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Deep Learning for High-Impedance Fault Detection: …
HIF detection by Kalman Filtering [17] is based on tracking randomness in the current waveform. Because the small HIF current does not cause significant variations in the current waveforms seen by the relay at the substation [18], this approach exhibits low
Fault Recognition Method for Substation Equipment Based on …
This paper proposes a fault recognition method for substation equipment based on lifelong learning, which facilitates the continuous expansion to new devices and new faults. …
ANSI Standard Device Numbers & Common Acronyms
GEDigitalEnergycom 3 Device No. Description 51_2 Negative Sequence Time Overcurrent 52 Ac Circuit Breaker 53 Exciter or Dc Generator Relay 54 Turning Gear Engaging Device 55 Power Factor Relay 56 Field Application Relay 57 …
Fault detection in switching process of a substation using the …
To detect substation faults for timely repair, this paper proposes a fault detection method that is based on the time series model and the statistical process control method to …
Detecting breakdowns in capacitor voltage transformers: A …
1. Introduction Capacitor voltage transformers (CVTs) are equipment widely deployed in power grids over 110 kV, which scale down high-voltage signals into low-voltage signals with a given coefficient [1].Precisely sensing voltages in the power grid is …
An online detection method for capacitor voltage transformer …
capacitor voltage transformers (CVT) are widely used in the power system due to their good insulation and low cost. An accurate measurement performance provides An online detection method for capacitor voltage transformer based on …
A phase diagram approach to the detection and location of faulty capacitor units in A 115-kV capacitor …
The protection of traditional high voltage capacitor banks relies on an unbalance relay which operates when an internal fuse is blown. However, the unbalance relay cannot indicate cause or position of the fault. Thus, an operator wastes time and human resources investigating the fault issues. To address this issue, a method to locate …
High-impedance fault detection in electrical power …
High-impedance faults (HIFs) in electrical power distribution systems produce a very random, non-linear and low-magnitude fault …
Transient inrush current detection and classification in 230 kV shunt capacitor …
The substation shunt capacitor bank is the model shown in Fig. 1 []. A four-step capacitor bank rated at 72 Mvar, 230 kV was used to investigate the high-transient inrush current and to classify the possible cases of …
High impedance fault detection method for distribution networks under …
New HIF method for distribution networks with the presence of non-linear loads. • Online monitoring of 3 rd harmonic phase angle sample-by-sample for fault detection. Requires only a single measurement point on the substation. • Detection method not affected by
Fault Detection, Classification and Localization Along the Power …
Distributed energy generation increases the need for smart grid monitoring, protection, and control. Localization, classification, and fault detection are essential for addressing any problems immediately and resuming the smart grid as soon as possible. Simultaneously, the capacity to swiftly identify smart grid issues utilizing sensor data and …
Fault detection in switching process of a substation using the …
To detect substation faults for timely repair, this paper proposes a fault detection method that is ... Voltage transformers faults, capacitors faults, and bus-bars faults can cause long-term ...
Capacitor and filter bank
Internal faults are caused by failures of capacitor elements composing the capacitor units, and units composing the capacitor bank. Other faults inside the bank can be a flashover within the rack (short circuit over a single or multiple series groups of units of the same phase) and rack phase-to-phase and phase-to-earth faults.
Behaviour analysis of H-bridge high-voltage capacitor banks fault on 230-kV substation …
Currently, the 230-kV capacitor bank in the substation is still detecting fault by using human resources to manually collect data from the related relay. So, there is a waste of maintenance time. To curb the serval drawbacks that are …
High impedance fault detection method for distribution networks under …
Online monitoring of 3 rd harmonic phase angle sample-by-sample for fault detection. • Requires only a single measurement point on the substation. • Detection method not affected by system characteristics or fault location. • Overall detection rate of …
Thermal Fault Diagnosis of Electrical Equipment in …
To prevent major emergency accidents in substations, it is of great significance to study the segmentation of abnormal temperature regions and thermal fault diagnosis based on infrared images of electrical equipment …
Fault detection in switching process of a substation using the …
To detect substation faults for timely repair, this paper proposes a fault detection method that is based on the time series model and the statistical process control method to ...
Fault detection, classification and location for transmission lines and distribution systems…
A comprehensive review on the methods used for fault detection, classification and location in transmission lines and distribution systems is presented in this study. Though the three topics are highly correlated, the authors try to discuss them separately, so that ...
A shunt capacitor detection method based on intelligent substation
Focused on the problems that capacitor branches parameters cannot be calculated with unknown neutral point voltage, a shunt capacitor detection method based on intelligent substation is proposed in this paper. Using the information from intelligent substation, basic equation of shunt capacitor is firstly constructed in consideration of capacitor …
Fault location in power grids using substation voltage magnitude …
Our method estimates the distance and faulty branch by measuring the difference in fault voltage magnitude at the substation and comparing it with simulated …
A shunt capacitor detection method based on intelligent substation
Simulation results show that this method can alarm the fault phase capacitor correctly, not affected by the parameters initial deviation and external faults, and greatly improved the reliability of the shunt capacitors operation. Focused on the problems that capacitor branches parameters cannot be calculated with unknown neutral point …
Deep Learning-Based Algorithm for Internal Fault Detection of Power Transformers during Inrush Current at Distribution Substations
The reliability and stability of differential protection in power transformers could be threatened by several types of inferences, including magnetizing inrush currents, current transformer saturation, and overexcitation from external faults. The robustness of deep learning applications employed for power system protection in recent years has …
A shunt capacitor detection method based on intelligent substation
Simulation results show that this method can alarm the fault phase capacitor correctly, not affected by the parameters initial deviation and external faults, and greatly improved the …
Fault detection in switching process of a substation using the …
To detect substation faults for timely repair, this paper proposes a fault detection method that is based on the time series model and the statistical process control method to analyze...
An online detection method for capacitor voltage transformer with excessive measurement error …
1. Introduction Cross-regional consumption of clean energy has transformed the electricity market in China and Europe [1].The sharp rise of energy trade demands accurate power metering, whose realization is based on accurate measurement of grid voltage [2].CVT ...
Design and protection of transmission capacitor banks connected to gas-insulated substations
Due to the opening or closing of circuit breakers and disconnect switches in Gas Insulated Substations (GIS), Very Fast Transient Over-voltages (VFTO) are generated. This paper describes the 500 kV and 750 kV GIS of power system. The variations of VFTO ...
Behaviour analysis of H-bridge high-voltage capacitor banks fault …
An actual 230-kV substation of EGAT was used for the prototype of the study system in order to reduce maintenance time from manual detecting fault by using …