CN-122000920-A - Automatic generation system for typical operation mode

CN122000920ACN 122000920 ACN122000920 ACN 122000920ACN-122000920-A

Abstract

The invention discloses an automatic generation system of a typical running mode, which comprises an initial running mode acquisition module, a typical power grid running mode programming target setting module, a typical power grid running mode adjustment principle generation module and a typical power grid running mode programming module; the invention can obviously improve section conveying capacity and economy on the premise of ensuring safety, reserves sufficient adjustable space for new energy consumption, and provides a systematic and intelligent solution for safe and economical operation of a novel power system.

Inventors

ZHANG JINBIN
CHEN JIALIN
ZHANG TONGZUN
LIU SHUANG
ZHOU NING

Assignees

国网重庆市电力公司

Dates

Publication Date: 20260508
Application Date: 20260128

Claims (10)

1. The system is characterized by comprising an initial operation mode acquisition module, a typical power grid operation mode programming target setting module, a typical power grid operation mode adjustment principle generation module and a typical power grid operation mode programming module; The initial operation mode acquisition module acquires a section with the largest time length of the past year and the largest ratio as an initial power grid operation mode; The typical power grid operation mode programming target setting module takes safety, economy, adjustability and usability as programming targets to construct a multi-target collaborative optimization framework; The typical power grid operation mode adjustment principle generation module is used for generating a typical power grid operation mode adjustment principle; and the typical power grid operation mode programming module solves the multi-objective collaborative optimization framework by taking the typical power grid operation mode adjustment principle as constraint, and outputs the typical power grid operation mode meeting the programming objective.
2. The system for automatically generating a typical operation mode according to claim 1, wherein the security is restricted by N-1 qualification; The economy aims at the minimum network loss rate; The adjustability aims at the maximum new energy absorbing capacity of the conventional adjusting power supply, and the adjusting margin of the frequency voltage and the connecting line is larger than a preset value; Availability is targeted at maximum genset output capacity and grid delivery capacity.
3. The system for automatically generating a typical run mode according to claim 2, wherein the network loss rate is ; The total active loss of the whole network is; is the reference power.
4. The system for automatically generating a typical run mode according to claim 2, wherein the power grid is capable of delivering ; A generalized node of the generator set in the transmitting end control area; the load generalized node is a load generalized node of a receiving end control area; power generated by the generator in the end-feeding control area, Power consumed by the load of the receiving end control area.
5. The system for automatically generating a typical run mode according to claim 1, wherein the multi-objective collaborative optimization framework comprises constraints and objective functions; the constraint condition of the multi-target collaborative optimization framework is N-1 security check constraint; The multi-objective collaborative optimization framework aims at the maximum comprehensive score; The comprehensive score is a weighted sum of usability, adjustability and economical index; the usability index is determined by the output capacity of the generator set and the power grid conveying capacity, the economical index is determined by the loss rate, and the adjustability is determined by the new energy consumption capacity of the conventional adjusting power supply and the adjusting margin of the frequency voltage and the connecting line.
6. The system for automatically generating a typical power grid operation mode according to claim 1, wherein the typical power grid operation mode adjustment principle comprises a water and electricity priority principle, a regulating capacity priority principle, an equal micro-increment rate and economic distribution principle, a standby uniform distribution principle, a heavy load area margin reservation principle and a proper ring network unlocking principle.
7. The automatic generating system according to claim 6, wherein the water and electricity priority principle in the water-rich period is that the water and electricity input priority is higher than that of other types of generators in the water-rich period or in the season of water and electricity generation; The priority principle of the regulating capability refers to that on the basis of meeting the load requirement, the starting priority of the thermal power generating unit is determined according to the size of the regulating capability, and the larger the regulating capability is, the higher the starting priority is; The principle of equal micro-increment rate and economic distribution means that on the premise of meeting safety constraint, the output of all online units is uniform, and the coal consumption micro-increment rate tends to be consistent; The principle of uniform distribution of standby refers to that when equipment is arranged to be subjected to power failure maintenance or used as cold standby, the equipment subjected to power failure maintenance or used as cold standby is uniformly distributed geographically and electrically; The principle of reserving the margin of the heavy load area refers to that for the key transmission section of the heavy load area, the reserved spare capacity is larger than 20% of the maximum capacity; The principle of properly unlocking the ring network means that the number of the electromagnetic ring networks is minimum on the premise of meeting the N-1 safety.
8. The system for automatically generating a typical operating mode according to claim 7, wherein the thermal power generating unit adjustment capability comprises an output range size and a climbing rate.
9. The system for automatically generating a typical operating mode according to claim 1, wherein when the typical power grid operating mode programming module solves the multi-objective collaborative optimization framework, an SC-OPF solver is utilized to generate a generator output combination by taking an initial power grid operating mode as a starting point and taking a maximum power grid conveying capacity as a target.
10. The system for automatically generating the typical running mode according to claim 9, wherein when the SC-OPF solver is used for solving the maximum power grid conveying capacity, after each generator output combination is generated, load flow calculation is carried out, feasibility judgment is carried out, and generator output combinations without feasibility are deleted; And under the condition that the line output is not out of limit, the power grid conveying capacity cannot be increased continuously, and the solver stops calculating and reports the result.

