Evaluation method of wind power consumption capacity in combined heat and power grid
A technology of combined heat and power supply and absorption capacity, which is applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as waste, save energy, improve absorption capacity, and reduce wind curtailment.
Active Publication Date: 2017-11-28
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0004] However, due to the lack of practical methods for effectively evaluating the wind power capacity of the power system, especially in the heating season, in order to ensure the safety of the power system, most dispatchers will choose to abandon the wind during the heating season, resulting in waste
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Embodiment 1
[0098] The evaluation method of wind power consumption capacity in heating season based on multivariate stochastic production simulation described in the present invention is based on the power / heat load data of a power system in a certain area in northern my country, which is scaled down according to a variable ratio, and the simulation period is 30 days. The number of time slots in the day is N t =96, that is, the segment length is a quarter of an hour. The calculation steps are as follows:
[0099] (1) Taking time point 1 as an example for illustration, according to step S10, first obtain the following Figure 8 The electric / thermal load surface shown in Table 1 and the key parameters of the electric / thermal load are shown in Table 1, and then obtained as Figure 9 The three-dimensional probability distribution of wind power shown is discretized with the step size ΔH;
[0100] Table 1 Key parameters of electricity / heat load in a power system in a region in northern my co...
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A method for evaluating wind power consumption capacity in combined heat and power supply network, comprising the following steps: discretizing the continuous heat load curve and the continuous electric load curve to obtain the discretized continuous electric load curve and the discretized continuous electric load curve. Heat load curve; each heat and power cogeneration unit arranges production with the minimum heat power, loads on the discretized continuous heat load curve, and carries load on the discretized continuous electric load curve with the corresponding minimum electric power; each non- The heat supply thermal power unit is arranged for production with the minimum electric power, and loads are carried on the continuous electric load curve after discretization; The continuous heat load curve after discretization is fully discharged; arrange wind power to carry load on the continuous electric load curve after discretization, until the continuous electric load curve after discretization is also fully discharged, and obtain wind power consumption and wind power consumption rate .
Description
technical field [0001] The invention belongs to the field of electric power system operation and new energy technology, and in particular relates to an evaluation method of wind power consumption capacity in a cogeneration power supply network. Background technique [0002] As the installed capacity of wind power continues to increase, the proportion of wind power grid-connected output to the total output continues to increase. Wind curtailment due to insufficient power supply flexibility occurs frequently. According to statistical data, the wind power output peak-shaving characteristics of most wind power bases in China show the characteristics of reverse load peak-shaving, which increases the peak-valley difference of net load and increases the difficulty of unit combination arrangement. Especially in the heating season, the combined heat and power units operate in a "heat-fixed power" mode, which makes the system's peak-shaving capacity insufficient, resulting in a very ...
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IPC IPC(8): G06F19/00
Inventor 王丰吴涛金海峰刘苗李煊乔颖鲁宗相丁立
Owner STATE GRID CORP OF CHINA