VECTO System accuracy and compliance:

1. High-Resolution Monitoring: The VECTO 3 samples data at a rate far exceeding 20 times per second, surpassing the requirements for monitoring even the fastest FCAS events.
2. Precise Frequency Measurement: With an intrinsic uncertainty of less than 0.01 Hz, VECTO exceeds the precision necessary for accurate frequency control.
3. Synchrophasor accuracy and speed: Simultaneous compliance with both IEEE C37-118 Class P (Protection Class) & Class M (Measurement Class) solves the accuracy and speed of frequency calculation requirements, which are critical for effective FCAS metering. There is no need to select between Class P & Class M Class performance. These standards ensure that synchrophasors can provide the necessary data accuracy and timeliness needed for robust grid management and ancillary services.
4. Comprehensive Event Recording: VECTO records data for an extended period before and after fault detection, enabling in-depth analysis of grid events and supporting compliance with reporting requirements.
5. Billing Class Metering: All metered data complies with IEC 62053-22 Class 0.2S standards, ensuring precise billing data for FCAS claims. Using IEC62053-22 Class 0.2S meters ensures that the data used for billing and FCAS claims is highly accurate, which is essential for financial transactions and regulatory compliance.

In Australia, AEMO has specified a Measurement Range of Power Flow Measurements of ≤50 ms for Very Fast FCAS. This means that the power flow measurements must be sampled at a rate of at least 20 times per second (1 sample every 50 milliseconds) to be eligible for the Very Fast FCAS markets.

The VECTO measurement devices exceed these requirements with a sampling rate of 20 ms.

In addition, AEMO specifies a “Local Frequency Measurement Range” that includes the following requirements:

• Range: The range must be at least that specified in the Operational Frequency Technical Brief (OFTB)
• Intrinsic Uncertainty: The intrinsic uncertainty must be ≤0.01 Hz for Very Fast FCAS and ≤0.02 Hz for other FCAS types
• Resolution: The resolution must be ≤0.0025 Hz for Very Fast FCAS and ≤0.01 Hz for other FCAS types

These specifications ensure that the local frequency measurements are accurate and reliable for the purposes of Frequency Control Ancillary Services (FCAS) in the Australian National Electricity Market (NEM). The VECTO measurement devices exceed these requirements by an order of magnitude.