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Template: AEMO Generator Performance Standards (GPS)

Preview of template's gridmo Flow showing Nodes

Last updated: 21 Jan 2025

Country:

AU

Software required:

PSS®E
PSCAD™

Source: AEMC | National Electricity Rules | Version 222 | 19 December 2024

How to download: Add a new Flow in gridmo and select this template from the list.

Quick start

Before running this template, complete the following:

  • Configure your Global Variables and Scenario Variables using gridmo's Model setup template.
  • Add this template to your project. Follow the below GPS-requirement-specific configuration steps.

Background​

The number and complexity of generation interconnections have increased during the energy transition. In an effort to ensure the adequate performance of generating systems and to ensure efficient design principles by utilising standards where possible, the AEMC established Technical Requirements in the National Electricity Rules. AEMO requires proponents to show compliance with these Technical Requirements (i.e. NER S5.2.5), as well as other requirements, and establish access standards - collectively referred to as "Generator Performance Standards (GPS)". This template includes a selection of tests to demonstrate compliance with these "Generator Performance Standards (GPS)".

Configuration​

S5.2.4 Provision of information​

The purpose of S5.2.4 is to outline the information which your project must provide to AEMO or the NSP. In particular, this includes the provision of PSS®E and PSCAD™ models of your generating system which meet the requirements of the AEMO | Power System Model Guidelines | Version 2 | July 2023. We've included tests which assess some of these requirements.

S5.2.5.1 Reactive power capability​

The purpose of S5.2.5.1 is to identify your generating system's reactive power capability while operating across a range of different conditions (e.g. active power outputs, connection point voltages and ambient temperatures).

Unconstrained PQ capability curves are typically generated using in-built DPL scripts within DIgSILENT PowerFactory. Upon request, we have included tests to construct a constrained PQ capability curve using PSS®E and/or PSCAD™. Each point on the constrained PQ capability curve is constructed using the results of a dynamic simulation. In each dynamic simulation, the generating system is sent an active power and reactive power set point which purposefully exceeds the capability of the generating system and therefore settles upon the defined limits of the generating system.

note
  • Tests are conducted at infinite SCR and X/R.
  • Tests are conducted using a playback generator with infinite inertia.

S5.2.5.2 Quality of electricity generated​

The purpose of S5.2.5.2 is to confirm that your generating system's output does not exceed specified voltage fluctuation, harmonic voltage distortion and voltage unbalance limits.

info

We don't currently provide tests for S5.2.5.2.

S5.2.5.3 Generating system response to frequency disturbances​

The purpose of S5.2.5.3 is to confirm the ability of your generating system to maintain continuous uninterrupted operation for a particular frequency operating standard. We've also included tests to confirm that some form of frequency protection exists and its behaviour is as expected.

note
  • Tests are conducted at infinite SCR and X/R.
  • Tests are conducted using a playback generator with infinite inertia.
  • All frequency 'steps' are completed at a 4Hz/s ramp rate.

Step 1 - Choose frequency operating standard​

Choose a frequency ride-through SMIB playback test depending on your relevant frequency operating standard. Several common operating standards have been provided below. Copy and paste the chosen frequency operating standard into the PSS®E Dynamic and PSCAD™ Node SMIB frequency playback fields in all Nodes connected to Start Node 1028.

Under frequency​
0,          50
5,          50
5.75,       47
120,        47
120.5,      49
600,        49
600.2125,   49.85
Over frequency​
0,          50
5,          50
5.5,        52
120,        52
120.25,     51
600,        51
600.2125,   50.15

S5.2.5.4 Generating system response to voltage disturbances​

The purpose of S5.2.5.4 is to confirm the ability of your generating system to maintain continuous uninterrupted operation for particular voltages at the connection point. We've also included tests to confirm that some form of voltage protection exists and its behaviour is as expected.

note
  • Tests are conducted at infinite SCR and X/R.
  • Tests are conducted using a playback generator with infinite inertia.
  • Ride-through tests for each voltage range are chosen such that the time spent within that range includes any time spent in the more onerous ranges.
  • "over 130% of normal voltage" is represented by 132%.

