NDLI: Identification of current transformer saturation based on the improved gradient mathematical morphology method

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AC and DC fault ride through hybrid MMC integrating wind power

AC excitation control strategy of variable speed pumped storage units based on active disturbance rejection control

Abnormality in power system transient stability control of BESS/STATCOM

Accuracy improvement of remaining capacity estimation for energy storage batteries

Accurate fault location of complex distribution network with distributed generators

Active power control algorithm for distributed photovoltaic power generation cluster based on operating efficiency of photovoltaic power generation unit

Adaptation virtual inertia control strategy of DFIG and assessment of equivalent virtual inertia time constant of connected power system

Adaptive protection scheme for distributed systems with DG

Adaptive voltage protection scheme based on wide area information

Advanced control strategy and its controllable area for doubly fed wind farm integrated into power systems with VSC-HVDC transmission under grid fault

Advanced design of microgrid interface for multiple microgrids based on MMC and energy storage unit

Advanced microgrid and its multi-objective regulation strategy for shore supply

Air conditioner fast dispatching model based on load aggregator and direct load control

Analysis and control strategy of unbalanced power in MMC-HVDC grid

Analysis and modelling regarding frequency regulation of power systems and power supply–demand-control based on penetration of renewable energy sources

Analysis for distribution network on hosting capacity of distributed wind turbines considering additional income under procedure conditions

Analysis method and empirical research on economic benefit of large-scale consumptive power grid investment

Analysis method of feeder partition capacity considering power supply security and distributed generation

Analysis of HDT control systems

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Analysis of pole-to-pole fault characteristics of flexible DC system and design of current-limiting device

Analysis of short circuit characteristic of hybrid wind farm group based on artificial short circuit test

Analysis of starting element for transmission line to wind farm integration

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Analysis of the HVDC grid's influence on short-circuit current level of AC system

Analysis of the impact of distributed generation on grounding method of distribution network

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Application of MMC-UPFC in the 500 kV power grid of Suzhou

Application of multi-criteria decision analysis tool for design of a sustainable micro-grid for a remote village in the Himalayas

Application status of XLPE insulated submarine cable used in offshore wind farm in China

Architecture and security protection scheme for distributed new energy public service platform with hybrid cloud system

Average value model of grid side converter in PMSG for system-level studies

Based on STATCOM direct current full-order terminal sliding mode control

Battery management system for Li-ion battery

Bi-level planning model for optimal allocation of WT–PV–ESS in distribution networks

Bi-level two-stage stochastic SCUC for ISO day-ahead scheduling considering uncertain wind power and demand response

Bidding method for wind generation company in nodal power market

Bidding strategy of electricity market considering network constraint in new electricity improvement environment

Bifurcation analysis of the islanded micro-grid with constant power loads

Bilateral collaborative operation optimisation model in integrated multi-energy system

Build-up steady-state analysis of wind-driven self-excited induction generators

Capacity configuration optimisation for stand-alone micro-grid based on an improved binary bat algorithm

Clustering-based optimisation for maximum wind energy extracting of large scale wind farm

Collaborative control strategy of power electronic transformer and fault current limiter in DC microgrid

Combination strategy of DC power flow controller for multi-terminal HVDC system

Combined active and reactive power control strategy to improve power system frequency stability with DFIGs

Comparative study on primary frequency control schemes for variable-speed wind turbines

Comparison of EV smart charging strategies from multiple stakeholders' perception

Comparison of centralised and distributed battery energy storage systems in LV distribution networks on operational optimisation and financial benefits

Comparison of centralised and distributed energy storage configuration for AC/DC hybrid microgrid

Compound frequency modulation strategy of DFIG-based wind turbines dealing with stator winding inter-turn short-circuit fault

Control and operation of a hybrid HVDC integrating wind farm based on SB-MMC and LCC

Control for offshore wind power integration based on modular multilevel converter

Control of grid-connected converter based on model prediction control under unbalanced grid voltage

Control strategy for wind power integration base on energy demand respond and distributed energy storage

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Cost comparison of AC and DC collector grid for integration of large-scale PV power plants

Cost–benefit analysis of pumped hydro storage using improved probabilistic production simulation method

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Cross-coupling over frequency and sequence in impedance modelling of grid-connected inverter

