This standard specifies the automation classification requirements for automated diesel generator sets. This standard applies to automated diesel generator sets manufactured in accordance with GB 12786-91 "General Technical Requirements for Automated Diesel Generator Sets". GB/T 4712-1996 Automated Diesel Generator Set Classification Requirements GB/T4712-1996 Standard Download Decompression Password: www.bzxz.net

National Standard of the People's Republic of China
Requirements of Classification for Automatic Diesel Generating Sets
Subject Content and Scope of Application
This standard specifies the requirements for automation classification of automatic diesel generating sets. GB/T 4712—1996
Replaces GB471284
This standard applies to automatic diesel generating sets (hereinafter referred to as sets) manufactured in accordance with GB12786—91≤General Technical Conditions for Automatic Diesel Generating Sets\.
2 Reference Standards
GB5320--85 Terminology of Internal Combustion Engine Power Stations GB12786-91 General Technical Conditions for Automatic Diesel Generating Sets 3 TerminologyWww.bzxZ.net
According to GB5320.
4 General Requirements
4.1 The set shall comply with the provisions of this standard and GB12786. 4.2 When there are special requirements for the unit, they should be supplemented in its product technical conditions. 5 Automation classification
5.1 The automation level of the unit shall comply with the provisions of Table 1. Table 1
Automation level
Automation level characteristics
Automation level automatic control, protection and display of major items Level 1 characteristics, as well as automatic control of standby operation status, etc. Level 2 characteristics, as well as automatic control of parallel operation of two or more units of the same model, parallel operation of units of different capacities and technical diagnosis, etc.
5.2 Automation level characteristics content
5.2.11 level automation
According to manual control instructions or remote control b. Automatically accept the load according to the load instruction,
GB/F4712--1996
c. Automatically stop according to the automatic control instruction or remote control instruction. d. Automatically adjust the frequency and voltage to ensure that the accuracy of frequency and voltage regulation meets the requirements of product technical conditions. Automatically charge the battery and (or) automatically charge the compressed air bottle. e.
f. Protective devices for overload, short circuit, overspeed (or overburning rate), high cooling water temperature, low oil pressure, etc. Protective devices for overvoltage, long-term voltage, voltage loss, underspeed (or underfrequency), high oil temperature, low starting air pressure, low fuel tank oil level, high generator winding temperature, etc. are selected as needed. Share. There is an audible and visual signal system indicating normal operation or abnormal operation. 5.2.2 Level 2 Automation
1. All contents specified in 5.2.1.
b. Automatically maintain the ready-to-run state of the unit, that is, the oil pressure, oil overflow and cooling water temperature during emergency start and rapid loading of the diesel engine all reach the specified values ​​of the product technical conditions. c. When the unit fails to start automatically, the program start system automatically transmits the start command to a standby unit. 5.2.3 Level 3 Automation
a. All contents specified in 5.2.2.
b. Automatic replenishment of fuel, oil and cooling water. c. Automatic parallel connection and disconnection of two units of the same model and automatic and smooth transfer of active power and reactive power of the load according to automatic control instructions or remote control instructions.
5.2.4 Level 4 automation
. All contents specified in 5.2.3.
h. Automatic parallel connection and disconnection of no less than 3 units of the same model and automatic and smooth transfer of active power and reactive power of the load according to automatic control instructions or remote control instructions.
c. Automatic parallel connection and disconnection between two units of different capacities (power ratio not greater than 31) and between two units of different capacities and the power grid according to automatic control instructions or remote control instructions. Automatic and smooth transfer of active power and reactive power of the load. d. Centralized automatic control. The unified control center can realize automatic control of the working status of multiple automated units. e. Automatic technical diagnosis of speed regulating devices and voltage regulating devices. That is, the technical status of the speed regulating device and the voltage regulating device can be determined by a certain automatic device.
Additional remarks:
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of Lanzhou Power Vehicle Research Institute. This standard is drafted by Lanzhou Power Vehicle Research Institute, and the Power Generation Equipment Factory of Guangxi Yuchai Machinery Co., Ltd. and Fuzhou Power Generation Equipment Factory participated in the drafting.
The main drafters of this standard are Chen Yingfang, Zhang Jijiang, Hu Zhi, and Lin Zhongshan.
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