S5.2.5.5 Generating system response to disturbances following contingency events​

The purpose of S5.2.5.5 is to confirm your generating system's response during and after disturbances. There are several parts of this performance standard:

  • [SMIB] FRT Iq injection curve: Apply balanced voltage disturbances at infinite SCR to construct the FRT Iq injection curve.
  • [SMIB] FRT transition bands: Smoothly enter and exit a fault ride-through mode (known as transition band tests in this template).
  • [SMIB] Balanced voltage disturbances: Response to balanced voltage disturbances (P recovery time, Iq rise time, Iq setting time).
  • [SMIB] Unbalanced faults: Unbalanced fault performance (negative sequence capacitive current injection).
  • [SMIB] Balanced MFRT: Balanced multiple-fault ride-through performance (MFRT).
  • [SMIB] Unbalanced MFRT: Unbalanced multiple-fault ride-through performance (MFRT).
  • [Network] Network fault performance: Response to balanced and unbalanced faults, including MFRT as required in a network model (P recovery time, Iq injection, Iq rise time and Iq settling time).
info

Tests for "[Network] Fault performance" help demonstrate compliance to S5.2.5.5(c), S5.2.5.5(d) and S5.2.5.5(k).

note

There are three alternatives for FRT Iq injection curves:

  1. ΔIq v.s. V
  2. ΔIq v.s. ΔV
  3. Iq v.s. V

Assessment of S5.2.5.5 Iq injection amount is specified in the NER as the gradient of the ΔIq/ΔV curve. Given, the initial voltage is always the same in the test, the gradient of the ΔIq/V curve may also be used, as shown below.

gradient = [ΔIq2 - ΔIq1] / [ΔV2 - ΔV1], where ΔV = Vfinal - Vinitial

gradient = [ΔIq2 - ΔIq1] / [(Vfinal2 - Vinitial) - (Vfinal1 - Vinitial)]

gradient = [ΔIq2 - ΔIq1] / [Vfinal2 - Vfinal1]

However, the initial Iq is not always the same and therefore the gradient of the Iq v.s. V curve may not be used.

note

The Analysis Nodes within this template assume Automatic Access Standards (AAS). However, we note that S5.2.5.5 is frequently a Negotiated Access Standard (NAS) based on the following:

  • Achieving the AAS 4% (LVRT) and 6% (HVRT) reactive current gains may result in unstable operation (LVRT/HVRT flag retriggering) under low SCR conditions.
  • Achieving the AAS 40 ms and 70 ms iq rise and settling times may result in unstable performance (LVRT/HVRT flag retriggering) under very low SCR conditions.
  • Achieving the AAS 100 ms active power rise time after the completion of a fault may not be achievable for large generating systems under low SCR conditions.

Step 1 - Confirm voltage disturbance values used to trigger LVRT and HVRT for FRT transition band tests​

You may need to manually adjust the loop variables l_test_vdip and l_test_vrise within Node 1588 to ensure the following test methodology:

  • The voltage dips (l_test_vdip) low enough under the given SCR condition to trigger LVRT mode in your generating system - without tripping the generator; and
  • The voltage rises (l_test_vrise) high enough under the given SCR condition to trigger HVRT mode in your generating system - without tripping the generator.

Step 2 - Set up network cases and faults​

The Start Node 1862 [NETWORK] S5.2.5.5: Network fault performance is used to complete dynamic power system studies on a wide-area PSS®E model, known as NEM snapshots (or colloquially also known as 'OPDMS snapshots').

info

Currently, this template assumes that all generators which are to be considered as part of the studies are already merged into the network model. The network model is also load flow stable and dynamically stable. Your generating system does not need to be present in the NEM snapshot as it will be auto-merged by gridmo.

