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A dynamic evaluation method for wind power capacity
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A technology for wind power acceptance and dynamic assessment, applied in wind power generation, electrical components, circuit devices, etc.
Active Publication Date: 2018-08-31
STATE GRID CORP OF CHINA +1
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[0003] The purpose of the present invention is to solve the existing problem of further increasing the capacity of wind power while ensuring the safety and stability of the power grid. The present invention provides a dynamic evaluation method for the capacity of wind power
Method used
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specific Embodiment approach 1
[0046] Specific implementation mode one: see figure 1 Describe this embodiment, a method for dynamically evaluating wind power capacity described in this embodiment, the method includes the following steps:
[0047] Step 1: Use the measurement system to obtain the wind power on-grid power of the grid system at each time, plot the point values of the wind power on-grid power corresponding to each time, and draw the real-time wind power on-grid power curve of the grid system;
[0048] Step 2, according to the peaking capacity P of the power grid el , to obtain the peaking margin P of the power grid YU ;
[0049] Step 3, according to the peak regulation margin P of the power grid YU , to obtain the maximum wind power capacity P of the power grid AD ;
[0050] Step 4, according to the maximum wind power capacity P of the grid AD and grid system real-time wind power on-grid power curve to obtain the real-time evaluation index ζ of wind power acceptance capacity;
[0051] S...
specific Embodiment approach 2
[0053] Embodiment 2: The difference between this embodiment and the wind power acceptance capacity dynamic evaluation method described in Embodiment 1 is that the application measurement system obtains the wind power on-grid power of the power grid system at each time, and the corresponding The specific steps for drawing the real-time wind power grid power curve of the grid system are as follows:
[0054] Each power station gateway in the power grid system is equipped with a measurement system, which collects data through the measurement system every 15 minutes, and obtains the point value collection of wind power grid power according to the collected data. The set of values depicts the wind power on-grid power curve, so as to obtain the real-time wind power on-grid power curve of the grid system.
[0055] In this embodiment, the grid is equipped with a measurement system at the gateway of each power plant to collect data every 15 minutes. In this way, the wind power on-gri...
specific Embodiment approach 3
[0056] Embodiment 3: The difference between this embodiment and the wind power receiving capacity dynamic evaluation method described in Embodiment 1 is that the peak-shaving capacity P of the power grid el Use the following formula to achieve:
[0057]
[0058] In the formula: P el is the peak-shaving capacity value of the power grid at a certain moment;
[0059] P GN is the maximum generating power of all powered generators in the power grid;
[0060] P GL The generated power required for a certain period of time for the grid;
[0061] P SPM The maximum power supply load for the grid;
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Abstract
The invention relates to a dynamic evaluation method for wind power admitting ability and belongs to the field of the wind power admitting ability of a wind power grid. The method is adopted for guaranteeing the safety and stability of the power grid at present and further promoting the wind power admitting ability. The method comprises the following steps: adopting a measuring system for acquiring the online power of the wind power of a power gridsystem at each moment, marking the point value of the online power of the wind power corresponding to each moment and drawing a real-time wind power online-power curve of the power gridsystem; acquiring a pitch peak margin PYU of the power grid according to a pitch peak volume Pel of the power grid; acquiring the maximal wind power admitting ability PAD of the power grid according to the pitch peak margin PYU of the power grid; acquiring a real-time evaluation index zeta of the wind power admitting ability according to the maximal wind power admitting ability PAD of the power grid and the real-time wind power online-power curve of the power grid system; and dynamically evaluating the wind power admitting ability of the power grid according to the real-time evaluation index zeta of the wind power admitting ability, thereby completing the dynamic evaluation for the wind power admitting ability of the power grid. The dynamic evaluation method is used for evaluating the wind power admitting ability of the power grid.
Description
technical field [0001] The invention belongs to the field of wind power receiving capacity of wind power grid. Background technique [0002] At present, renewable energy such as wind power and photovoltaic power generation is developing rapidly. On the one hand, it can alleviate the fossil energy crisis and reduce carbon emissions. On the other hand, it also has a certain impact on the safe and stable operation of the power grid. A reasonable assessment of wind power output in the power grid can further increase the acceptance of wind power while ensuring the safety and stability of the power grid. Contents of the invention [0003] The purpose of the invention is to solve the existing problem of further increasing the wind power acceptance capacity while ensuring the safety and stability of the power grid. The invention provides a dynamic evaluation method for the wind power acceptance capacity. [0004] A method for dynamically evaluating wind power capacity, the method...
Claims
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Application Information
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