Description

Automatic generation system for typical operation mode Technical Field The invention relates to the field of electric power, in particular to an automatic generation system of a typical operation mode. Background With the continuous deepening of high-proportion new energy grid connection and power market innovation, the operation mode of a modern power grid is increasingly complex, and higher requirements are put on the scientificity, the high efficiency and the adaptability of an operation mode programming method. Traditional power grid operation mode programming mainly relies on manual experience, and a final scheme is determined through successive trial and error and repeated verification. The method is time-consuming and labor-consuming, and is difficult to realize systematic synergy and quantitative trade-off among multiple targets of safety, economy, usability, adjustability and the like. Specifically, the conventional method is often focused on meeting the most basic safety constraint, but the comprehensive optimization capability in aspects of improving the section conveying capability, reducing the network loss, adapting to new energy fluctuation, reserving adjustment margin for scheduling operation and the like is obviously insufficient, and the method cannot adapt to the multiple requirements of the novel power system on the operation mode flexibility, economy and reliability. Therefore, an intelligent programming strategy capable of coordinating multiple targets in a system and having closed-loop optimization capability is needed, so that economical efficiency, new energy consumption capability and operation adjustment elasticity of a power grid are obviously improved on the premise of ensuring safe and stable operation of the power grid, and key technical support is provided for safe, efficient and flexible operation of a novel power system. Disclosure of Invention The invention aims to provide a typical running mode automatic generation system which comprises an initial running mode acquisition module, a typical power grid running mode programming target setting module, a typical power grid running mode adjustment principle generation module and a typical power grid running mode programming module; The initial operation mode acquisition module acquires a section with the largest time length of the past year and the largest ratio as an initial power grid operation mode; The typical power grid operation mode programming target setting module takes safety, economy, adjustability and usability as programming targets to construct a multi-target collaborative optimization framework; The typical power grid operation mode adjustment principle generation module is used for generating a typical power grid operation mode adjustment principle; and the typical power grid operation mode programming module solves the multi-objective collaborative optimization framework by taking the typical power grid operation mode adjustment principle as constraint, and outputs the typical power grid operation mode meeting the programming objective. Further, the security takes the qualification of N-1 as a constraint condition; The economy aims at the minimum network loss rate; The adjustability aims at the maximum new energy absorbing capacity of the conventional adjusting power supply, and the adjusting margin of the frequency voltage and the connecting line is larger than a preset value; availability is targeted at maximum genset output capacity and grid delivery capacity. The grid transport capacity was calculated using PTDF. Further, the net loss rate;The total active loss of the whole network is; is the reference power. Further, grid transport capacity;A generalized node of the generator set in the transmitting end control area; the load generalized node is a load generalized node of a receiving end control area; power generated by the generator in the end-feeding control area, Power consumed by the load of the receiving end control area. Further, the multi-objective collaborative optimization framework comprises constraint conditions and objective functions; the constraint condition of the multi-target collaborative optimization framework is N-1 security check constraint; The multi-objective collaborative optimization framework aims at the maximum comprehensive score; The comprehensive score is a weighted sum of usability, adjustability and economical index; the usability index is determined by the output capacity of the generator set and the power grid conveying capacity, the economical index is determined by the loss rate, and the adjustability is determined by the new energy consumption capacity of the conventional adjusting power supply and the adjusting margin of the frequency voltage and the connecting line. Furthermore, the typical power grid operation mode adjustment principle comprises a water and electricity priority principle in a water-rich period, an adjustment capacity priority principle, an equal mic