A method and apparatus for photovoltaic dissipation in a micro-energy grid
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A micro-energy and photovoltaic technology, applied in the field of power systems, can solve the problems of increasing the number of air source heat pumps, a small number of air source heat pumps, and small photovoltaic consumption
Pending Publication Date: 2018-12-18
CHINA ELECTRIC POWER RES INST +2
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[0004] In order to overcome the deficiencies of low utilization rate of air source heat pumps, small amount of photovoltaic consumption, and small number of schedulable air source heat pumps in the above-mentioned prior art, the present invention provides a method and device for photovoltaic consumption in a micro-energy network. All the air source heat pumps in the micro energy network are clustered, and then based on the clustering results, the pre-built photovoltaic consumption model is solved to obtain the Pareto optimal solution set; finally, the air source heat pump is determined according to the Pareto optimal solution set The optimal scheduling strategy, and photovoltaic consumption according to the optimal scheduling strategy, improves the utilization rate of air source heat pumps in the micro energy network, and the large amount of photovoltaic consumption increases the number of schedulable air source heat pumps
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Embodiment 1
[0076] Embodiment 1 of the present invention provides a photovoltaic consumption method in a micro energy network, the specific flow chart is as follows figure 1 As shown, the specific process is as follows:
[0077] S101: Clustering all air source heat pumps in the micro energy grid;
[0078] S102: Based on the clustering results obtained in S101 clustering, solve the pre-built photovoltaic consumption model, and obtain the Pareto optimal solution set (ie, the pareto optimal solution set);
[0079] S103: Determine the optimal scheduling strategy of the air source heat pump according to the Pareto optimal solution set obtained by solving S102, and perform photovoltaic consumption according to the optimal scheduling strategy;
[0080] In the above S101, the specific process of clustering the air source heat pumps in the micro energy network is as follows:
[0081] Based on the equipment parameters of the air source heat pumps in the micro energy network, the analytic hierarch...
Embodiment 2
[0138] Embodiment 2 of the present invention takes a micro-energy network containing high-permeability photovoltaics as an example, and provides a photovoltaic consumption method in a micro-energy network. The specific process is as follows:
[0139] 1) Select 1000 air source heat pumps in the micro energy network as the research object, and investigate the system parameters of 1000 air source heat pumps, as shown in Table 1:
[0140] Table 1
[0141]
[0142] 2) Clustering all the air source heat pumps in the micro energy network, a total of six types of 927 air source heat pumps are obtained (some air source heat pumps cannot be clustered with other units, so they are excluded). Clustering results such as figure 2 As shown, the air source heat pump clustering parameters are shown in Table 2:
[0143] Table 2
[0144]
[0145]
[0146] 3) Obtain the photovoltaic output curve in the micro energy network, such as image 3 shown. Obtain the daily consumption curve...
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Abstract
The invention provides a method and apparatus for photovoltaic dissipation in a micro-energy network. Firstly, the air source heat pump in the micro-energy network is clustered, and then a pre-constructed photovoltaic dissipation model is solved based on the clustering result to obtain a Pareto optimal solution set. Finally, the optimal dispatching strategy of air source heat pump is determined, and the photovoltaic energy dissipation is carried out, which improves the utilization rate of air source heat pump in the micro-energy network. The photovoltaic energy dissipation is large, and the number of air source heat pumps that can be dispatched is increased. At the same time, the heat demand and the heating cost of the us are ensured, By clustering the air source heat pumps with differentparameters, the scheduling of air-source heat pumps is transformed into the scheduling of air-source heat pump clusters, As a result, the difficulty of the dispatch algorithm is simplify, the light abandonment phenomenon in the micro-energy network during the peak period of the photovoltaic power generation is reduced, the energy waste is reduced, the peak-shaving capacity of the micro-energy network is increased, the safety and stability of the large power network can be ensured, the energy and heating cost are saved, the heating quality is improved, and the pollution gas generated by coal combustion is reduced.
Description
technical field [0001] The invention relates to the technical field of electric power systems, in particular to a photovoltaic consumption method and device in a micro energy network. Background technique [0002] The large-scale and rapid development of photovoltaics has caused problems in operation and consumption in some areas. Photovoltaic power generation has the characteristics of intermittent, random, and greatly affected by climate and environmental factors, which poses new challenges to system power flow control, auxiliary service calls, short-circuit current control, and power quality assurance. Due to the limited capacity of the distribution network, the high photovoltaic penetration rate is not conducive to the safe, stable and economical operation of the distribution network. In the case of a serious shortage of peak-shaving capacity of the power grid, in order to ensure the safety of the power grid, the power dispatching organization has to take measures to li...
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