
The amount of change in power consumption caused by changes in meteorological conditions. Note: The unit is T watt-hour (kw·h)www.bzxz.net
4 Index calculation
The meteorological condition index of electricity demand should be calculated according to formula (1). 1
-rKaeerkca-
GB/T40242—2021
NTaux - Tan
Where:
Grade division
Electricity demand meteorological condition index:
Daily average temperature value, in degrees Celsius (℃); Maximum temperature value, in degrees Celsius (℃); Daily minimum temperature value, in degrees Celsius (): Daily average relative brightness value, expressed in ancient fractions (%); Oral average wind speed value, in meters per second (m·s-\), T 31.0℃
21.0 CT 31.0 ℃
11.0 CT 21.0 C
T11o℃
....( 1)
According to the meteorological condition index (I) of electricity demand, the meteorological condition level of electricity demand is divided into four levels. The level division should be carried out according to Table 1.
Level division of meteorological condition of electricity demand
Extremely high electricity demand
High electricity demand
High power demand in Sichuan
Low electricity demand
Index range in the area north of Tailing-Huaihe River
1Gw, or G
GwsG+ or GslGg
GwsG+ or Gs.xGa
Index range in the area south of Tailing-Huaihe River
Is-40, or 133.0
— 4,012.0, or 28,0133.0
2.018.020129.0
8.01-25.0
G (i = 70%, 40%, 10%) is the wide value of the meteorological condition level for summer electricity demand, G. (1 = 70%, 10%, 1C%) is the wide value of the meteorological condition level for winter electricity demand, and the determination method is derived from the requirements of Appendix A 2
-rrKaeerKa-
Appendix A
(Normative ）
Calculation method of values ​​Gs, and Gw.
A.1 Calculation method of meteorological condition level threshold Gs.i for summer electricity demand GB/T-40242—2021
Calculate the daily meteorological sensitive electricity consumption ratio (r,) of the past three years in summer respectively on an annual basis, which should be calculated according to Appendix B) Arrange the factory values ​​in ascending order: Calculate the average value of the meteorological condition index (1) of the electricity demand corresponding to 70%, 40%, and 10% (based on four including five people) in summer to obtain the meteorological condition index of summer electricity demand. A.2 Calculation method of meteorological condition level threshold Gw. for winter electricity demand Calculate the daily meteorological sensitive electricity ratio (r, which should be calculated according to Appendix B) in winter for the past three years. Arrange the r, values ​​in ascending order, calculate the average value of the meteorological condition index (1) of electricity demand corresponding to the winter slices of 70%, 40%, and 10% (rounded off), and obtain the meteorological condition level value Gw. for winter electricity demand (-70%.40%.10%). SN
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GB/T40242—2021
Appendix B
(Normative)
Calculation method of daily meteorological sensitive electricity consumption ratio (r,) B.1 Calculation of daily meteorological sensitive electricity consumption ratio (r,) The daily meteorological sensitive electricity consumption ratio is the ratio of daily meteorological sensitive electricity consumption to daily basic electricity consumption, and is calculated according to formula (B.1). P
Where:
Meteorological sensitive consumption ratio. Expressed as a percentage (not): P
HMeteorological sensitive electricity consumption. The unit is kilowatt-hour (kW·h), calculated according to formula (B.2): P,——basic electricity consumption. The unit is kilowatt-hour (kw·h), calculated according to formula (B.3) B.2 Calculation of daily meteorological sensitive electricity consumption (P)) B.2.1 The calculation formula for meteorological sensitive electricity consumption is shown in formula (B.2) P'-Pp
Where:
Meteorological sensitive consumption, unit is kilowatt-hour (kw.h): P
HElectricity consumption, unit is kilowatt-hour (kW·h): Basic electricity consumption, unit is kilowatt-hour (kw, h), calculated according to formula (B.3) B.2.2 Summer daily meteorological sensitive electricity consumption is the difference between summer daily electricity consumption and the basic electricity consumption of the same season. B.2.3 The daily meteorological sensitive electricity consumption in winter is the difference between the daily electricity consumption in winter and the daily basic electricity consumption in autumn of the same year. B.3 The calculation of daily basic electricity consumption (P,)
The calculation of daily basic electricity consumption in autumn should be calculated according to formula (B.3), P
Where:
Daily basic electricity consumption. Unit is kilowatt-hour (kW·h);..(B.1)
..(B.2)
The total number of climate Shuma months in the spring/autumn working month of the same year should be calculated according to the calculation formula (B.4) of the temperature and humidity index in GB/T27963-2011. The temperature and humidity index should be taken between 17.0 and 25.4 comfort level (i.e. climate comfort level 3) is selected. Its total H number is the II value: P,
Where:
Electricity consumption of the climate comfort level in the spring/autumn of the year, in watt-hours (kw·h) Iu - T0.55 X(1 RH) ×(T14.4) Temperature and humidity index. Keep one decimal place;
Daily average temperature, in degrees Celsius (℃): Daily average relative humidity, expressed in ancient fractions (%). -riKaeerkca-
.( B.4)
GB/-- 21984
References
Short-term weather forecast
QX/255—2015
QX/325—2016
Weather supply level
Grid operation meteorological forecast and warning service products Regulations on grid dispatching management (Decree of the State Council of the People's Republic of China [1993] No. 115) China Meteorological Administration. Current model of ground meteorological observation M. Beijing: Meteorological Press, 2003GB/T-40242—2021
Chen Zhenlin, Sun Lian, Zheng Jiangping, et al. Evaluation of the benefits of meteorological services in the power industry (2010) M. Beijing: Meteorological Press, 201061
-riKaeerkca-
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