về hệ thống WAM và bản ghi sự cố về hệ thống FRs đặt tại A0/A3 độc lập và tin cậy;
- Đối với chức năng đo gúc pha phải đỏp ứng theo tiờu chuẩn IEEEC37.118;
- Đối với chức năng đo chất lượng điện năng phải đỏp ứng theo tiờu chuẩn
IEC 61000 or EN 50160.
3.2.3.3. Thụng số kỹ thuật của thiết bị ghi sự cố và đo gúc pha (FR/PMU)
I. FR composition and characteristic
No Name of required item Requirements (tham khảo)
Catalogue Yes
Constructor (based processor) Digital or numerical Consist of non rotating part only Yes
Integrated equipment (function)
Fault and Disturbance and Continous Recorder, Sequence-of-event Recorder : Yes
Have the capability of measuring the phasor that fully compliant with IEEE C37.118 standard and power quality that fully compliant with IEC 61000 or EN 50160: Yes
- 03 phases and residual current waveforms;
- 03 phases and residual voltage waveforms;
- Others (computed channels).
Yes Yes
P, Q, f, R, X, Sequence component of U, I (Positive, negative and zero sequence) Disturbance recorder: - Frequency; - Active power; - Reactive power; - Voltage; - Current. Yes Yes Yes Yes Yes Continuous recorder: - Frequency; - Active power; - Reactive power. - Voltage; - Current. Yes Yes Yes Yes Yes Sequence of event recorder:
- Via hardwire;
- Via protocol (GOOSE MESSAGES)
Yes Yes PMU with standard measured values Yes Have the capability of upgrading the software only for measuring the phasor that fully compliant with IEEE C37.118 standard
Yes
Have the capability of upgrading the software only for measuring the power quality that fully compliant with IEC 61000 or EN 50160 standard
Yes
Fault locator Travelling wave or impedance
Power quality recorder IEC 61000 or EN 50160 Communication ports:
- Ethernet port
Yes with the number of ports have to ensure to send the records to MS and Phasor to PDC (in case integrated PMU function in Fault recorder device) separately and reliability.
Internal crystal controlled clock Yes
Hard disk capacity ≥ 5GB
Memory and storage Non-volatile Shall have provisions for connection to
Protection management system Yes