Classification requirements of People's Republic of China national standard automatic diesel generating set

1, the subject content and scope of application

This standard specifies the automatic grading requirements for automated diesel generating sets.

This standard applies to the automatic diesel generating set (hereinafter referred to as the unit) manufactured according to GB l2786 - 91 automatic diesel generator set general technical specifications.

2 citation criteria

GB 5320 - 85 internal combustion engine power station terms

General specification for GB l2786 - 9L automatic diesel generating set

3 terms

Press GB 5320.

4 General requirements

4.1 units shall meet the requirements of this standard and GB l2786.

4.2 special requirements for the unit shall be provided for in the technical conditions of its products.

5 automated grading

The automation level of the 5.1 units shall comply with the provisions of table 1.

Table 1

Automation level

Automatic grade characteristics

Unattended running time, H

(not less than)

One

Automatic control, protection and display of major items

4; 8; 12

Two

The characteristics of the L class, and the automatic control of maintenance, readiness, operation, etc.

24; 36; 48

Three

2 stage characteristics, and 2 units of the same type of parallel operation, such as automatic control

120; 180; 240

Four

The characteristics of the 3 stage, and the automatic control of parallel operation of 2 or more units of the same type, parallel operation of different capacity units and technical diagnosis, etc.

240; 360; 480

5.2 automation level feature content

5.2.1 L level automation

A. automatically starts by automatic control or remote control instructions.

The B. accepts the load automatically according to the load instruction.

C. automatic shutdown according to automatic control instructions or remote control instructions.

D. automatically adjusts frequency and voltage to ensure the accuracy of frequency modulation and voltage regulation to meet the technical requirements of products.

E. automatic storage battery charging and / or compressed air bottles automatically add gas.

F. has overload, short circuit, over speed (or over frequency), cooling water temperature is too high, oil pressure is too low and other items of protection.

According to the need of setting up over voltage and low voltage, voltage loss, less speed (or less frequency), the oil temperature is too high, the starting air pressure is too low, the fuel tank oil level is too low, the temperature of the windings of the generator protection device in the fields.

G. has an acousto-optic signal system that indicates normal operation or abnormal operation.

5.2.2 2 level automation

A. 5.2.1 specifies the content.

B. automatically maintains the ready running state of the emergency unit, that is, the oil pressure, oil temperature and cooling water temperature of the diesel engine under emergency starting and rapid loading are up to the technical specifications.

When the C. unit auto start fails, the program start system automatically transfers the start command to another standby unit.

5.2.3 3 level automation

A. 5.2.2 specifies the content.

B. automatic replenishment of fuel, oil, and cooling water.

According to the automatic control instruction or the remote control instruction, the C. can automatically shunt and solve the 2 units of the same type, and automatically and stably transfer the active power and reactive power of the load.

5.2.4 4 level automation

A. 5.2.3 specifies the content.

B. according to automatic control instructions or remote control instructions, not less than 3 units of the same type of automatic shunt and split, automatic and smooth transfer of the load of active power and reactive power.

C. according to the automatic control instructions or remote control instructions, 2 different capacity units (the power ratio is not greater than 3: 1), 2 different capacity units and the power grid between the automatic shunt and disconnection. Active power and reactive power for automatic and smooth transfer of loads.

D. centralized automatic control. The automatic control of the working state of a plurality of automatic units can be realized by a unified control center.

Automatic diagnosis of E. speed regulating device and voltage regulating device. The technical condition of the speed regulating device and the voltage regulating device can be determined by a certain automatic device.