DC STATCOM in multi-terminal DC distribution power system

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DC–DC autotransformer with un-interrupted operating capability during DC fault

DG integration capacity analysis under harmonic constraints

DG planning in stand-alone microgrid considering stochastic characteristic

Damping characteristics of sub-synchronous torsional interaction of DFIG-based wind farm connected to HVDC system

Decentralised method for solving multi-area stochastic dynamic economic dispatch problem

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Demand response measures and its quantitative effects in promoting renewable energy accommodation in high proportional renewable energy scenario

Design and multi-object optimisation of axial flux interior PMSM for EV and HEV applications

Design and operation of DSTATCOM for power quality improvement in distribution systems

Design and research of modular permanent-magnet DC generator based on magnetic integrated transformer for offshore wind farms

Design of a novel voltage regulating distribution transformer with a power electronic-assisted booster system

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Development status and demand analysis of International Electrotechnical Commission PV standards

Directional pilot protection based on fault current for distribution network with Distributed Generation (DG)

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Dynamic stability of weak grid connection of large-scale DFIG based on wind turbines

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Emulating the features of conventional generator with virtual synchronous generator technology: an overview

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Energy management system controller for a rural microgrid

Enhanced AC voltage and frequency control on offshore MMC station for wind farm

Equivalencing-tracking-based method for incorporating distributed energy resources in transmission system economic dispatch

Equivalent modelling of wind farm for small-signal stability analysis in weak power system

Evaluating the capacity of power and energy balance for cascaded H-bridge multilevel inverter using different PWM techniques

Evaluation of solar irradiance on inclined surfaces models in the short-term photovoltaic power forecasting

Experimental analysis of noise and vibration for large brushless doubly fed machines

Exploration of a DC wind farm integrated by variable-speed squirrel cage induction generator (SCIGs)

Fast optimal power allocation algorithm for multi-terminal AC/DC hybrid grids with wind power integration: Volume 2017, Issue 13, Jan (2017)

Fault characteristics of full power inverted sources and its short-circuit current calculation model

Fault diagnosis of PV array based on optimised BP neural network by improved adaptive genetic algorithm

Fault diagnosis of wind turbine planetary gearbox based on order analysis and divergence index

Fault recovery for distribution network with distributed generation

Flexible control strategy for fuel cell–supercapacitor power system

Framework planning of active distribution network considering active management

Frequency characteristics of East China Power Grid after bipolar locking of ultra-high voltage direct current (UHVDC)

Frequency control capability of wind turbine under different operation status

Frequency control framework of power system with high wind penetration considering demand response and energy storage

Generation method for the PV power time series combining the decomposition technique and Markov chain theory

Global MPPT algorithm with coordinated control of PSO and INC for rooftop PV array

HVDC topology structure using existing ac cable lines for integrating renewable energy sources

Harmonic control optimisation model considering power generation of microgrid

Harmonic influence of traction locomotive on hybrid DC asynchronous interconnection project

Harmonic suppressing control strategy for MMC–HVDC

Harmonic transfer characteristics of MMC-HVDC systems

Heuristic algorithm for the problem of vessel routing optimisation for offshore wind farms

Hierarchical control strategy based on bidding mechanism in active distribution network

High-accurate estimation method of sub-synchronous and super-synchronous harmonic parameters on PMU

Hybrid cooperative control method for microgrid with large generation or load fluctuations

Hybrid transient simulation platform for interconnected transmission and distribution system based on powerfactory and PSASP

Identification of current transformer saturation based on the improved gradient mathematical morphology method

Identification of the photovoltaic model parameters using the crow search algorithm

Identification of vulnerable lines in large power grid based on FP-growth algorithm

Impact analysis of DFIG location on low-frequency oscillations in power system

Impact of PMSG on SSR of DFIGs connected to series-compensated lines based on the impedance characteristics

Impact of demand response on capacity credit of renewable distributed generation

Impact of fault-ride-through strategy on dynamic characteristics of photovoltaic power plant

Impact of large-scale photovoltaic generation integration structure on static voltage stability in China's Qinghai province network

Impact of series compensation on operation performance of large-scale PV plants

Impact on SSR of wind farms connected to series-compensated lines from the different structures of power grid

Implementation and value of power hardware in the loop testing bed for wind turbines integrated into grid

