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This webinar focuses on the SEL-735 Power Quality and Revenue Meter with a color touchscreen display. During the webinar, you will learn how the display simplifies meter setup, data access, troubleshooting, and testing. We will provide examples of how…
This webinar focuses on the SEL-400G Advanced Generation Protection System and how it can be applied to protect generators of all sizes and types, including hydro, pumped-storage hydro, steam turbine, and combustion gas turbine generators. During the …
This recorded technical presentation provides information on the different methods used by SEL relays to track down faults on transmission lines, the pros and cons of each method, how to choose the best method based on application, and how to manually…
This recorded technical presentation provides information on directional overcurrent elements, mho distance elements, and pilot protection, including DCB, POTT, and line current differential.
In this webinar, we focus on the SEL-2411P Pump Automation Controller, the hardened, SCADA-ready solution from SEL that is designed specifically to address lift station challenges. During the webinar, you will learn how the SEL-2411P can assist you in…
This recorded technical presentation provides information on common serial, fiber optics, Ethernet, and communications architectures. This presentation provides a basic introduction to communications for participants not familiar with various physical…
Join us for a recorded technical presentation where you will learn about a basic SEL Real-Time Automation Controller (RTAC) setup for a substation, including the initial setup out of the box; acSELerator RTAC SEL-5033 Soft…
This recorded technical presentation provides information on engineering a better network, increasing performance over traditional Ethernet networks, and strengthening the cybersecurity of substation and industrial critical networks. Software-defined …
Through analysis of event reports recorded by relays, this paper will present several examples of settings that led to unintended operation of distribution protection, including transformer delta-winding residual overcurrent protection, transformer high-voltage phase overcurrent protection, and others.
In the interest of reducing transformer differential misoperations, we share in this technical paper practical lessons we have learned through experience with commissioning and relay event report analysis.
This paper analyzes real-world event report data in the interest of uncovering valuable lessons for setting and commissioning generator relays.
This paper investigates several real-world events with data from both motor starting reports and event records. The data demonstrate the value of having devices capable of recording motor data during starts and fault events and of capturing and reviewing such data for the purpose of determining root cause.
This paper discusses how to use event data (voltages, currents, and fault location) from relays at two ends of a transmission line to calculate positive-, negative-, and zero-sequence line impedances. Impedances calculated from real event data can be used to validate relay settings and short-circuit models.
In the interest of reducing transmission line relay misoperations, this technical paper shares practical lessons learned through experience analyzing transmission line relay event reports.
In this paper, the effect of breaker pole scatter on quadrilateral ground distance elements is investigated using a simple two-source power system with two short transmission lines. A case study is included.
This paper presents a customized methodology for relay system selection.
This paper describes a photovoltaic (PV) plant control system in the field, its operation, and the practicality of solving challenges associated with interconnecting large utility-scale PV installations with the bulk market.
This paper discusses the available technologies in communications, synchrophasors, and monitoring. Examples of small and large systems are described while discussing the types of contingencies monitored. This paper considers a large triple modular redundant subcycle RAS that manages four 530 MW generators and multiple high-voltage transmission circuits.