A Calculation Method for Assessing the Ideal Degree of Inter-provincial Electric Power Trading
A technology of power trading and calculation methods, applied in the direction of AC networks with the same frequency from different sources, can solve problems such as lack of research and application, difficult business, and complex calculations, and achieve low development difficulty and high development efficiency. The effect of strong applicability
Active Publication Date: 2016-07-06
CHINA SOUTHERN POWER GRID COMPANY +1
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However, due to the lack of data, complex calculations, and business difficulties, research and applications in this field have been relatively scarce.
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[0019] The calculation method of the present invention based on the concept of ideal dispatching for evaluating the ideal degree of inter-provincial power transaction of the power grid, the specific implementation method is as follows:
[0020] (1) Based on the topology structure of the actual power grid, an equivalent network model with provinces as nodes and inter-provincial AC-DC links as edges is constructed.
[0021] Take the province as the node and the contact line between the provinces as the edge to obtain the point-line diagram of the power grid topology. Record the set of each node as N, and the i-th node as n i ; The set formed by each communication connection line is L A , and the jth communication connection line is denoted as l Aj ; The set of DC tie lines is L D , and the jth DC connection line is denoted as l Dj . if node n i , n j There is a directly connected AC or DC link between them, define n i , n j The cross-section s between them is the set fo...
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The invention is a calculation method for evaluating the ideal degree of inter-provincial power transaction of the power grid. It includes the following steps: 1) Construct an equivalent network model with the province as the node and the inter-provincial AC-DC connection line as the edge; 2) Read the parameters of the AC-DC connection line; 3) Read the actual 96-point curve of the inter-provincial power transaction , calculate the actual 96-point power demand curve of the receiving end node in the equivalent network model by accumulating with the receiving end curve; 4) Calculate the maximum outgoing capacity of each node in the equivalent network model; 5) Minimize the power loss of the network as Objective, to construct an evaluation function for the ideal degree of power trading z ; 6) Construct the calculation model of ideal degree evaluation, find the optimal solution and get z 7) Calculate the power loss of the AC-DC connection line of the actual power grid; 8) Compare the calculation results of step 6) and step 7), and analyze the relative error between the two, which reflects the ideal degree of inter-provincial power trading . The invention has strong applicability and practicality.
Description
technical field [0001] The invention is a calculation method for evaluating the ideal degree of inter-provincial power transaction of a power grid, which belongs to the transformation technology of the calculation method for evaluating the ideal degree of inter-provincial power transaction of the power grid. Background technique [0002] In terms of power grid economic operation and management, due to the multi-dimensionality of "multi-subjects, multi-objectives, and multi-stages" in economic analysis, the relevant statistical data is relatively scattered, and the systematic research is not deep enough. At present, there is no systematic, scientific and effective analysis strategy. , can be directly used to guide the economic operation of the power grid, especially after the implementation of the EVA (Economic Value Added) assessment management issued by the State-owned Assets Supervision and Administration Commission since 2010, the economic operation of the power grid needs...
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IPC IPC(8): H02J3/06
Inventor 和识之范展滔冯永青陈启鑫耿照为赖晓文陈蕾骆威
Owner CHINA SOUTHERN POWER GRID COMPANY