Studies on High-Frequency Generator Tripping Strategy for Sending System of Wind-PV-thermal-Bundled Power Transmitted By HVDC

Chen, Yun; Chen, Dezhi; Wang, Yi; Song, Yunting; Gao, Feng; Zhang, Zhiqiang; Zhang, Shuang; Liang, Jing

doi:10.1049/cp.2015.0353

Cited by 4 publications

(9 citation statements)

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“…At present, relevant research has been carried out at home and abroad to formulate a high-frequency tripping machine with a high proportion of new energy. Literature [5][6][7] proposes that the over-frequency tripping scheme should give priority to tripping the wind turbine to ensure that there are enough traditional generators to perform primary frequency modulation. However, the above scheme does not tap the rapid adjustment ability of new energy, and the setting value of the scheme is fixed in every round, which has certain limitations.…”

Section: Introductionmentioning

confidence: 99%

Study on Coordinated Control of New Energy Over-Frequency Ride-Through and Over-Frequency Generator-Tripping Scheme

Bing

Yanxia²,

Zhang

2023

J. Phys.: Conf. Ser.

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After the fault isolation of the outgoing power grid with a high proportion of new energy, the high-frequency shutdown of the third line of defense is an important control measure to restrain the rise of the frequency of the sending-end power grid. With the increase in the proportion of intermittent power sources such as wind power and photo-voltaic power, the frequency characteristics of the power grid have become more complex. Considering the response characteristics and emergency control capabilities of wind power and photo-voltaic power, this paper proposes a high-frequency ride-through control strategy based on new energy stations. Through coordinated control with high-frequency shutdown measures, the new energy stations can rapidly reduce their power to replace some costly conventional unit operations to achieve more economical frequency safety control, after the high-frequency machine switching round action is executed to avoid over-switching triggering low cycle load shedding when the frequency is reduced to the threshold value, it will trigger the rapid recovery of new energy power generation to meet the requirements of refined frequency stability control of modern power grids. Based on the actual planning of the high-voltage transmission end grid scale, a simulation system was built, and a new energy high-frequency ride-through model was built, which verified the feasibility of the proposed coordinated control scheme for high-frequency switching off with a high-frequency ride-through, and verified the adaptability of the proposed scheme under different operation modes.

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Section: Introductionmentioning

confidence: 99%

Study on Coordinated Control of New Energy Over-Frequency Ride-Through and Over-Frequency Generator-Tripping Scheme

Bing

Yanxia²,

Zhang

2023

J. Phys.: Conf. Ser.

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“…Shuyong Chen, of the China Electric Power Research Institute, put forward a control scheme for generator tipping, aiming at the goal of maintaining transient stability after system failure, pointing out that it is difficult to ensure stability or the cost is too high to just remove thermal power after a serious failure, so some distributed power sources should also be removed [13]. Yun Chen, of the North China Electric Power University, designed a scheme combining wind-photovoltaic-thermal energy with a highfrequency generator tripping to adapt to the fluctuation of wind speed and lighting [14]. Although the control strategies proposed by them partly involve the coordinated control of new energy units and conventional units, they only start from the point of view of generator tripping, and neither of them considers the power control of distributed power sources.…”

Section: Introductionmentioning

confidence: 99%

An Emergency Coordinated Control Strategy to Improve the Transient Stability of a Single-Ended Distribution Network with Flexible Interconnection Channel Blocking

Ma,

Sun,

Qin

2023

Sensors

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Based on the scenario of high-penetration distributed photovoltaic connected to an AC/DC distribution network, this paper analyzes the dynamic characteristics of frequency and voltage in a distribution network after the blocking failure of the flexible interconnection channel. In order to enhance the transient stability of the system after the fault, this paper comprehensively considers the active regulation ability of photovoltaic units, and puts forward an emergency coordinated control strategy for a single-ended distribution network with flexible interconnection channel blocking. Firstly, the non-fault channel is overloaded for a short time, then the comprehensive influence of factors such as electrical distance, response time and adjustment cost on the frequency modulation effect of the system is quantitatively evaluated; according to the evaluation results, the photovoltaic and synchronous units are controlled by “control instead of tripping”, and finally, the high-frequency tripping is carried out, based on the principle of “photovoltaics first”. After the frequency control is completed, the reactive power optimization model of the system is established, and the improved tabu–particle swarm optimization algorithm is used to solve it, so as to optimize the voltage of the distribution network nodes. Finally, an equivalent simulation model is established to verify the coordinated control strategy.

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“…En la actualidad muchos de los sistemas eléctricos de potencia se han ido adaptando al ingreso de nuevas fuentes de energía convencional y no convencional [1], lo que da cabida a decir que los sistemas eléctricos de potencia hoy en día están conformados por un tipo de generación híbrida [2], la cual, en un fututo tendrá en su mayor parte generación cuya fuente de energía principalmente sea proveniente de recursos renovables no convencionales [3], [4], lo que provocará que la característica de la frecuencia sea más compleja de analizar [1], [5], dado que la misma está determinada por la respuesta dinámica de las centrales térmicas [6]. La incorporación de estas nuevas fuentes de generación ocasiona que el sistema tenga desbalances en sus flujos de potencia [7], debido a que, estas fuentes de energía no aportan potencia reactiva y el sistema comienza a experimentar variaciones en su frecuencia [2], [3].…”

Section: Introductionunclassified

“…La incorporación de estas nuevas fuentes de generación ocasiona que el sistema tenga desbalances en sus flujos de potencia [7], debido a que, estas fuentes de energía no aportan potencia reactiva y el sistema comienza a experimentar variaciones en su frecuencia [2], [3]. Así también, al momento de ocurrir algún tipo de contingencia o perturbación en el sistema, esté podría ocasionar un desbalance generación-carga, provocando eventos de sobrefrecuencia o de baja frecuencia [3], [8], [9] considerables si el sistema queda dividido en islas [10], [11], lo que ocasionara que el sistema tenga zonas con un mayor despacho de generación y baja demanda energética; y zonas con una alta demanda energética pero con un despacho de energía demasiado bajo; a esto se le debe sumar el problema ocasionado por el disparo no ordenado de unidades de generación eólica-PV-térmica [1]; produciendo una falla muy grave en el sistema y por ende una inestabilidad [12] de tal magnitud que podría generar un disparo en cascada de las protecciones con lo que ocurriría un colapso del sistema como lo menciona [11].…”

Section: Introductionunclassified

Parametrización del esquema de disparo de generación ante eventos de sobrefrecuencia en un sistema eléctrico utilizando técnicas de optimización / Parametrização do esquema de disparo de geração em resposta a eventos de sobrefrequência em um sistema elétrico usando técnicas de otimização

Cela¹,

Valenzuela²

2022

BASR

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Studies on High-Frequency Generator Tripping Strategy for Sending System of Wind-PV-thermal-Bundled Power Transmitted By HVDC

Cited by 4 publications

References 0 publications

Study on Coordinated Control of New Energy Over-Frequency Ride-Through and Over-Frequency Generator-Tripping Scheme

Study on Coordinated Control of New Energy Over-Frequency Ride-Through and Over-Frequency Generator-Tripping Scheme

An Emergency Coordinated Control Strategy to Improve the Transient Stability of a Single-Ended Distribution Network with Flexible Interconnection Channel Blocking

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