An optimization method for coordinating electric power balance within the scope of large interconnected power grid
A technology of electric power balance and interconnection grid, which is applied in the direction of single-network parallel feeding arrangement, electrical components, circuit devices, etc., can solve the problem of not fully considering the overall network planning, national and provincial coordination and balance, difficulty in adapting to the coordinated operation requirements of the whole network, etc. problems, to avoid large-scale unified computing problems, reduce the average power shortage depth, and improve the configuration level
Active Publication Date: 2016-06-29
TSINGHUA UNIV +1
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[0004] The current power balance model is mainly based on self-balancing within the province, without full consideration of overall network planning and national-provincial coordination and balance, and it is difficult to adapt to the increasingly urgent requirements for coordinated operation of the entire network
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[0022] The present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein can be used to explain the present invention, but do not limit the present invention.
[0023] The present invention provides an optimization method for coordinating power and electricity balance within the scope of a large interconnected power grid. The specific implementation manners are as follows figure 1 As shown, including the following steps:
[0024] 1) Each provincial power grid generates a set of equivalent power generation cost curves according to the time period (usually a month, divided into 24 time periods per day) according to the maintenance plan, adjustable capacity and power generation cost information of each generator set of the provincial power plant;
[0025] The equivalent power generation cost curve is the external equivalent characteristics of all generator sets in the pro...
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The invention relates to an optimization method for balance of electric power and energy within a large interconnected power grid range in a cooperated mode, and belongs to the field of power system automation. The method comprises the steps that (1) all provincial power grids respectively generate a set of equivalent generating cost curves according to time periods, (2) the provincial power grids which are limited in electric quantity generate electric quantity limitation cost increment curves, (3) all the provincial power grids upload the equivalent generating cost curves and the electric quantity limitation cost increment curves to a national power grid, (4) the national power grid takes the provincial power grids as nodes and inter-provincial connection lines as branch paths to construct an equivalent topological model for inter-provincial electricity sending and receiving, (5) the national power grid optimizes the inter-provincial electricity sending and receiving plans and electricity plans of national scheduling power plants, (6) the national power grid sends the inter-provincial electricity sending and receiving plans to all the provincial power grids, and (7) all the provincial power grids optimize the electricity plans of the national scheduling power plants according to the inter-provincial electricity sending and receiving plans. The method solves the problem of large-scale unified computing, is high in computing efficiency, low in implementation difficulty, and high in engineering practicability.
Description
Technical field [0001] The invention belongs to the technical field of power system automation, and particularly relates to an optimization method for coordinating power and electricity balance in a large interconnected power grid. Background technique [0002] In recent years, the continuous, rapid and unbalanced power demand growth and the rapid development of renewable energy have prompted new trends and new changes in the development of energy and power in my country, and have presented new challenges to the overall power and electricity balance of the power grid. On the one hand, the uneven distribution of my country’s energy resources and regional economic development is intensifying, and the average power shortage of power shortages has increased, which is not conducive to ensuring stable and sustainable economic development; on the other hand, the management of "market coal and planned power" The system has led to prominent contradictions between electricity and coal. In t...
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IPC IPC(8): H02J3/00H02J3/46
Inventor 赖晓文钟海旺夏清康重庆杨军峰
Owner TSINGHUA UNIV
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