An online static safety assessment and early warning method for wind farms
A static security, wind farm technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc.
Inactive Publication Date: 2017-07-18
中电国际新能源控股有限公司 +1
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Problems solved by technology
The invention adapts to the rapid fluctuation of current wind power generation and the control requirements of the safe operation of reactive power and voltage of wind farms
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[0024] The wind farm online static safety assessment and early warning method proposed by the present invention comprises the following steps:
[0025] 1) with T collect The real-time measurement data of the wind farm is collected for the collection interval (T collect The value range is 5 to 20 seconds, the typical value is 10 seconds), the real-time measurement data include: the measured value of the bus voltage amplitude on the high voltage side, the measured value of the active power of the wind turbine, the measured value of the reactive power of the wind turbine value, the measured value of the terminal voltage amplitude, the measured value of the operating state of each switch and switch in the wind farm; using the data of each measured value, the state estimation of the wind farm and the calculation of the power flow of the wind farm are carried out, and the operation of the wind farm is obtained. The base state variable of the base state value includes: the base stat...
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The invention relates to an online static security assessment and early warning method for wind farms, which belongs to the field of power system operation and control for new energy access. The online static security assessment and early warning method for the wind farm includes the steps of collecting real-time measurement data of the wind farms to obtain state variables of the ground state of wind farm operation, safely assessing the operation status of the wind farms under the operation mode of N-1 to obtain voltage maximum and minimum value of every node under the condition that a single wind turbine is disconnected, respectively disconnecting every wind power collector line to obtain voltage amplitude of every node in the wind farms and the voltage maximum and minimum value under the condition that every single wind power collector line is disconnected so that the voltage amplitude of every node exceeds the voltage maximum or is below the voltage minimum value, sending an early warning information of the node, and obtaining a security constraint condition to be as a decision-making constraint condition of an automatic voltage control sub-station for the wind farms. The online static security assessment and early warning method for wind farms is capable of guaranteeing safe operation of the other parts of the wind farms under the condition that a single machine or a single wind power collector line is disconnected.
Description
technical field [0001] The invention belongs to the technical field of operation and control of a new energy access power system, and relates to an online static safety assessment and early warning method of a wind farm. Background technique [0002] In recent years, affected by global climate warming and energy crisis, the importance of clean energy has become increasingly prominent. Among them, wind power has attracted widespread attention from all over the world due to its huge development potential and relatively mature development technology, and has developed rapidly. At present, my country adopts a large-scale centralized development model for wind power resources. There are dozens of wind farms distributed in each large-scale wind power development area, and the installed capacity of a single wind farm has reached more than 100,000 kilowatts. [0003] Due to the inherent intermittent characteristics of wind power generation, large-scale wind power grid integration ha...
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IPC IPC(8): G06F19/00
Inventor 贾宁陈伟王彬孙宏斌于云忠叶景芳蒋春涛郭庆来葛怀畅
Owner 中电国际新能源控股有限公司