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Power distribution network congestion management method based on technical virtual power plant

A virtual power plant and management method technology, applied in system integration technology, electrical digital data processing, information technology support systems, etc., can solve problems such as affecting users' power transaction plans, disrupting the safe and efficient operation of distribution networks, and blocking distribution networks.

Inactive Publication Date: 2019-10-18
HOHAI UNIV
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Problems solved by technology

[0003] When the distribution network power transmission requirements are greater than the actual transmission requirements, the distribution network congestion phenomenon will occur, affecting the normal power transaction plan of users, and destroying the safe and efficient operation of the distribution network

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  • Power distribution network congestion management method based on technical virtual power plant
  • Power distribution network congestion management method based on technical virtual power plant
  • Power distribution network congestion management method based on technical virtual power plant

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Embodiment Construction

[0101] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0102] A method for managing distribution network congestion based on a technology-based virtual power plant described in the present invention, such as Figure 7 shown, including the following steps:

[0103] Step 1, set the original data, use the Monte Carlo method to generate photovoltaic scenarios to describe the uncertainty of photovoltaic output; construct a VPP economic dispatch model with the optimization goal of maximizing VPP profits; construct model constraints; the original data include: distribution network Parameters, VPP aggregation unit parameters, market electricity price parameters, and photovoltaic output forecast data; the constraints include: gas turbine constraints, interruptible load constraints, EV charging station constraints, transferable load constraints, VPP transaction power constraints, and VPP po...

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Abstract

The invention discloses a power distribution network congestion management method based on a technical virtual power plant, and the method comprises the following steps: building a VPP economic dispatching model taking the maximum VPP profit as an optimization target according to original data, and solving the model to obtain a dispatching scheme of each aggregation unit; constructing a power flowcalculation optimization model, obtaining the voltage and phase angle of each node of the power distribution network, calculating the power flow of each line, and judging whether the power flow of each line exceeds the limit; and if out-of-limit occurs, establishing a VPP security correction optimization model by taking the minimum adjustment node number and the minimum system adjustment amount as optimization objectives, and converting a multi-objective optimization problem into a single-objective optimization problem with priorities by introducing weights and maximum values to obtain the correction amount of each aggregation unit. The method can effectively eliminate the line blocking problem.

Description

technical field [0001] The invention belongs to the field of power system dispatching, in particular to a method for managing distribution network congestion based on a technology-based virtual power plant. Background technique [0002] With the rapid development of science and technology, the proportion of distributed power generation in the regional power grid is also increasing, and the impact of the instability of its output power on the power grid is also increasing. The virtual power plant (Virtual Power Plant, VPP) is an effective form to solve the above problems. Distributed energy generation is extremely volatile, and users make power generation plans based on their own economic interests, which will lead to large-scale load accumulation, make the power flow of distribution network lines exceed the limit, and cause line congestion, which will affect the safe and stable operation of the entire power grid. . Therefore, it is necessary to study the safety correction ...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06G06F17/50
CPCG06Q10/04G06Q10/06313G06Q10/06315G06Q50/06G06F30/20Y04S10/50Y02E40/70
Inventor 孙国强钱苇航卫志农臧海祥
Owner HOHAI UNIV
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