Improved BP neural network algorithm to wind power forecast

Improved active and reactive power control for symmetrical bipolar MMC-HVDC systems during DC side PTG fault

Improved extreme-scenario extraction method for the economic dispatch of active distribution networks

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Improved modulation method of modular multilevel converter

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Improvement of HVDC commutation failure response based on compound phase-shifting control

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Inbreeded GA for optimal distributed resource allocation in distribution systems

Increase the capacity of distributed energy resource by multi-dimensional multi-resolution model

Inertial and primary frequency response model of variable-speed wind turbines

Inertial response analysis of PMSG-based WECS with VSG control

Influence of back-to-back VSC-HVDC project on the operation characteristics of Hubei power grid

Influence of cogging force on solar thermo acoustic generation systems

Influence of regional load on subsynchronous resonance of wind farm-series compensated power transmission system

Investigating SSO risks of large-scale photovoltaic generation with the series compensated transmission lines

Joint maintenance scheduling of the municipal solid waste incineration power plant and connected power system devices

Large disturbance stability evaluation of interconnected multi-inverter power grids with VSG model

Linear demagnetizing strategy of DFIG-based WTs for improving LVRT responses

Load frequency control in multiple microgrids based on model predictive control with communication delay

Locating optimal support generation units based on polynomial approximation of post-contingency static stability and security regions boundaries

Long-term reliability evaluation for small hydro-power generations based on flow runoff theory

Look-up table approaches for TCSC impedance control considering thyristor conduction characteristic

Low voltage ride-through capability enhancement of grid-connected permanent magnet synchronous generator driven directly by variable speed wind turbine: a review

Maximising wind generation through optimised operation of on-load tap changing transformers in active distribution networks

Maximum energy yield oriented turbine control in PMSG-based wind farm

Mechanism and characteristic analyses of subsynchronous oscillations caused by the interactions between direct-drive wind turbines and weak AC power systems

Mechanism of sub-synchronous interaction caused by inter-harmonics in DFIG

Method for diagnosis of on-load tap changer based on wavelet theory and support vector machine

Method of adapting to grid recovery in extreme weather conditions

Method of calculating the maximum transmission capability with unified power flow controller

Method of eliminating high frequency resonance of DFIG system connected to weak grid

Method to determine spinning reserve requirement for a grid with large-scale wind power penetration

Method to determine the maximum generation capacity of distribution generation in low-voltage distribution feeders

Method to evaluate comprehensive economic benefit of hybrid wind power–pumped hydro storage considering the carbon emission trade

Method to suppress sub-synchronous oscillation of DFIG-based wind farms based on virtual impedance

Microgrid multi-source coordination optimal control based on multi-scenarios analysis

Mixed-integer second-order cone programming taking appropriate approximation for the unit commitment in hybrid AC–DC grid

Modal analysis of a grid-connected DFIG-based WT considering multi-timescale control interactions

Model and control of fuel supply systems of hydrogen/oxygen fuel cell

Model predictive control considering scenario optimisation for microgrid dispatching with wind power and electric vehicle

Modelling and control of a VSC medium-voltage DC distribution network with DFIG wind farm

Modelling and control of doubly fed variable-speed pumped storage units for grid power regulation

Modelling and simulation of the photovoltaic power station considering the LVRT and HVRT

Modelling and validating photovoltaic power inverter model for power system stability analysis

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Models for microbial fuel cells: a critical review

Modified R–L model-based protection for VSC-DC distribution lines

Modified elephant herding optimisation for economic generation co-ordination of DERs and BESS in grid connected micro-grid

Modified modulation strategy of MMC for wind farm integration

Multi-level switch-capacitor DC–DC converter: variable voltage gain optimisation issues

Multi-machine equivalent model parameter identification method for double-fed induction generator (DFIG)-based wind power plant based on measurement data

Multi-objective reactive power optimisation approach for the isolated grid of new energy clusters connected to VSC-HVDC

Multi-objectives combined electric heating dispatch model of wind power accommodation with heat storage device

Multi-rate electromagnetic transient simulation of large-scale power system based on multi-core

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New scheme of UHVDC transmission line protection based on Chebyshev window filter

Numerical stability analysis of PMSG-based wind energy conversion system: a simple example of drive system

Ocean Energy Comprehensive Utilization System of Water-electricity Cogeneration

On-line decentralised economical dispatch for power system with highly penetrated uncertain renewables

