Power supply benefit evaluation method for wind farm grid connection
A technology for wind farms and benefits, applied in the field of comprehensive evaluation of distributed power sources, can solve problems such as impact evaluation of inability to supply power benefits
Active Publication Date: 2019-03-08
HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST +1
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[0006] The present invention provides a power supply benefit evaluation method aiming at wind farm grid-connected, to at least solve the problem in the related art that it is impossible to evaluate the impact of wind farm grid-connected on power supply benefit
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[0045] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0046] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.
[0047] This embodiment provides a power supply benefit evaluation method for wind farm grid connection, which is used to evaluate the impact of wind farm grid connection operation on power supply line network loss, voltage quality, and line load. The embodiment of the present invention preferably adopts DIgSILENTPowerFactory software, with figure 1 The three-machine nine-node system shown is taken as an example for illustration. exist figure 1 Among...
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The invention provides a power supply benefit evaluation method specific to wind power plant grid connection. The power supply benefit evaluation method comprises the steps of 1, performing load data Monte Carlo sampling; 2, according to the load data Monte Carlo sampling, calculating optimal power flow of a first power distribution network, including power loss P0<Loss> and Q0<Loss>, voltage offset U0<max> and U0<min>, and circuit load rate Loading0; 3, performing wind power plant output data Monte Carlo sampling; 4, according to the wind power plant output data a Monte Carlo sampling, calculating optimal power flow of a second power distribution network, including power loss P<Loss> and Q<Loss>, voltage offset U<max> and U<min>, and circuit load rate Loading; 5, calculating wind power plant grid-connected power supply indexes LossP, LossQ, DV and LL according to the optimal power flow of the first power distribution network and the optimal power flow of the second power distribution network; and 6, performing evaluation on the power supply benefit of the wind power plant according to the power supply indexes. By adoption of the power supply benefit evaluation method, the problem that evaluation cannot be performed specific to influence on the power supply benefit after wind power plant grid connection in the correlation technique is solved.
Description
technical field [0001] The invention relates to the field of comprehensive evaluation of distributed power sources, in particular to a power supply benefit evaluation method for wind farm grid connection. Background technique [0002] With the continuous expansion of the grid scale, the grid's dependence on remote power is also increasing, which also increases the probability of grid failure. With the development of the global economy and the intensification of energy consumption, human development is facing huge challenges, which also brings great opportunities for the development of new energy; with the improvement of environmental protection, low-carbon and energy-saving awareness, new energy, especially renewable energy Gaining more and more attention, energy conservation and emission reduction, green energy, and sustainable development have become the focus of current countries. [0003] Distributed power generation has the characteristics of high energy utilization ef...
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IPC IPC(8): H02J3/38G06Q50/06
CPCG06Q50/06H02J3/386H02J2203/20Y02E10/76Y02E40/70Y04S10/50
Inventor 谢振超林道鸿万信书乔峰陈玉峰
Owner HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST