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24/30457087 DC BS EN IEC 61116 Electromechanical equipment guide for small hydroelectric installations, 2024
- 4_492e_CD.pdf [Go to Page]
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms, definitions, symbols and units [Go to Page]
- 3.1 General
- 3.2 General terminology
- 3.3 Units
- 4 Methodology
- 5 Description of installation and operating conditions of power station [Go to Page]
- 5.1 Site conditions
- 5.2 Hydraulic conditions for plant and design criteria for the units
- 5.3 Electrical conditions for plant operation [Go to Page]
- 5.3.1 The plant is intended to operate in isolated grid
- 5.3.2 The plant is intended to operate in parallel with a grid which imposes the frequency
- 5.3.3 Energy transport and distribution
- 5.4 Types of regulation and modes of operation [Go to Page]
- 5.4.1 Frequency regulation
- 5.4.2 Power regulation
- 5.4.3 Level control
- 5.4.4 Flow regulation
- 5.4.5 Simplified governing
- 5.5 Automation, telemetry, remote control, alarms
- 6 Equipment specifications [Go to Page]
- 6.1 Technical requirements
- 6.2 Limits of the supply [Go to Page]
- 6.2.1 For the hydraulic system
- 6.2.2 For the electric system
- 6.2.4 Elements not normally included in the supply
- 6.3 Specifications of the elements of the plant [Go to Page]
- 6.3.1 Trashrack and rack cleaner
- 6.3.2 Water-level control
- 6.3.3 Discharge closure devices (see Figure 6) [Go to Page]
- 6.3.3.1 Stop-logs or maintenance gates
- 6.3.3.2 Intake and head gates and valves
- 6.3.3.3 Inlet valves for unit protection
- 6.3.4 Penstock
- 6.3.5 Turbine (see Figure 7) [Go to Page]
- 6.3.5.1 Impulse turbine (Pelton, ...)
- 6.3.5.2 Reaction turbine (Francis, Kaplan, propeller, ...)
- 6.3.5.3 Guide and thrust bearings
- 6.3.5.4 Shaft coupling, direct or with speed increaser
- 6.3.5.5 Monitoring and protection
- 6.3.5.6 Governing systems
- 6.3.5.7 Auxiliary equipment for the turbine
- 6.3.6 Generator [Go to Page]
- 6.3.6.1 Synchronous generators
- 6.3.6.2 Asynchronous (induction) generator
- 6.3.6.3 Guide and thrust bearings
- 6.3.6.4 Monitoring and protection
- 6.3.7 Automatic control system
- 6.3.8 Main transformers (reference can be made to IEC 60076)
- 6.3.9 Auxiliary equipment [Go to Page]
- 6.3.9.1 Circuit-breakers (reference can be made to IEC 62271-100) The characteristics which should be studied are as follows:
- 6.3.9.2 Isolating (disconnecting) switches (reference can be made to IEC 62271-102)
- 6.3.9.3 Auxiliary service transformer (reference can be made to IEC 60076)
- 6.3.9.4 Measurement and protection transformers
- 6.3.9.5 Capacitor bank (see IEC 60831-1 and IEC 60871-1)
- 6.3.9.6 Connection with the network
- 6.3.9.7 Metering
- 6.3.9.8 Earthing circuit
- 6.3.9.9 D.C. supply
- 6.3.10 Spare parts and special tools
- 6.3.11 Mechanical handling
- 6.3.12 Corrosion protection
- 6.4 Guarantees [Go to Page]
- 6.4.1 General
- 6.4.2 Discharge closure devices
- 6.4.3 Turbine
- 6.4.4 Generator
- 6.4.5 Governor
- 6.4.6 Speed increaser
- 6.4.7 Excitation equipment
- 6.4.8 Comments concerning the complete generating set
- 6.4.9 Main transformer
- 6.5 General conditions for tender enquiries and comparison of tenders [Go to Page]
- 6.5.1 Instructions to tenderers
- 6.5.2 General conditions of contract
- 6.5.3 Technical comparison of tenders
- 7 Inspection, delivery, operation and maintenance [Go to Page]
- 7.1 Approval of the design and inspection of the work [Go to Page]
- 7.1.1 Approval of design documents
- 7.1.2 Inspection of materials and sub-assemblies
- 7.1.3 Inspection at manufacturer's works
- 7.1.4 Delivery
- 7.1.5 Assembly at site [Go to Page]
- 7.1.5.1 Initial conditions
- 7.1.5.2 Follow-up of site erection
- 7.1.5.3 Setting up and checking of the site
- 7.1.5.4 Erection schedule
- 7.2 Commissioning [Go to Page]
- 7.2.1 Preliminary checks before watering-up
- 7.2.2 Watering-up
- 7.2.3 Unit rotation [Go to Page]
- 7.2.3.1 Low speed run
- 7.2.3.2 Rated speed
- 7.2.3.3 Overspeed
- 7.2.4 Preliminary checks and electrical load tests
- 7.3 Operation [Go to Page]
- 7.3.1 Probationary period
- 7.3.2 Guarantee period [Go to Page]
- 7.3.2.1 Checking of technical guarantees - Acceptance tests
- 7.3.2.2 Check on operational parameters
- 7.3.3 Normal operation
- 7.4 Training of personnel
- 7.5 Checking and maintenance
- Bibliography [Go to Page]
