Variable Digital Filter Response Time in a Digital Distance Relay
This paper will investigate the effect of digital filtering on the operating time of a generic digital distance relay. Two popular filtering approaches will be considered: the Cosine Filter and the Fourier Filter.
A New Digital Filter Using Window Resizing for Protective Relay
This paper presents the theory, implementation, laboratory test results, and a field case example of a new filtering method for protective relaying based on window resizing.
Societal and technology trend report
Next, this framework is applied to two representative line-protection schemes – line distance protection and line differential protection – for quantitative evaluation under PEDG conditions.
DIGITAL COMMUNICATIONS FOR RELAY PROTECTION
Integrated Services Digital Network (ISDN) and Digital Subscriber Line (DSL) technologies, designed for the telecommunications industry, show promise for relay applications due to increased speed and
Frontiers | Research of the system-on-chip-based relay protection
By integrating various intellectual property (IP) cores into the FPGA, a system-on-chip with complex functions and high reliability can be realized. System-on-chip (SoC)-based relay
FILTERING REQUIREMENTS FOR DISTANCE RELAYS
In this discussion, we first identify filtering requirements or criteria for different relays. We then limit the discussion to relays needing precise measurements of the system- frequency component of the
Phasor Estimation of Transient Electrical Signals Using Modified
When one converts from analogue to digital protection systems, there are new issues and opportunities. Digital relays can achieve more, are more accurate, and can achieve more than one
Dynamic phasor-driven digital distance relays protection
This paper describes an in-depth signal processing analysis of the second-order Taylor-Kalman-Fourier (T 2KF) filter as input signal to a phase comparator in digital distance relay.
Fourier and Walsh digital filtering algorithms for distance protection
In the present paper, a comparative evaluation of different digital filtering algorithms for distance protection is performed. An evaluation method is proposed, which gives a comprehensive information
Research of the system-on-chip-based relay protection technology
The relay protection SoC usually uses a relatively small FPGA, which is convenient for processing the data stream (data communication, filtering, etc.) of the chip.
Digital signal processing (DSP) and protection
While the fundamental principles remain the same, as already mentioned, new ways of extracting relaying information from transducer signals are now possible. The first comprehensive survey of the
Implementation Of Distance Protection Scheme Using Advanced
Advancements in digital technology have allowed relay manufacturers to include more and more relay functions within a single hardware platform. This paper presents digital power system protection
Relay Filters and Aliasing Effects
The document discusses the basic components and design of digital relays. It describes anti-aliasing filters, amplitude and phase response, and compares
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