Emergency wind power plant re‐dispatching against transmission system cascading failures using reverse tracking of line power flow

Hoseinzadeh, Bakhtyar; Blaabjerg, Frede; Chen, Zhe; Teodorescu, Remus

doi:10.1049/iet-gtd.2019.1950

Cited by 7 publications

(7 citation statements)

References 23 publications

(30 reference statements)

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“…At the actual operation process, the grid voltage fluctuation will affect the operation of some rectifiers and cause the DC side voltage to change, at the same time, other external disturbances may also affect the system. e dynamic responses of the average value of the capacitor voltage when the two control systems are subjected to external disturbances, the disturbance is set as the DC side voltage rise, the amplitude is 5%, and for the active disturbance rejection controller, the disturbance is an external disturbance [18]. It can be seen from the figure that when the control system proposed by the author is subjected to external disturbance, the output has obvious fluctuations, and the oscillation is about 0.05 s before returning to stability.…”

Section: Methodsmentioning

confidence: 99%

Application Analysis of MMC-HVDC AC Tie Line Transmission in New Energy Power Generation

Sun

Dang

Jia-yi

2022

Journal of Control Science and Engineering

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In order to solve the problem of new energy power generation, the author proposes an application analysis method based on MMC-HVDC AC tie line transmission in new energy power generation. This method analyzes the research status of the operation, protection, and control of HVDC flexible transmission systems in various countries and summarizes the advantages of flexible HVDC transmission systems compared with traditional DC, the research focus of the system protection control is explored from the research methods and research ideas. Experimental results show that: the dynamic response of the average value of the capacitor voltage when the two control systems are subjected to external disturbances, the disturbance is set as the DC side voltage rise, and the amplitude is 5%. Conclusion. MMC-HVDC is beneficial to improve the stability and reliability of system operation.

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Section: Methodsmentioning

confidence: 99%

Application Analysis of MMC-HVDC AC Tie Line Transmission in New Energy Power Generation

Sun

Dang

Jia-yi

2022

Journal of Control Science and Engineering

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“…where 𝑃 𝑜𝑢𝑡 (𝑤𝑠 80 ) is a real power generation for a turbine for a duration of one day for a wind turbine operating at 80 meters high, 𝑃 𝑇𝑜𝑡𝑎𝑙 denotes the complete wind farm power generation in a day, 𝑁 is the total number of turbines within a farm, 𝑃 𝑜𝑢𝑡 represents the real power of each turbine for a complete duration of one year, and 𝑃 𝑚𝑎𝑥 is peak power generation for a turbine within one year. Using the amount of power generated in a time period, versus the amount of power that could have been generated, the load factor (LF) can be derived as in (10).…”

Section: First Scenariomentioning

confidence: 99%

“…However, because wind energy is uncontrollable, rapid growth in wind power has had a growing impact on the power system's operational stability and security [10].…”

Section: Introductionmentioning

confidence: 99%

A Novel Technique for Smoothing Wind Farm Output Power Intermittency

Hassan

Kez²

2022

PJBAS

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In recent decades, climate change has evolved from a hypothetical threat to the earth and its inhabitants to a terrifying fact. It is occurring simultaneously that the price of oil and natural gas continues to rise, endangering the national economy and global security. As a result, seeking alternative renewable energy sources has become a pressing necessity. However, one of the main issues with wind and solar energy is that it is variable and intermittent, resulting in erroneous output power projections. To address this issue, the main objective of this paper is to present and analyze a new strategy for reducing the output power intermittency of distributed wind farms. Instead of aggregating all wind turbines in one location, the proposed approach distributes a large number of wind turbines throughout diverse geographical locations with significant wind potential energy. The total output power generation from all wind turbines is then aggregated through a single control system, which injects the power into the grid in a manner similar to a virtual power plant. Later, the analysis is broadened to further smooth out the fluctuation of the aggregated wind farm power by using energy storage devices and smart grid technologies. Finally, the analytical results reveal that the proposed methodology allows for extended periods of energy delivery when wind speeds are low or not blowing.

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“…As a consequence, the penetration of all types of renewable energy sources into power system is expected to register a quite different record through 2022, putting all past records behind. There are still some challenges that are remained unresolved or require more efficient technological solutions regarding reliable and stable integration of renewable energy sources into power system [2,3].…”

Section: Introductionmentioning

confidence: 99%

A novel control technique for on‐load tap changer to enlarge the reactive power capability of wind power plants

Hoseinzadeh

Blaabjerg

2022

IET Generation Trans & Dist

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This paper suggests a new control algorithm for On‐Load Tap Changer (OLTC) of wind farm main transformer that is responsible for voltage regulation of collector network. The conventional control scheme adjusts the voltage of LV side of transformer without considering the wind turbine voltages. The voltage of end‐string wind turbines may reach the upper or lower limits of Over or Under‐Excited operation regions. Voltages close to upper or lower limits bounds the reactive power capability (generation or consumption) of wind farm due to dependency of wind turbine reactive power capability to voltage. Operation of wind turbine at extreme voltages may stress its power electronic devices. Furthermore, minor disturbances at either grid or power plant may trigger the protection system and interrupt generation due to vicinity of operation point to protection thresholds. The suggested technique integrates the OLTC control into the power plant controller and considers both LV side voltage of transformer and wind turbine voltages. By monitoring the wind turbine voltages, the voltage setpoint of OLTC is adjusted to provide voltages closer to middle of range for wind turbines that prevents the wind turbines from reaching the voltage limits. Dynamical simulations conducted in DigSILENT PowerFactory software for both Under‐Excited and Over‐Excited operation regions demonstrate desired performance for the suggested technique.

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Emergency wind power plant re‐dispatching against transmission system cascading failures using reverse tracking of line power flow

Cited by 7 publications

References 23 publications

Application Analysis of MMC-HVDC AC Tie Line Transmission in New Energy Power Generation

Application Analysis of MMC-HVDC AC Tie Line Transmission in New Energy Power Generation

A Novel Technique for Smoothing Wind Farm Output Power Intermittency

A novel control technique for on‐load tap changer to enlarge the reactive power capability of wind power plants

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