Update the following to complete the S5.2.5.5 network studies:

  • In the Loop:Start Nodes for this test:
  • In the PSS®E Static Nodes for this test:
    • Set your generating system into is typical voltage/reactive power control mode based on your proposed voltage control strategy.
    • Update the Network model field in the Define simulation & Define outputs tab to the relative file path to your NEM/OPDMS tuned snapshot .sav file.
    • Update the Network model: Bus number field in the Define simulation & Define outputs tab to the bus number of your generator's connection point in the NEM/OPDMS model.
  • In the PSS®E Dynamic Nodes for this test:
    • Set your generating system into is typical voltage/reactive power control mode based on your proposed voltage control strategy.
    • Update the Network dynamics model data field in the Define simulation tab to the relative file path to your NEM/OPDMS tuned snapshot .dyr file - or alternatively, a folder which contains all the .dyr files required for the NEM/OPDMS tuned snapshot.
    • Update the Network dynamics user models field in the Define simulation tab to the relative file path to the folder which contains all dynamic libraries for your NEM/OPDMS tuned snapshot, including the dsusr.dll file.

If you have multiple NEM snapshots you are studying, copy the entire Loop:Start to Loop:End section and update as required based on your additional NEM snapshot(s).

S5.2.5.6 Quality of electricity generated and continuous uninterrupted operation​

The purpose of S5.2.5.6 is to confirm that your generating system does not disconnect as a result of specified voltage fluctuation, harmonic voltage distortion and voltage unbalance levels.

info

We don't currently provide tests for S5.2.5.6. Additionally, compliance is often demonstrated via product information obtained via your OEM.

S5.2.5.7 Partial load rejection​

The purpose of S5.2.5.7 is to confirm the ability of your generating system to maintain continuous uninterrupted operation during and following a particular power system load reduction event or a separation event with an equivalent impact.

  • If your generating system is comprised of only grid-following asynchronous plant, then you could instead propose compliance with Section S5.2.5.7 via demonstrating compliance with Section S5.2.5.3 of the guidelines. Specifically, you could assert that any system separation event, regardless of load reduction of pre-disturbance level cannot exceed the minimum frequency band and ROCOF as per S5.2.5.3.
  • However - if you have a synchronous plant or grid-forming inverters in your generating system, the inertia of your generating system may need to be considered in your generating system's ability to maintain continuous uninterrupted operation during a partial load rejection event.
note

The template includes the ability to playback the network load reduction event into a SMIB model. This is completed by recording the voltage, frequency and angle response at the proposed connection point in the network case where your generating system has not yet been integrated and playing this back to your PSS®E and PSCAD™ SMIB generating system models.

Step 1 - Create load reduction event​

If you are proposing to complete a partial load rejection test using a network case, you will need to provide a PSS®E Dynamic model of the NEM (colloquially known as an 'OPDMS snapshot' in the industry). We do not provide these snapshots. You will have to provide your own pre-tuned dynamic base cases for these tests.

Once you have your NEM snapshot, you can complete the following steps to modify the template to complete a partial load rejection test on a network case:

  • In the PSS®E Static Nodes:
    • Set your generating system into is typical voltage/reactive power control mode based on your proposed voltage control strategy.
    • Update the Network model field in the Define simulation & Define outputs tab to the relative file path to your NEM/OPDMS tuned snapshot .sav file.
    • Update the Network model: Bus number field in the Define simulation & Define outputs tab to the bus number of your generator's connection point in the NEM/OPDMS model.
  • In the PSS®E Dynamic Nodes:
    • Set your generating system into is typical voltage/reactive power control mode based on your proposed voltage control strategy.
    • Update the Network dynamics model data field in the Define simulation tab to the relative file path to your NEM/OPDMS tuned snapshot .dyr file - or alternatively, a folder which contains all the .dyr files required for the NEM/OPDMS tuned snapshot.
    • Update the Network dynamics user models field in the Define simulation tab to the relative file path to the folder which contains all dynamic libraries for your NEM/OPDMS tuned snapshot, including the dsusr.dll file.
    • Special for S5.2.5.7 - you need to provide an event, using either a SET, LINE=, STATUS=OUT, AT= command or similar, to actually create the partial load rejection event in the network case.

