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Investigation of the dynamics of a pulsed phase-shift automatic frequency control system

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Radiophysics and Quantum Electronics 1972年第10期15卷 1180-1186页

作者： Makarov, A.K.

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ERCOT frequency control system

ERCOT frequency control system

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IEEE-Power-Engineering-Society General Meeting

作者： Nelson, BT Yao, M Fu, J Boecker, A ALSTOM T&D EAI Inc Bellevue WA 98004 USA

ISBN: (纸本)0780379896

The entire ERCOT interconnection has become one control area, and one of ERCOT's major responsibilities is to maintain the interconnection frequency. This function is carried out by the frequency control system (FCS), which is part of the Power Operating system (POS). The POS/FCS interfaces with the Market Operating system (MOS). This paper presents the overview, implementation, tuning, and operational experience of the FCS. The ERGOT FCS actually represents the top level of a hierarchical AGC. Mr. Nelson presented this subject in a panel session of 2002 IEEE PES winter meeting. This paper reports both what Mr. Nelson had presented at the 2002 winter meeting and the updates and enhancements that have been made to the FCS since that presentation.

关键词： ancillary service EMS frequency control system and hierarchical AGC

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On the magnitude of the locking band of a phase-shift automatic frequency control system with a proportionally integrating filter

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Radiophysics and Quantum Electronics 1970年第4期13卷 437-440页

作者： Belyustina, L.N. Brykov, V.V. Kiveleva, K.G. Shalfeev, V.D.

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frequency control of power system including PV and wind farms by using output frequency band control of HVDC interconnection line

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JOURNAL OF ENGINEERING-JOE 2019年第18期2019卷 4879-4883页

作者： Tada, Kimiko Sato, Takamasa Umemura, Atsushi Takahashi, Rion Tamura, Junji Matsumura, Yoshiharu Yamaguchi, Daisuke Kudo, Hirooki Niiyama, Masakazu Taki, Yasuhito Kitami Inst Technol Dept Elect & Elect Engn Kitami Hokkaido Japan Hokkaido Elect Power Co Inc Sapporo Hokkaido Japan

Due to serious environmental issues in recent years, renewable energy has been focused on all over the world to solve the issues. However, because of indirect characteristics such as variations of solar radiation intensity or wind speeds, the output of power generation utilizing renewable energy becomes unstable. As a result, frequency and voltage in the power system can fluctuate. To solve this problem, various methods to control the frequency variations have been studied and reported until now, one of which is based on High voltage direct current (HVDC) transmission line. This paper proposes a novel control scheme to reduce the frequency variations due to large penetrations of wind power and photovoltaic (PV) power, which is introduced to power flow control of HVDC transmission line with utilizing a notch-band pass filter in its frequency control system.

关键词： power system interconnection HVDC power transmission load flow control photovoltaic power systems frequency control distributed power generation renewable energy sources wind power plants band-pass filters frequency control system notch-band pass filter HVDC transmission line power flow control photovoltaic power wind power novel control scheme High voltage direct current transmission line frequency variations power generation utilizing renewable energy solar radiation intensity indirect characteristics serious environmental issues HVDC interconnection line output frequency band control PV wind farms power system

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Research and design of high-performance DSP control system based on frequency control

Research and design of high-performance DSP control system b...

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作者： Qiumei Li Lijun Wei Hunan Railway Professional Technology College

With the rapid development of power electronic devices and microprocessors,AC variable frequency and speed regulating system has also made a *** thesis introduces the hardware circuit design based on TMS320F28335,and the result of the experiment proves the SVPWM algorithm is *** also does some research on VF control system of the inverter and the result of the experiments proves that the control system achieves the purpose,and has a quick dynamic response.

关键词： frequency control system SVPWM algorithm VF control system

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Sampled-data phase-shift automatic frequency control systems

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Radiophysics and Quantum Electronics 1970年第11期13卷 1301-1306页

作者： Sapfirov, S.G.

