Transcript Shall complete the Technical Schedules A/B fully and correctly in the

Teleprotection Equipment
Clarification
Meeting
Tejin Gosai
PTM&C
24th April 2015
Requirements
• Shall comply with Eskom Standard (specification), 240-77422828
“Teleprotection Equipment for use on Digital Telecommunications
Channels or Dedicated Optical Fibre”.
• Shall complete the Technical Schedules A/B fully and correctly in
the 240-77422828 specification.
• Routine and Type Tests shall be done according to the Eskom
specification 240-77422828.
• There is a spread sheet attached with the Enquiry that lists the type
tests which must be completed. Displayed on next slide.
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Type Test List
#
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
Test
Test 1
Test 2
Test 5
Test 6
Test 7
Test 8
Test 9
Test 10
Test 11
Test 16
Test 19
Test 20
Test 21
Test 22
Description
Initial visual inspection
Initial performance
Electrical impulse
Supply variation
Supply interruptions
Electrical environmental
interference
Dry heat
Low temperature
Damp heat
Humidity cycling
Insulation resistance (across
isolating barrier)
Soak
Final performance
Final visual performance
Electrostatic Discharge Test
Radiated interference Test
Reflected Noise Test
Capacitor Discharge Test (Input
Burden)
Security & Dependability Test
Jitter tolerance Test
Optical Performance Test
Type Tests for IEC61850
Certificate
Available
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Certificate location in Tender
Certificate Date Documentation
Requirements
• The teleprotection unit would either be mounted in the
telecommunication’s cabinet or the protection cabinet.
• The teleprotection unit size must be limited to 3u.
• The teleprotection equipment shall be able to cater for conventional
interfaces to the protection equipment (i.e. trip inputs and trip output
contacts) and the telecontrol equipment (that is alarm contacts).
• The Teleprotection unit must have an “on/off” switch.
• The cable construction drawings and technical specification manuals
shall be provided and in English.
• The number of unit addresses configurable shall be a minimum of 265
addresses.
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Telecoms Interfaces
•
Optical interfaces (fibre)
•
G652 compliant
•
Single Mode
•
Distance – 1km to 100km. If there is a driver of a distance of more than
100km, please include in tender.
•
Provide technical details on the optical interface (e.g. optical budget,
losses, receiver levels, etc.).
•
The optical receiver shall not overload if the output of the transmitter is
connected directly to the receiver input. This requirement is for short
lines and to facilitate testing.
Telecoms Interfaces
• X21 (64kBit/s)
•
The X.21 interface shall comply to section 3.2.7 of the Eskom Standard,
240-77422828.
•
The teleprotection equipment shall operate to specification over a 64
kBit/s telecommunications channel.
•
Provide technical details on the interface (e.g. losses, receiver levels,
configurations, etc.).
•
The supplier shall also indicate whether the G703 - 2048 kBits/s is
available and specify what interface is used.
Capacitor Discharge Test
Switch
2
1
+
Command
Input
Vnom
C
Vtest = 1.5 x Vnom
-
• Where C is Capacitor, Vnom is the nominal voltage & Vtest is the test voltage:
•
For System A, Vnom = 110/220 V DC & C = 2 uF
•
For System C, Vnom = 48 V DC & C = 0.2 uF
• When Switch is in position 1, C is charged to 1.5 x Vnom.
• When Switch is in position 2, C discharges the 1.5 x Vnom into the Command Input:
• For System A, Vtest = 110/220 V DC x 1.5 = 165/330 V DC
• For System C, Vtest = 50 V DC x 1.5 = 75 V DC
• If the Command Input is not triggered by the 1.5 x Vnom, then the unit passes this test.
• A separate module can be developed to cater for this requirement subject to Eskom’s
approval (Input Burden Interface/Protection Interface Adaptor)
HMI
• The management console HMI shall be PC based and be fully
compatible with the Microsoft Windows 7 or later versions of
Microsoft operating system environments.
• Adaptors required to connect the equipment to PC/Laptop ports shall
be compatible with the modern standard PC/Laptops e.g. USB to RS232.
• If web interfaces are used, these interfaces must not require that the
web interface parameters (e.g. IP addresses, etc) be changed on the
PC’s web software as this might create problems on the user’s
Eskom’s Operating System.
Requirements
• The IEC 61850 standard implementation is an option but not
compulsory.
• If the IEC 61850 standard is implemented, then the implementation
shall conform to all the standards listed in section 3.2.9 of the Eskom
Standard, 240-77422828 “Teleprotection Equipment for use on Digital
Telecommunications Channels or Dedicated Optical Fibre”.
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Additional Info
• Suppliers are encouraged, to make proposals for facilities/features not
included in the Eskom specification which, in their opinion, will be
appropriate to Eskom’s requirements.
• Suppliers shall indicate in their tenders any aspects of their
equipment’s non conformance to the enquiry.
• Suppliers shall indicate in their tenders any deviations of their
equipment to the enquiry.
• Suppliers shall quote the actual or intended National or International
standards, specifications, or recommendations with which their
equipment complies.
• Suppliers shall provide a list of utilities where the Teleprotection units
have been installed.
Additional Info
• Suppliers shall provide Training as part of the Tender.
• Suppliers shall provide a complete list of Spares and the time period of
availability after contract expiration.
• Suppliers shall provide information on how they would provide
professional technical support to Eskom (repairs, faults, queries, time
lines etc.).
• Suppliers shall confirm and provide commitment (a policy) on the
support for discontinued versions of the equipment.
Any Questions ?
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