S5.2.5.8 Protection of generating systems from power system disturbances​

The purpose of S5.2.5.8 is to confirm the generating system's active power response to power system frequency changes - in particular the speed at which the generating system output reduces due to an over frequency event.

Demonstration of performance is typically only required for generators > 30 MVA. Additionally, this test requires input from AEMO and/or your NSP to confirm at which frequency a reduction of power should be triggered.

note
  • Tests are conducted using a playback generator with infinite inertia.
  • All frequency 'steps' are completed at a 4Hz/s ramp rate.

Step 1 - Choose frequency operating standard​

Choose a frequency ride-through SMIB playback test depending on your relevant frequency operating standard. Several common operating standards have been provided below. Copy and paste the chosen frequency operating standard into the PSS®E Dynamic and PSCAD™ Node SMIB frequency playback fields in all Nodes connected to Start Node 1567.

0,          50
5,          50
5.25,       51
10,         51
10.25,      50

S5.2.5.9 Protection systems that impact on power system security​

The purpose of S5.2.5.9 is to confirm that your generating system has adequate protection systems.

info

We don't currently provide tests for S5.2.5.9. Additionally, compliance is often demonstrated via design reports.

S5.2.5.10 Protection to trip plant for unstable operation​

The purpose of S5.2.5.10 is to confirm that your generating system has adequate protection systems.

info

We don't currently provide tests for S5.2.5.10. Additionally, compliance is often demonstrated via design reports.

S5.2.5.11 Frequency control​

The purpose of S5.2.5.11 is to confirm the generating system's active power response to power system frequency changes. The control system response is tested to assess:

  • the value to which the active power is changed as part of a frequency response mode; and
  • that it is adequately damped.
note
  • Only SMIB studies have been completed. Network-wide studies may be added to further demonstrate that the response is adequately damped.
  • Frequency disturbances used to create the P(f) droop curve are completed at a 4Hz/s ramp rate.

Step 1 - P(f) droop curve | Choose frequency steps simulation time​

Choose the frequency steps simulation time in the "P(f) droop curve" tests which is sufficient for your generating system to settle. This simulation time will depend on your ramp up and ramp down control limits (e.g. expressed in MW/sec). If required, edit the simulation time of the relevant PSS®E Dynamic, PSCAD™ and Plot Nodes.

Step 2 - Select source energy​

For the UF and UF disturbance tests, select source energy values which correspond to 50% and 5%. In the relevant Loop: Start Nodes, edit the following Loop Variables: l_test_se_avail_pscad and l_test_se_avail_psse.

Step 3 - Choose active power control system ramp rate​

For the "Freq step during P ramp" tests, a frequency step occurs during an active power ramp. This test is to confirm the generating system's "output [is] the summation of the AGC setpoint and the PFR Settings" in accordance with section 2.3.1 of AEMO | Primary Frequency Response Requirements | Effective 8 May 2023. You may need to reduce the active power control system ramp rate to ≈ 0.02 [p.u./s] to ensure the frequency step occurs during the active power ramp.

S5.2.5.12 Impact on network capability​

The purpose of S5.2.5.12 is to confirm the extent to which your generating system impacts inter-regional and intra-regional network capability.

The assessment is divided into two parts:

  • Static studies: Static studies may be used to assess thermal limits and voltage stability. Please refer to our template which addresses these requirements: Preliminary network studies.
  • Dynamic studies: Dynamic studies are completed where faults are applied on a network case where the generating system is explicitly modelled and modelled as a negative load. The responses from both representations of the generating system are compared.
info

We don't currently provide tests for S5.2.5.12, though this is coming soon.

S5.2.5.13 Voltage and reactive power control​

The purpose of S5.2.5.13 is to confirm the capability of your generating system's reactive power control system.

note
  • S5.2.5.13(c1)(3): For reactive power and power factor control tests, the NSP may determine whether to use a setpoint reference step test (i.e. Qref or PFref step) or a 5% voltage disturbance test (i.e. Vgrid step) for the purposes. The template contains both methodologies.
  • S5.2.5.13(c1)(3)(ii): When in reactive power and/or power factor control modes, voltage disturbances (i.e. Vgrid steps) will not cause the limiting device to operate. Therefore, such tests are not included. Instead, "from an operating point where a voltage disturbance of 2.5% would just cause the limiting device to operate" is assumed to mean "from an operating point where a [change in setpoint of 25% of the reactive power capability] would just cause the limiting device to operate."

