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Flexibility improves quantitative analysis methods, devices and systems
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A quantitative analysis and flexibility technology, applied in the computer field, can solve the problems of not considering the timing operation characteristics of energy storage equipment, the impact of quantitative analysis process, and the lack of flexibility evaluation methods of power distribution system, etc.
Active Publication Date: 2022-04-26
STATE GRID ENERGY RES INST +2
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Problems solved by technology
In terms of application scenarios, quantitative analysis is mainly carried out for systems in normal operation, and the research on the degree of change and mechanism analysis of operational flexibility after adding controllable equipment is still in its infancy; in terms of evaluation methods, the existing evaluation methods mainly use the index of insufficient flexibility to describe The degree of imbalance between supply and demand of the power distribution system lacks a flexibility evaluation method for the flexible operation of the power distribution system
At the same time, the existing methods do not consider the timing operation characteristics of energy storage devices, and different timing operation strategies of energy storage will affect the quantitative analysis process of flexibility improvement
Therefore, for power distribution systems in flexible operation scenarios, there is an urgent need for a quantitative calculation method that considers the degree of operational flexibility improvement of energy storage timing characteristics to solve the problem of active power distribution systems with high penetration rates of distributed power sources. Quantification of operational flexibility improvement
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Embodiment 1
[0088] Embodiments of the present invention provide a flexibility improvement quantitative analysis device that considers the impact of energy storage sequence operation, such as Figure 7 As shown, it includes: a memory 70, a processor 72, and a computer program stored on the memory 70 and operable on the processor 72. When the computer program is executed by the processor 72, the following method steps are implemented:
[0089] Step 101, inputting system parameters into the selected radially operated active power distribution system, wherein the system parameters specifically include: the timing operation strategy of the newly added energy storage device; in the embodiment of the present invention, the system parameters may also include :
[0090] Line parameters, load level, network topology connection relationship, system node voltage safety range and branch current limit, access location and capacity of uncontrollable distributed power, load demand at each time period, fl...
Embodiment 2
[0104] An embodiment of the present invention provides a computer-readable storage medium, where a program for realizing information transmission is stored on the computer-readable storage medium, and when the program is executed by the processor 72, the following method steps are implemented:
[0105] Step 101, inputting system parameters into the selected radially operated active power distribution system, wherein the system parameters specifically include: the timing operation strategy of the newly added energy storage device; in the embodiment of the present invention, the system parameters may also include :
[0106] Line parameters, load level, network topology connection relationship, system node voltage safety range and branch current limit, access location and capacity of uncontrollable distributed power, load demand at each time period, fluctuation coefficient of distributed power output, new storage The access location, capacity, and parameters of the functional equ...
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Abstract
The invention discloses a flexibility improvement quantitative analysis method, device and system considering the impact of energy storage time sequence operation. The method includes: inputting system parameters into a selected radially operated active power distribution system; The structure and system parameters of the power distribution system are calculated by time series power flow to obtain the initial operation status of the active power distribution system in each period; according to the time series operation strategy of the new energy storage equipment and the initial operation status of the active power distribution system in each period, the The time series quantitative analysis model of operation flexibility; according to the time series quantitative analysis model of operation flexibility, the output values of randomly distributed controllable distributed power sources, reactive power compensation devices and intelligent soft switches are generated, and the operation that meets the system's safe operation constraints is screened Strategy set: According to the timing operation strategy of the new energy storage equipment and the operation strategy set of controllable distributed power supply, reactive power compensation device and intelligent soft switch, the flexibility improvement index of the active power distribution system is calculated.
Description
technical field [0001] The invention relates to the field of computer technology, in particular to a flexibility improvement quantitative analysis method, device and system considering the impact of energy storage time sequence operation. Background technique [0002] As distributed generators (Distributed Generators, referred to as DGs) are widely connected to the power distribution system, the power distribution system has gradually transformed into an active distribution network (active distribution network, referred to as for ADNs). In actual operation, in order to cope with a wide variety of operating requirements and operating scenarios, the active power distribution system must have the ability to coordinate flexible resources and adjust the operating state, that is, operational flexibility. [0003] In the active power distribution system, the uncertainty and volatility are further intensified, which puts forward higher requirements for the flexible operation of the...
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