One-step MPPT method based on five-parameter model of PV panel

Online electromechanical and electromagnetic hybrid simulation system

Operation and coordination control of a DC micro-grid incorporating all-DC wind farm

Operation risk assessment of distribution network considering time dependence correlation coefficient

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Optimisation procedure for designing a magnetic gear

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Optimised recovery strategy for microgrid with distributed generations

Output characteristics of LCC-S compensation network and its optimal parameters design in IPT system

Output power smoothing of grid-connected permanent-magnet synchronous generator driven directly by variable speed wind turbine: a review

Over-voltage modelling and simulation analysis of offshore wind farm

PCC voltage power quality restoring strategy based on the droop controlled grid-connecting microgrid

PLL effect on subsynchronous torsional interaction with VSC-HVDC

PPSO method for distribution network reconfiguration considering the stochastic uncertainty of wind turbine, photovoltaic and load

Partial discharge of white noise suppression method based on EEMD and higher order statistics

Phasor model of full scale converter wind turbine for small-signal stability analysis

Phasor model simulation of a grid integrated variable speed pumped storage system

Photovoltaic grid-connection composite control strategy in microgrid

Planning of electric vehicle charging station based on queuing theory

Positive and negative sequence control of DFIG based wind turbines and its impact on grid voltage profile concerning converter control capability

Power Supply Company purchase’ portfolio optimisation considering electric vehicle charging load forecasting

Power grid planning based on differential abandoned wind rate

Power requirement and control characteristics of energy storage equipment in a microgrid operating in island mode

Prediction Method of PV Output Power Based on Cloud Model

Probabilistic forecast for aggregated wind power outputs based on regional NWP data

Protection of micro-grid systems: a comprehensive survey

Protection principle for MMC-HVDC DC lines based on boundary signals

Pumped-storage power generation system based on wave energy

Quantitative method to pre-assess vulnerability for microgrid based on probability theory

Reactive Power Optimization Dispatch Strategy in Distribution Network with Distributed Generators

Reactive power control strategy of DFIG-based wind farm to mitigate SSO

Reactive power optimisation design and fault ride through of MMC-PLUS

Reactive power optimisation of distribution network with dispersed wind farm

Reliability evaluation method for distribution network

Reliability evaluation of PV power systems with consideration of time-varying factors

Renewable energy integration capacity assessment in regional power grid based on an enhanced sequential production simulation

Representational learning approach for power system transient stability assessment based on convolutional neural network

Research and implementation of outage plan system for reliability and clean energy consumptive power constraint

Research and simulation of control strategy for multi-terminal flexible high-voltage DC transmission system with renewable energy access

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Research of reactive power control strategy to reduce the reactive power exchange of AC and DC power grid

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Robust optimal shunt dispatch method in wind farm integration area

Robust optimisation for AC–DC power flow based on second-order cone programming

SSCI detection and protection in doubly fed generator based on DTFT

SSO damping in DFIG-based wind farms integrated by a hybrid series compensator

SSO suppression method and effectiveness of STATCOM in an identical multi-machine system

Scheme to improve the load characteristics in DC distribution networks based on optimal allocation of energy storage systems

Selective harmonic suppression strategy by SAPF in power distribution system

Shell circulating current and transient ground potential rise in 220 kV GIS

Short-circuit current analysis of grid-connected LCL VSC by operational inductance

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Short-term power-forecasting method of distributed PV power system for consideration of its effects on load forecasting

Siloxane injection technology for extending the lifetime of the operating cable

Simplified method of doubly fed induction generator

Siting and sizing method of energy storage system of microgrid based on power flow sensitivity analysis

Situation awareness of power system based on static voltage security region

Small signal stability analysis of paralleled inverters for multiple photovoltaic generation units connected to weak grid

Solution of voltage stability assessment for complicated power system incorporating wind power

Solution of wind turbine blade Doppler and its characteristic analysis

Stability of grid connected system of two types of wind turbines with UPFC

Stator current vector control strategy of doubly fed induction generator using proportional–resonant regulators

Stochastic expansion planning of interconnected distribution networks with renewable sources considering uncertainties and power transfer capability

Strategy to smooth tie-line power of microgrid by considering group control of heat pumps