Step 1 - Q(V) droop curve | Choose grid voltage steps simulation time​

Choose the grid voltage steps simulation time in the "Q(V) droop curve" tests which is sufficient for your generating system to settle. This simulation time will depend on your reactive power control system gains as well as your ramp up and ramp down control limits (e.g. expressed in MVAr/sec). If required, edit the simulation time of the relevant PSS®E Dynamic, PSCAD™ and Plot Nodes.

Step 2 - Choose PFref and Qref values​

Choose PFref and Qref values which correspond to a "...change in setpoint of... 50% of the reactive power capability" (e.g. 50% × 0.395 × rated active power for S5.2.5.1 AAS). Note that PFref values may be in different units depending on your OEM model (e.g. radians, degrees, unitless). If required, edit the PFref and Qref Commands in the relevant PSS®E Dynamic and PSCAD™ Nodes.

tip

To achieve the same reactive power step size, the PFref step value will need to change depending on the initial active power.

Step 3 - Choose size of shunt reactive element​

For network grid voltage steps, choose the size of a shunt reactive element to be inserted at the connection point to create ±5% steps.

note

For S5.2.5.13 network studies, you need to update the following specific for your project:

  • In the PSS®E Static Nodes:
    • Set your generating system into is typical voltage/reactive power control mode based on your proposed voltage control strategy.
    • Update the Network model field in the Define simulation & Define outputs tab to the relative file path to your NEM/OPDMS tuned snapshot .sav file.
    • Update the Network model: Bus number field in the Define simulation & Define outputs tab to the bus number of your generator's connection point in the NEM/OPDMS model.
  • In the PSS®E Dynamic Nodes:
    • Set your generating system into is typical voltage/reactive power control mode based on your proposed voltage control strategy.
    • Update the Network dynamics model data field in the Define simulation tab to the relative file path to your NEM/OPDMS tuned snapshot .dyr file - or alternatively, a folder which contains all the .dyr files required for the NEM/OPDMS tuned snapshot.
    • Update the Network dynamics user models field in the Define simulation tab to the relative file path to the folder which contains all dynamic libraries for your NEM/OPDMS tuned snapshot, including the dsusr.dll file.
note

The template only includes S5.2.5.13 network tests for voltage control mode, which is typically the default control mode. Please contact us if you need these tests for other control modes (e.g. reactive power or power factor).

S5.2.5.14 Active power control​

The purpose of S5.2.5.14 is to confirm the capability of your generating system's active power control system.

Step 1 - Choose spacing between active power steps​

Choose the spacing between active power steps which is sufficient for your generating system to reach each target set point. This spacing will depend on your ramp up and ramp down control limits (e.g. expressed in MW/sec). If required, edit the following Commands:

$s_psse_ds_p_command, AT=5, VAL=0.5
$s_psse_ds_p_command, AT=15, VAL=0.05
$s_psse_ds_p_command, AT=25, VAL=1

S5.2.5.15 Short circuit ratio​

The purpose of S5.2.5.15 is to confirm the ability of your generating system to operate stably and remain connected at a specified low short circuit ratio.

S5.2.5.15 states that this requirement should be "...assessed in accordance with the methodology prescribed in the system strength impact assessment guidelines". Please refer to our template which addresses these guidelines: AEMO System Strength Impact Assessment Guidelines (Appendix B).

S5.2.5.16 Voltage phase angle shift​

The purpose of S5.2.5.16 is to confirm the ability of your generating system to avoid activating specific protection functions as a result of specific phase angle changes at the connection point.