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Virtual inertia support based frequency and dynamic voltage control for grid-connected SPMSG-based wind turbine

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JOURNAL OF INTELLIGENT & FUZZY systemS 2024年第1期46卷 1043-1057页

作者： Sharma, Rakesh Sahay, Kuldeep Singh, Satyendra Inst Engn & Technol Dept Elect Engn Lucknow 226021 Uttar Pradesh India

The Challenge to stabilize the grid frequency increases with the increment of renewable energy resources. system inertia/frequency control is a significant concern for maintaining system stability with a fast response time during the load transition. This manuscript proposes surface-mounted permanent magnet synchronous generator (SPMSG) based wind energy conversion system (WECS) with a frequency support DC-link controlling loop and a converter protective DC-link voltagecontroller frequency support system. To achieve power exchange, the frequency control system (FCS) for the SPMSG-based wind turbine supports the grid-side virtual inertia. The DC-link voltage is disturbed during the load transition to maintain the frequency, while the electrolytic capacitor requires extra care regarding the DC bus voltage. This manuscript incorporates the FCS system with a supercapacitor and dynamic voltage limiter to avoid additional care of the DC bus voltage. A detailed analysis of system frequency with the additional load increment, normal connected load decrement, and various fault scenarios has been done. The proposed system is compared with the existing virtual inertia support (VIS). The simulation results show that the proposed frequency control system-based VIS efficiently limits the frequency deviations & DC-link voltage. The results are verified in the OPAL-RT 4510 real-time simulator environment to ensure the efficacy of the proposed system.

关键词： frequency control system wind energy conversion system surface-mounted permanent magnet synchronous generator (SPMSG) variable speed wind turbine system virtual inertia support

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Robust PI controller design for frequency stabilisation in a hybrid microgrid system considering parameter uncertainties and communication time delay

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IET GENERATION TRANSMISSION & DISTRIBUTION 2019年第14期13卷 3048-3056页

作者： Veronica, Arockya Jaya Samy Jeya Kumar, Natarajan Senthil Gonzalez-Longatt, Francisco Vellore Inst Technol Sch Elect Engn Chennai Campus Chennai Tamil Nadu India Univ South Eastern Norway Elect Power Engn Porsgrunn Norway

One of the major issues in the operation of an islanded microgrid is the frequency deviations caused by the variation of power production coming from non-dispatchable renewable energy sources. Using an appropriate control system may allow the system to deal with the frequency deviation and allow the system frequency to be restored to its rated value. A wide-area system frequency controller sends a control signal to each of the dispatchable generating sources to enforce the frequency control by using communication channels. However, the communication channels are susceptible to the time delays, which affect the performance of the frequency control system and potentially the system security. Also, the system parameters are uncertain due to the error in the modelling, variation in network topology, generations, loads etc. This study proposes a robust proportional and integral (PI) system frequency controller based on Kharitonov theorem (KT) considering the time delay of the communication system and the system parametric uncertainties. Simulation results demonstrate that the KT-based controller model has enhanced robustness compared to the conventional approaches of controller design.

关键词： delays power generation control frequency control distributed power generation robust control PI control control system synthesis uncertain systems power system control renewable energy sources control signal dispatchable generating sources communication channels frequency control system system security system parameters communication system system parametric uncertainties KT-based controller model robust PI controller design frequency stabilisation hybrid microgrid system parameter uncertainties communication time delay islanded microgrid frequency deviation nondispatchable renewable energy sources appropriate control system wide-area system frequency controller

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The system of frequency Matching of the Ultrasonic Generators with the Radiators in "Bulava" Apparatuses 19

The System of Frequency Matching of the Ultrasonic Generator...

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19th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices (EDM)

作者： Khmelev, Vladimir N. Barsukov, Roman, V Ilchenko, Eugeniy, V Altay State Tech Univ Biysk Technol Inst Branch Biisk Russia Ctr Ultrason Technol Biisk Russia

The article is devoted to the problem concerned with the determination of resonance frequency of the ultrasonic vibrating systems (the radiators) intended for the operation as a part of the ultrasonic technological ap... 详细信息

ISBN: (纸本)9781538650219

关键词： Ultrasound generator resonance matching frequency control system

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