Transcript 8 New Resource Qualification Testing

New Resource Qualification Testing
Sandip Sharma
Supervisor, Operations Analysis
New Generation Information Forum
ERCOT Public
November 4, 2014
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New Resource Testing
• Required prior to Part III approval
– AVR
– PFR
– Reactive Capability
– PSS (if appropriate)
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Automatic Voltage Regulator (AVR)
ERCOT Nodal Protocols section:
8.1.1.2.1.4
(5)The
Resource Entity shall perform the Automatic Voltage Regulator
(AVR) tests and shall supply AVR data as specified in the Operating
Guides. The AVR tests must be performed on initial qualification. The AVR
tests must be conducted at a time agreed on in advance by the Resource
Entity, its QSE, the applicable TSP and ERCOT.
Nodal Operating Guide section: 2.2.5
•
•
The test reports should include the minimum and maximum excitation
limiters, volts/hertz settings, gain and time constants, type of voltage
regulator control function, date tested, and voltage regulator control
setting.
Performance can be evaluated by changing the AVR voltage set point
between it’s high set point and low set point values
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ERCOT AVR Performance Test Submittal Guidelines
Please submit data in the following format for AVR Performance Test submittal:
Time Stamp
(1 sample per 4
seconds resolution
minimum)
AVR Set Point
Actual Voltage at
Monitored
Terminals
QOUT
Gross MVAR output
of the Unit
Note: These values
Note: These values should not be
should not be
attained by manual
attained by manual switching static
switching static
reactive devices
reactive devices
The test should demonstrate an increase and decrease of the AVR set point voltage.
Additional AVR test documentation is not required however may aid in the approval
process.
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PFR Testing (NOP Guide Section 2.2.7)
– Droop setting shall not to exceed 5% with a maximum
frequency Dead-Band not to exceed ± 0.036Hz.
– The test should be conducted both with positive and
negative frequency offsets (±0.20 Hz).
– Test is considered successful if after the offset signal
becomes active at least 70% of the calculated MW
contribution is delivered within 16 seconds and the
response is maintained for an additional 30 seconds.
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Nodal Protocols – Reactive Capability
NPNP
3.15
(2):
Units
Required
to
3.15
(3):
Reactive
Requirement
NPProvide
8.1.1.2.1.4
VSS(2): Reactive Testing
(POI)
Requirement
All Generation
Resources(lagging
(including
self-serve power
(a) An over-excited
or producing)
The
Resource
Entity
shall
conduct
reactiveat
capacity
generating
units)
that have
gross
generating
factor
capability
of a
0.95
or less
determined
qualification
tests
to verify
the maximum
unit rating
greater
than
20
MVA
or those
units
the
generating
unit's
maximum
net
powerleading
to be and
lagging
capability
of all Generation
Resources
connected
at the reactive
same
of Interconnection
supplied
to the Point
ERCOT
Transmission
Grid and
required
to provide
VSS.unit
Reactive
capability tests are
(POI) thatat
have
gross
generating
ratingsProfile
the transmission
system
Voltage
performed
on
initial
qualification
and at a
of
aggregating
to greater
20
MVA,
supply
established
bythan
ERCOT,
boththat
measured
atminimum
the
once
every two
years. ERCOT
power toPOI;
the ERCOT
Transmission
Grid, may
shallrequire additional
testing Support
if it has information
indicating that current data
provide Voltage
Service (VSS).
is inaccurate.
The
Resource
Entity is not
obligated to
(b) An
under-excited
(leading
or absorbing)
power
place
Generation
Resources
On-Line solely
for the
factor
capability
of 0.95
or less, determined
at the
purposes
of testing.
Thenet
reactive
tests must
generating
unit's
maximum
power capability
to be
be conducted
at a time
agreed to in
advance
supplied
to the ERCOT
Transmission
Grid
and atby the
Resource Entity,
its QSE,
the Profile
applicable TSP, and
the transmission
system
Voltage
ERCOT.by ERCOT, both measured at the POI;
established
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Power System Stabilizer (PSS)
Nodal operating guide section: 2.2.6 Power System Stabilizers
(3) The Generation Resource shall establish PSS settings to dampen modes with
oscillations within the range of 0.2 Hz to 2 Hz. The PSS settings shall be tested and
tuned to ensure the PSS has appropriate damping characteristics. Final PSS settings
shall be provided to ERCOT and the TSP within 30 days of the PSS in-service date.
(6) If it is determined that a change in PSS settings or the addition of a PSS to a
synchronous Generation Resource would improve overall system performance, ERCOT
shall coordinate with the Generation Resource owner to determine appropriate settings.
Within 180 days of determining appropriate settings, the Generation Resource owner
shall revise the PSS setting and/or install the PSS. Any PSS setting established pursuant
to this section shall be established to dampen modes with oscillations as directed by
ERCOT and place the PSS in-service. Final PSS settings shall be provided to ERCOT
and the TSP within 30 days of the PSS in-service date.
(7) At least every five years, Generation Entities shall conduct performance tests on
PSS settings or verify PSS performance based on operational data
Both AVR and PSS tests should be sent via email to [email protected]
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Questions ?
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