Power system production simulation method with electricity quantity adjusting layer

Abstract

The invention discloses a power system production simulation method with an electricity quantity adjusting layer. The method divides a production simulation process into two layers and multiple subcycles. In the first layer, firstly distribution and dispatch of adjustable power source energy are processed during the subcycles. In the second layer, unit commitment problems are solved by the adoption of a branch and bound method during the subcycles according to the result after regulation, and after all the problems are solved in all the subcycles in sequence, a production simulation result iscounted and obtained. According to the technical scheme, the power system production simulation method with the electricity quantity adjusting layer improves production simulation calculation efficiency and ore adequately embodies the adjusting property of an adjustable power source meanwhile, the accuracy of the production simulation result is improved, and the needs for project practicability are satisfied.

Description

Technical field [0001] The invention relates to a multi-period production simulation coordination optimization calculation method, in particular to a power system production simulation process containing a power supply with a relatively strong regulating ability and a large-scale intermittent power supply. Background technique [0002] With the introduction and advancement of the concept of multi-energy complementarity, the proportion of new energy sources in the power structure is increasing, and the requirements for optimal allocation of power generation resources are gradually increasing. In view of the randomness of new energy output, it is necessary to perform intra-day peak shaving and multi-day power adjustment through a power supply capable of adjusting to ensure the reliability of power supply. In the planning stage, it is necessary to evaluate whether the capacity of the adjustable power supply is compatible with the scale of new energy from the perspective of economy a...

AI Technical Summary

Problems solved by technology

Under the current relatively mature solution algorithm and computing power, the use of the unit combination method for production simulation calculations needs to control the calculation scale, because the unit combination is a complex mixed integer programming problem, when the number of units participating in the optimization is large and the solution scale is long , the existing mathematical solution method is difficult to solve this kind of problem accurately and quickly, it takes a long time and even the optimal solution cannot be obtained

[0004] In the process of power supply planning, it is often necessary to study indicators such as large regional power grids, the annual hourly new energy acceptance capacity, and the output of each unit. It is very difficult to solve the yearly hourly unit combination. A common method is to use a relatively The method of performing multiple calculations on a small scale for the period, this method of dividing the problem reduces the solution scale of the problem, and enables the simulation of continuous production throughout the year, but this method of period division also brings corresponding problems, That is, the cross-period power distribution capability of the power supply whose adjustment capability is greater than the solution period is ignored

With the continuous improvement of the penetration rate of new energy sources, the adjustment capabilities of all power sources must be fully dispatched in the multi-energy complementary system, and ignoring this part of the adjustment capabilities may lead to power shortage or power abandonment due to unreasonable power distribution in the production simulation results Increase, etc.

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