Strategy to stabilise power fluctuation of distributed renewable energy in combined heat and power micro-grid

Study on Electromechanical Transient-Electromagnetic Transient Hybrid Simulation of Photovoltaic Grid-connected System

Study on charge and discharge control strategy of supercapacitor in photovoltaic system

Study on detection of blade imbalance for DFIG WTS based on spectrum analysis of Hilbert modulus

Study on online under-frequency load shedding strategy with virtual inertia control of wind turbines

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Study on system commissioning test and project application of Lingzhou to Shaoxing UHVDC transmission project

Study on the dynamic reactive power characteristics of MMC-MTDC for wind farm integration

Study on the stability mechanism of the sending-side three-machine-group system after multiple HVDC commutation failure

Study on tolerance capability of converter typed load for voltage fluctuation in system planning

Sub-synchronous oscillation analysis of complicated power grid incorporating wind farms with different types

Sub-synchronous torsional interaction with VSC-HVDC affected by feed-forward compensations in current controllers

Sub/super-synchronous harmonics measurement method based on PMUs

Suppression method of parallel-damping controller for DFIG

Suppression of synchronous resonance for VSGs

Synergistic dispatch of generation and network in wind power integrated power system

Techno-economic analysis of a PV–wind–battery–diesel standalone power system in a remote area

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Three-phase dynamic phasor model of HVDC systems

Transient reactive power characteristics of HVDC during commutation failure and impact of HVDC control parameters

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Virtual resistor circuit-based control strategy of STATCOM during network unbalance

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Weather type partition method considering sequential features in photovoltaic forecasting

Whale optimisation algorithm for photovoltaic model identification

Wind energy prediction with LS-SVM based on Lorenz perturbation

Wind farm HVRT capability improvement based on coordinated reactive power control strategy

Wind farm aggregation method based on motion equation concept: a case study

Wind power curtailment sequence characteristic analysis

Wind power fluctuation characteristics of Three North regions based on clustering algorithm

Wind power fluctuation mitigation based low-frequency oscillation

Wind speed optimisation method of numerical prediction for wind farm based on Kalman filter method

Wind turbine model validation based on state interval and error calculation

‘HVDC optimisation’ – driving down the cost of large-scale offshore wind

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Identification of current transformer saturation based on the improved gradient mathematical morphology method

Content Provider	IET Digital Library
Author	Duan, Jian dong Lei, Yang Li, Hao
Abstract	A protective current transformer (CT) is essential to accommodate protection relays while the saturation of the CT may severely impact the security of protective relays. The saturation detection is the first step for activating procedures to ensure the satisfactory performance of the relay system. This study presents a saturation detection method based on mathematical morphology. The detection method involves the secondary current data as the input in a sliding data window and a noisy filter as the must step for morphological wavelet detection. Then the proposed extended sine form of the structural element is used for shaping the saturation detecting signals. To verify the practicality and effectiveness of the method, dynamic large CT tests, up to 48 kA, are carried out, particularly. The test aims at the P class CT installed in the 330/110 kV substation and the simulating current ranging from 6 to 48 kA. More discussions are simulated in the 330 kV substation system based on RT-LAB to inspect the noise-repressing and saturation detect abilities. The experimental data and simulation results show that the proposed method could accurately detect the saturation of the CT and adapt to the noise circumstance of the test.
Starting Page	1050
Ending Page	1054
Page Count	5
Volume Number	2017
e-ISSN	20513305
Issue Number	Issue 13, Jan (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/joe/2017/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/joe.2017.0489
Journal	The Journal of Engineering
Publisher	The Institution of Engineering and Technology
Publisher Date	2017-01-01
Access Restriction	Open
Rights License	Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Subject Keyword	Current 6 KA to 48 KA Current Transformer Saturation Identification Current Transformers Filtering Method in Signal Processing Filtering Theory Gradient Method Improved Gradient Mathematical Morphology Method Interpolation And Function Approximation Mathematical Morphology Morphological Wavelet Detection Noise-repressing Ability Noisy Filter Numerical Analysis Power System Protection Protection Relay Relay Protection Relay System RT-LAB Saturation Detect Ability Saturation Detection Method Secondary Current Data Signal Detection Sliding Data Window Substation System Substations Transformer And Reactors Voltage 330 KV
Content Type	Text
Resource Type	Article

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