This standard specifies the operating conditions, system performance, and performance of parts, test items, technical documents, package, transportation and storage of AC exciter excitation system for large turbine generators.
This standard is applicable to the AC exciter excitation system for 200MW and above turbine generators, and 200MW below AC exciter excitation system may refer to this standard.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent modification to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this standard.
GB 3797 "Electric-Driving Controlgear-Part 2: Electric-Driving Controlgear Incorporating Electronic Devices"
GB/T 4064 "General Guide for Designing of Electrical Equipment to Satisfy Safety Requirements"
GB 4208 "Degrees of Protection Provided by Enclosure" (IP Code)
GB/T 7064 "Requirements for Turbine Type Synchronous Machine"
GB / T 7409 "Eexcitation System of Synchronous Machine"
GB 14285 "Technical Code for Relaying Protection and Security Automatic Equipment"
GB/T 14598.9 "Electrical Relays, Part 22: Electrical Disturbance Tests for Measuring Relays and Protection Equipment Section Three-Radiated Electromagnetic Field Disturbance Tests"
GB 50150 "Standard for Hand-over Test of Electric Equipment Electric Equipment Installation Engineering"
DL/T 596 "The Preventive Test Work for Electric Equipment Regulation"
DL/T 650 "Specification for Potential Source Static Exciter Systems for Large Turbine Generators"
JB/T 7828 "Specification for Package, Storage and Transportation of Relay and Equipment"
3 Terms
The terms established in GB/T 7409 and DL/T 650 are applicable to this standard.
4 Operating Conditions
4.1 Operating ambient
4.1.1 Absolute altitude and highest environment temperature
Table 1 Highest Environment Temperature at Different Absolute Altitudes
Absolute altitude H
m H≤1000 1000
Highest environment temperature ℃ 40 37.5 35 32.5
See Table 1 for the specification of the highest environment temperature around different absolute altitudes.
4.1.2 The surrounding lowest environment temperature shall be -5℃.
4.1.3 The monthly average maximum relative humidity shall be 90%.
4.1.4 The excitation regulator shall generally be installed in air conditioning room. The surrounding air shall be free from such gas having explosive risk, eroding metal and destroying insulation.
4.1.5 The permissible vibration condition of excitation system (except rotating part) shall be (10~150) Hz, and the vibration acceleration shall not be larger than 5m/s2.
4.2 Operational power supply
AC voltage deviation -15%~+10%, frequency deviation ~6%~+4%;
DC voltage deviation -20%~+10%.
4.3 When the operating conditions exceed above specification, the demander shall negotiate with supplier.