As outlined in AEMO's draft determination submission, AEMO | Draft Determination – Efficient management of system strength | 17 June 2021, "it is inconsistent to document [specific protection systems] in the Generator Performance Standards." If this clause was consistent with S5.2, the purpose would most likely be extended to confirm the ability of your generating system to maintain continuous uninterrupted operation for specific phase angle changes at the connection point.

Step 1 - Choose voltage phase angle shift​

Choose a voltage phase angle shift depending on your relevant GPS requirements. Common requirements have been provided below. Copy and paste this text into the relevant PSS®E Dynamic and PSCAD™ Node SMIB angle playback fields.

0,          0
5,          20
15,         0
25,         -20
35,         0
45,         0

Assumptions​

  • Generally, Automatic Access Standard (AAS) is assumed for all tests and Analysis Nodes within the template.
  • Some GPS tests require a PSS®E model of the NEM (colloquially known as an 'OPDMS snapshot' in the industry). We do not provide these snapshots. You will have to provide your own pre-tuned dynamic base cases for these tests.
  • Network frequency dependency is by default disabled, but can be disabled if desired.
  • For tests which are confirming parameters which only affect a final settled value (e.g. Q(V) droop characteristic parameters, P(f) droop characteristic parameters, and Iq(V) droop characteristic parameters), these are often conducted at infinite SCR to simplify the test methodology and interpretation of results. For tests which are confirming parameters which may affect transient dynamic performance (e.g. Kp gain for the Iq(V) response), these are conducted using site-specific SCR values.

