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A method for dynamic dispatch optimization of generation and transmission system of cross-region interconnected power network

A technology for power generation and transmission systems and interconnected grids, which is applied in the direction of circuit devices, AC network circuits, single-network parallel feeding arrangements, etc., and can solve problems such as difficulty in ensuring low-cost operation of power generation and transmission systems

Active Publication Date: 2018-12-21
HEFEI UNIV OF TECH
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Problems solved by technology

However, the uncertainty of new energy output and load demand is ubiquitous and unavoidable. When the actual value is quite different from the forecasted value, it will be difficult to use the day-ahead contact line plan determined by the forecast curve as the benchmark value of the real-time plan. Guarantee the low-cost operation of the power generation and transmission system

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  • A method for dynamic dispatch optimization of generation and transmission system of cross-region interconnected power network
  • A method for dynamic dispatch optimization of generation and transmission system of cross-region interconnected power network
  • A method for dynamic dispatch optimization of generation and transmission system of cross-region interconnected power network

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Embodiment Construction

[0089] In this embodiment, the dynamic scheduling optimization method of the power generation and transmission system of the inter-regional interconnection grid is applied to such as figure 1 The power generation and transmission system of the cross-regional interconnection grid shown includes: conventional generators, photovoltaic units, wind turbines, rigid loads, flexible loads, and DC link lines connecting each area within each area. figure 1 are respectively represented as 1, 2, 3, 4, and 5; the dispatching organization obtains the output and power demand of each unit of the cross-regional interconnection grid through detection and communication equipment at the decision-making moment, and obtains the strategy according to the dynamic dispatching optimization method of the cross-regional interconnection grid Select the optimal action to adjust the output power of conventional generators, adjust the transmission power of DC link lines, and reduce the demand for flexible loa...

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Abstract

A method for optimize that dynamic dispatch of power generation and transmission system include such steps as establishing a multi-area interconnected power network structure including conventional generator set, photovoltaic generator set, wind generator set, rigid load, flexible load and DC tie line, and establishing physical model of each unit. Then the dynamic dispatching problem of interconnected power network is established into the corresponding MDP mathematical model. Finally, the depth Q learning algorithm is used to solve the MDP mathematical model. Under the strategy, the dispatching mechanism can select a reasonable action plan according to the actual operation state of the power grid at the dispatching time, and realize the dynamic dispatching of the interconnected power gridgeneration and transmission system. The invention can effectively cope with the randomness of the new energy and load demand in the cross-region interconnected power network, promotes the consumptionof the new energy, is conducive to the safe and economic operation of the cross-region interconnected power network, and improves the stability of the operation of the power system.

Description

technical field [0001] The invention belongs to the field of inter-regional interconnected power grid dispatching, specifically a dynamic dispatching model and a corresponding learning optimization method for cross-regional interconnected power generation and transmission system source-transmission-load joint optimization considering new energy output and load demand randomness . Background technique [0002] Cross-regional power grid interconnection is one of the important means to optimize the allocation of resources and improve utilization efficiency across the country. The construction of inter-provincial and cross-regional interconnected power grids can give full play to the adjustment of surplus and shortage of large power grids, optimal allocation of resources, backup sharing, and accident support. Benefits in many aspects, and greatly improve the consumption level of new energy. [0003] At present, there is little research and attention on the joint optimization of...

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Application Information

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IPC IPC(8): H02J3/46
CPCH02J3/46H02J2203/20
Inventor 唐昊张延王珂潘毅李怡瑾吕凯
Owner HEFEI UNIV OF TECH
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