SO-52v11-eMW, SO-52v11-PMU, SO-52v21-PC — 110–400 kV breaker module, PMU and arc suppression coil controller

Description

The SO-52v11-eMW breaker module controls the circuit breaker with auto-reclosing (AR) or manually. During closing, a synchro-check module can operate, which closes the breaker at the most favorable moment according to the current voltage, phase and frequency conditions. Functions: AR, three-phase synchro-check, monitoring of voltage transformer (VTS) and current transformer (CTS) circuits, programmable logic (LGC), event recording, technical diagnostics and user communication. Standardized protocols give full operation with higher-level systems of different vendors. Information on the tests of the SO-52v11-eMW carried out by the national operator PSE is published on the manufacturer's website.

The design is modular, in a cassette case with a degree of protection of IP50, and the number of digital input and output modules depends on the bay type. A typical configuration includes the MPA-408-21 communication module for measurements, calculations and network or serial communication, the MPL-608 measurement module, MWS-208 digital input modules for 220 V DC, MSS-328 output modules (power outputs of up to 5 A at 220 V DC) and MSS-618 for indirect control of primary equipment, signaling and bay, inter-bay and station interlocking, as well as the MZA-410 power supply unit.

The SO-52v11-PMU works as a phasor measurement unit in switchgear bays of all voltage classes for WAMS systems and monitoring of transient conditions. It determines the phasors of 4 currents and 6 voltages at a rated frequency of 50 Hz, the frequency and ROCOF according to IEEE C37.118.1-2011 for classes M and P. Data are transmitted to the PDC concentrator under IEEE C37.118.2-2011 at 10, 25 or 50 frames per second. The PMU has from 3 to 5 Ethernet ports 100Base-TX or 100Base-FX and 2 RS-232/485 ports, and time is synchronized by PTP with an accuracy of 1 µs.

The SO-52v21-PC regulates an arc suppression coil (Petersen coil) in MV networks and compensates the capacitive current of the network. In a single-phase earth fault the residual current is then small, the arc extinguishes quickly, and a transient fault is cleared without a supply interruption. Regulation is performed by a set residual current or by the degree of detuning with the CIF algorithm. In the dual-core processor the DSP collects and processes data, and the ARM runs the protocols and logic. The controller has 16 digital inputs, 8 digital outputs, 1 voltage input and 3 current inputs, a recorder in COMTRADE format, communication under DNP3.0 and PN-EN 61850, and natural cooling without fans. Typical sites are breaker bays of 110–400 kV outdoor switchgear, WAMS systems and 110/MV substations with compensated neutral.

Technical specifications

Customs codes

Codes are for reference: the final code is determined at declaration for the specific model.

Questions and answers