Sources​

Revision history​

  • 21 January 2025 (v1.4.20):
    • Updated descriptions in template for Nodes, Plot subtitles and file names to better describe tests.
    • Replace STYLE, TYPE= Commands with equivalent combinations of DRAW_LINE Commands.
    • Removed l_testnum references to avoid creating our own test number/references.
    • S5.2.4 Provision of information: Updated Analysis Nodes to remove duplicate checks across different clauses (e.g. don't check PSCAD™ initialization time in every GPS clause because a single failure will be shown multiple times across the analysis summary). These general checks were moved to a single under S5.2.4.
    • S5.2.4 Provision of information: Vpoc, Ppoc and Qpoc checks at 10s now compare to the value at 5s. This check is a better way of checking for a flat run.
    • S5.2.5.1: Changed the default Loop: Start Node configuration to only positive Pref values.
    • S5.2.5.3 and S5.2.5.4: Changed x-axis log scale by default for very long simulation time ride-through simulations. This will better show ride-through profiles.
    • S5.2.5.3 and S5.2.5.4: Changed the default Loop: Start Node configuration for protection verification tests to only Pmax, Q0 case. Frequency and voltage protection activation by extreme disturbances is unlikely to depend on the Ppoc/Qpoc operating condition.
    • S5.2.5.5 FRT Iq injection curve: Separate the generation of the Iq injection curve into a separate run which is conducted at infinite SCR. 'S5.2.5.5 Balanced voltage disturbances' is now only assessing time-series dynamic performance (e.g. Iq settling time), not assessing ΔIq/ΔV gain. This separation was completed to make it easier for engineers to solve one topic at a time and because the Iq injection curve does not need to be conducted at min and max SCR, whereas 'S5.2.5.5 Balanced voltage disturbances' does.
    • S5.2.5.5 FRT Iq injection curve: Include a new option for the scatter plot of ΔIq/V.
    • S5.2.5.5 FRT transition bands: Split the Plot Nodes which were calculating the LVRT and HVRT enter/exit times so that there is one per power systems software (i.e. PSS®E and PSCAD™). There was an error where the LVRT and HVRT enter/exit times were only calculated in PSCAD™ and these values were used to output the Vpoc values for both PSS®E and PSCAD™.
    • S5.2.5.5 Balanced voltage disturbances: Include scatter plots for Ppoc recovery times, Iqpoc rise times and Iqpoc settling times. Update loops to include maximum SCR and X/R ratio operating conditions (now possible that FRT Iq injection curve is a different set of tests and the additional operating conditions would not clog up the Iq injection curve).
    • S5.2.5.5 Unbalanced faults: Include scatter plots of Vp-n voltages for Vc to help show whether reactive current contribution excessively contributesto voltage rise during unbalanced faults.
    • S5.2.5.7: Included the ability to playback the network load reduction event into a SMIB model. This is completed by recording the voltage, frequency and angle response at the proposed connection point in the network case where your generating system has not yet been integrated and playing this back to your PSS®E and PSCAD™ SMIB generating system models.
    • S5.2.5.11: Separate the tests generating the P(f) droop curve into a separate run.
    • S5.2.5.11: UF and OF disturbance tests were combined into a single loop.
    • S5.2.5.13: Separate the tests generating the Q(V) droop curve into a separate run.
    • S5.2.5.13: Include tests of steps into limiters (i.e. S5.2.5.13(b)(4)(v)(B) and S5.2.5.13(c1)(3)(ii)).
  • 27 November 2024 (v1.4.19):
    • Removed extra blank subplot (was present in only some Plot Nodes).
    • Fixed template mapping issue which caused LVRT and HVRT signals to not appear on the specified sub-plots.
  • 15 November 2024 (v1.4.18):
    • S5.2.5.5: Improved network tests.
    • S5.2.5.7: Improved methodology of network tests.
    • S5.2.5.13: Improved methodology of network tests.
    • S5.2.5.13: Added missing settling time calculations on S5.2.5.13 Q reference and PF reference tests as per S5.2.5.13(c1)(3)(i).
    • Expanded documentation for S5.2.5.5, S5.2.5.7 and S5.2.5.13 to explain what changes are required from the example template to use NEM/OPDMS snapshot files.
  • 23 September 2024 (v1.4.16):
    • S5.2.5.1: Include Vpoc column in the output "GPS\Misc\S5.2.5.1 - PQ curve points.csv" and improve the plot subtitle for the output "GPS\Misc\S5.2.5.1 - PQ steps".
    • S5.2.5.4: UV ride-through playback was too harsh. It required 10 seconds at 80% Vpoc without taking into account the 2 seconds at 70%. This was updated to match AAS NER. Analysis Node 1706 "S5.2.5.4 - Under voltage ride through" had a typo referring to a "frequency disturbance" rather than a "voltage disturbance".
    • S5.2.5.5: i_iq_settling_time calculation during faults incorrectly had END_T Argument as 15 seconds. This was changed to 5.429 so that the settling time value is calculated within the applied disturbance duration. Additional Analysis Node "S5.2.5.5 - V disturbance performance" had a typo where {{i_iq_settling_time}} and {{i_iq_rise_time}} were in each other's spot. Updated incorrect subplot units for "Iq (Negative seq)" subplot.
  • 15 April 2024 (v1.4.12):
    • Updated to align with newest template Sticky Note format.
    • Removed unused Internode Variables from Plot Node 1435 and Table Node 1443.
  • 20 March 2024 (v1.4.11)
    • Added S5.2.5.1 constrained PQ capability curve tests to this template.
    • Start Nodes renamed to indicate if they are SMIB or Network-wide studies.
    • Fixed typo in S5.2.5.7 test plot title, incorrectly referenced S5.2.5.14.
    • Fixed missing internode variable in Analysis Node 1752.
  • 30 January 2024 (v1.4.9)
    • Fixed S5.2.5.3 PSS®E Static Nodes used a different POC bus voltage target between the with-generator and without-generator tests.
    • Fixed Node 1368 referenced an incorrect test type.
  • 12 December 2023 (v1.4.7)
    • Added GRADIENT commands to S5.2.5.11 and S5.2.5.13 scatter plots to automatically calculate droop characteristics.
  • 14 November 2023 (v1.4.5)
    • Removed AEMO error bands from Plot Nodes when only one power system simulation software package is being plotted.
    • Added y-axis labels on single phase voltage plots.
    • Set DISPLAY=NO on several plots to minimise overcrowding of OUTPUT commands.
    • Removed the 3 second initialisation Analysis check on studies which do not have PSCAD™ studies.