GB/T 11805-2019General specifications for the automatic control components and devices and their systems for hydro-turbine generating sets (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 11805-2008 "Hydraulic generating units automation components (devices) and their systems basic technical conditions", and

Compared with GB/T 11805-2008, the main technical changes are as follows.

--- Added "terms and definitions" (see 3.2, 3.3, 3.11);

--- Increased the principle of speed setting for pumped storage reversible units or special cases, and modified the electrical of "secondary overspeed contacts"

Fixed value (see 3.6, 3.4 of the.2008 edition);

---Modified the electrical output requirements of components (see 5.1.1.12, 5.1.1.12 of the.2008 edition);

--- Increased the frequency measurement resolution requirements of the residual voltage measurement method of the electrical speed signal device (see 5.1.2.7,.2008 edition) 5.1.2.7);

--- Increased the level requirements for different measurement positions of temperature measuring resistors (RTD) (see 5.1.2.14, 5.1.2.14 of.2008 edition);

--- Revised the relevant requirements for electric valves (see 5.1.2.23, 5.1.2.23 of the.2008 version);

--- Revised the relevant requirements of the vibration (swing) monitoring device (see 5.1.2.25, 5.1.2.25 of the.2008 edition);

--- Revised the relevant requirements of the generator air gap monitoring device (see 5.1.2.26, 5.1.2.26 of the.2008 edition);

--- Revised the relevant requirements of the generator partial discharge monitoring device (see 5.1.2.27, 5.1.2.27 of the.2008 edition);

--- Revised the relevant requirements for the large axis axial displacement monitoring device (see 5.1.2.28, 5.1.2.28 of the.2008 edition);

--- Increased requirements for early smoke detection systems for air sampling (see 5.1.2.37, 5.1.2.37 of the.2008 edition);

---Modified the output accuracy level of the transmitter (see 5.1.2.41, 5.1.2.41 of the.2008 version);

--- Increased the relevant requirements for the unit's bearing external circulation cooling device (see 5.2.2,.2008 version 5.2.2);

--- Removed the relevant requirements for phase-modulation operation in the accident shutdown condition (see 5.2.7, 5.2.7 of the.2008 edition);

1 Scope

This standard specifies the basic technical requirements for the automation components (devices) used in hydroelectric generating units, water inlet valves and speed control systems.

Seek and system configuration requirements, and specify the corresponding test methods and acceptance rules, signs, packaging and other content.

This standard applies to the manufacture of products for hydropower station automation components (devices) and the automation of hydroelectric generating units that meet one of the following conditions.

System configuration and handover acceptance of components (devices).

a) single unit capacity is 10MW and above;

b) Impact type units with a nominal diameter of 1.5 m and above;

c) Francis turbines with a nominal diameter of 2.5 m and above;

d) Axial flow, diagonal flow, tubular flow units with a nominal diameter of 3.3 m and above.

System configuration of automation components (devices) of hydroelectric generating units, pumped-storage reversible units, and tidal generating units of less than the above range

Placement and handover acceptance can be referred to.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

Definition and selection of GB/T 1048 pipe component PN (nominal pressure)

GB/T 2423.4 Environmental testing of electric and electronic products - Part 2. Test method test Db alternating heat (12h 12h cycle)

GB/T 3452.1 O-ring rubber seals for hydraulics - Part 1 . Dimension series and tolerances

GB/T 3452.2 O-ring rubber seals for hydraulics - Part 2. Appearance quality inspection standard

GB/T 8564 Hydrogenerator Set Installation Technical Specifications GB 11120 turbine oil

GB/T 12244 pressure reducing valve general requirements General technical conditions for GB/T 13384 mechanical and electrical product packaging

GB/T 14048.1-2012 Low-voltage switchgear and control equipment - Part 1. General

GB/T 14048.16 Low-voltage switchgear and controlgear - Part 8. Loaded thermal protection (PTC) control for rotating electrical machines unit

GB 16280 linear heat detector

GB/T 17626.4 Electromagnetic compatibility test and measurement technology Electrical fast transient burst immunity test Technical guide for GB/T 28570 hydroelectric generating set status online monitoring system

HG/T 2579 O-ring rubber ring material - Part 1. For general hydraulic systems

JB/T 834 Tropical Low Voltage Electrical Specifications

JB/T 4159-2013 General technical requirements for tropical electrical products

JB/T 8528 ordinary valve electric device technical conditions