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A Dynamic Scheduling Optimization Method for Cross-regional Interconnected Power Grid Generation and Transmission System

A technology for power generation and transmission systems and interconnected power grids, applied in the direction of circuit devices, AC network circuits, single-network parallel feeding arrangements, etc., can solve problems such as difficulty in ensuring low-cost operation of power generation and transmission systems, and achieve safe and economical operation and promote The effects of absorption and stability improvement

Active Publication Date: 2021-07-27
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 Dynamic Scheduling Optimization Method for Cross-regional Interconnected Power Grid Generation and Transmission System
  • A Dynamic Scheduling Optimization Method for Cross-regional Interconnected Power Grid Generation and Transmission System
  • A Dynamic Scheduling Optimization Method for Cross-regional Interconnected Power Grid Generation and Transmission System

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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

The invention discloses a method for dynamic scheduling and optimization of power generation and transmission systems of cross-area interconnection grids. First, a multi-area interconnection including multiple units of conventional generator sets, photovoltaic generator sets, wind turbines, rigid loads, flexible loads, and DC tie lines is established. Grid structure, establish the physical model of each unit; then establish the corresponding MDP mathematical model for the dynamic dispatching problem of the cross-regional interconnected grid; finally, use the deep Q-learning algorithm to solve the MDP mathematical model strategically. Under the obtained strategy, the dispatching agency can select a reasonable action plan according to the actual operation status of the power grid at the time of dispatching, and realize the dynamic dispatching of the power generation and transmission system of the cross-regional interconnected power grid. The invention can effectively deal with the randomness of new energy and load demand in the cross-regional interconnected power grid, promote the consumption of new energy, facilitate the safe and economical operation of the cross-regional interconnected power grid, and improve the stability of the power system operation.

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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Patent Type & Authority Patents(China)
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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