Security constraint-based real-time generation planning method

Abstract

The invention discloses a security constraint-based real-time generation planning method. On the basis of a result of a day power generation plan, a turbine generator output plan of each time period in future 30 minutes is a capacity plane of a unit at each stage within 30 minutes in future is complied in an optimized way by combining the ultra-short period load prediction within 30 minutes and taking the security constraint of a power grid into consideration. By the method, the turbine generator output is moderately adjusted according to actual situations by fully utilizing the target and the characteristics of a real-time generation plan on the basis of carrying on the global optimum of the day power generation plan; the power limit in an actual system can be effectively eliminated or retarded; and the safe, excellent and economic operation of a power system is ensured.

Description

technical field [0001] The invention belongs to the field of power system scheduling planning, and in particular relates to a real-time power generation planning method based on safety constraints. Background technique [0002] The real-time power generation planning function is based on ultra-short-term load forecasting, considering various constraints such as unit operation constraints and network security constraints, and optimizes the compilation of unit output plans for each period of time in the next 30 minutes. The interval between periods is 5 minutes, and it only distributes load among operating units. , do not start and stop adjustments to the unit. [0003] The real-time power generation plan needs to be coordinated with the intraday power generation plan. The so-called intraday power generation plan refers to optimizing the unit plan from the next 1h to the next 13h. Compared with real-time power generation planning, intraday power generation planning considers ...

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Problems solved by technology

[0004] In actual dispatching operations, the quota constraints of transmission sections, branch circuits, transformers and other transmission components are often important factors that lead to the inability of power generation plan optimization to converge, because there are indeed some situations where network security constraints cannot be satisfied, such as peak hours of power consumption. There are short-term off-limit operations of some transmission sections. In order to eliminate the over-limit operation, the power generation plan will use less sensitive units to make large-scale adjustments, which will affect the stable operation of dispatching; and if the units participating in the adjustment are unable to correct the over-limit operation, it will cause unnecessary Feasible solution

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