The invention discloses a photovoltaic power generation automatic voltage control method The photovoltaic power generation automatic voltage control method includes that voltage control modeling is carried out on 110kV and 35kV photovoltaic power stations, then AVC (automatic voltage control) master stations and AVC substations of the photovoltaic power stations bidirectionally interact with oneanother, global reactive power optimization on the photovoltaic power stations is computed, voltages of photovoltaic power generation collecting regions are quickly automatically controlled, and whole-network reactive power voltage optimization control targets are given by tertiary voltage control in AVC systems of dispatching centers after voltage safety operation of photovoltaic power generationregions is considered and are used as control targets for center bus of photovoltaic collecting regions; reactive power of the various photovoltaic power stations in control regions is controlled bymeans of secondary voltage control on the photovoltaic power generation regions, so that the voltage control targets for the center bus of the photovoltaic collecting regions can be achieved The photovoltaic power generation automatic voltage control method has the advantages that the photovoltaic power generation automatic voltage control method can adapt to large-scale photovoltaic power generation grid-connected automatic voltage control systems, and automatic closed-loop control can be carried out on voltages of the photovoltaic power stations and accessed power grid regions; a system canaccess 100 closed-loop control photovoltaic power stations

Photovoltaic power generation automatic voltage control method

The invention discloses a 10kV bus voltage optimization method and system capable of improving the voltage qualification rate of a power distribution network and a medium. The optimization method comprises the following optimization steps: determining a calculation reference day of a target 10kV bus; respectively counting and calculating the normal, overvoltage and undervoltage proportions of thetransformer court voltage in a power supply area in the reference day; determining the distribution network voltage condition in the target 10kV bus power supply range according to the normal, overvoltage and undervoltage proportions; and calculating a periodic target 10kV bus voltage target value according to the distribution network voltage condition generation cost in the target 10kV bus powersupply range. According to the method and the system, the purpose of improving the voltage qualification rate of the power distribution network can be achieved by optimizing the voltage of the 10kV bus, the voltage qualification rate of the 10kV bus is not reduced, the voltage qualification rate of the power distribution network is improved, reactive resources of a main power grid of 10kV and above are fully utilized, and the voltage regulation and control cost of the power distribution network is reduced.

10kV bus voltage optimization method and system capable of improving voltage qualification rate of power distribution network, and medium

The invention discloses a power system secondary voltage control method and system based on track sensitivity. The method comprises the steps of determining a reactive adjustment amount of a control variable by coordinating the secondary voltage control, and then evaluating whether the power grid voltage exceeds a voltage stability limit value or not after the coordinated secondary voltage controlis executed based on a key fault set; taking the minimum deviation between the voltage and the voltage stability limit value and the minimum control cost as a control target function, and based on the track sensitivity, establishing a quadratic programming model, determining the reactive adjustment amount of the control variable, and combining the reactive power adjustment amount of the control variable with the original reactive power adjustment amount of the control variable, correcting the constraint conditions in the coordinated secondary voltage control, and determining the reactive power adjustment amount of the control variable through the coordinated secondary voltage control until the power grid voltage is evaluated not to exceed the voltage stability limit value after the coordinated secondary voltage control is evaluated based on the key fault set. According to the present invention, the safety check of power grid disturbance voltage recovery is added on the basis of the original coordinated secondary voltage control, and long-term stability of the system voltage is improved.

Power system secondary voltage control method and system based on track sensitivity

The invention relates to the technical field of automatic voltage control systems of power systems, and discloses a three-stage voltage control method and system and a computer readable storage medium. The three-stage voltage control method comprises the following steps: S11, acquiring the active power of a transmission line of the system; S12, calculating the active power deviation of the systemaccording to the acquired active power of the transmission line; and S13, executing three-stage voltage control once when the calculated active power deviation of the system is greater than or equal to a preset power deviation threshold, and re-executing S11 after an automatic voltage control execution period. Three-stage voltage control with variable control period is realized, the problem that reactive power regulation equipment frequently acts due to the use of fixed time interval in the execution of three-stage voltage control is avoided, and the number of actions of the reactive power regulation equipment is reduced. Therefore, the loss of the reactive power regulation equipment is reduced, and the service life is prolonged.

Three-stage voltage control method and system and computer readable storage medium

The invention discloses a vehicle-mounted hybrid power supply energy management control method based on nonlinear programming. The method comprises the steps of establishing a model of a storage battery and a supercapacitor; establishing a first objective function according to the distribution irregularity of the output current of the storage battery, and establishing a second objective function according to the charge and discharge energy of the supercapacitor in the driving period; setting the voltage constraint condition of the supercapacitor and the current constraint condition of the direct current bus side supercapacitor, and enabling the capacity of the supercapacitor to be minimized according to the voltage constraint condition of the supercapacitor; establishing a third objectivefunction and a constraint condition of the third objective function based on the nonlinear programming theory; and constructing a lagrangian function, acquiring direct current bus current in real time, and solving the lagrange function based on a convex hypothesis, wherein the optimal solution is used as the reference current output by the storage battery, so that it is ensured that the storage battery works in a constant-current mode, the storage battery is controlled to meet the energy requirements of the load of the electric automobile, and the power requirement of the load is provided by the supercapacitor.

Vehicle-mounted hybrid power supply energy management control method based on nonlinear programming

The invention discloses a secondary power plant control method of AVC (automatic voltage control). The method comprises the following steps of S1, obtaining the sensitivity matrix of the node voltageabout the reactive power according to an extended tidal current equation of a whole network; building a secondary voltage control model of a power plant optimized reactive power control strategy according to the obtained sensitivity matrix; S2, solving the secondary voltage control model; then, obtaining a corresponding control strategy according to the solved result; issuing the control strategyto an AVC sub station; S3, performing voltage control by the AVC sub station according to the selected corresponding control strategy. The method has the advantage that the power network security, theeconomy and the high quality can be effectively coordinated.

Secondary power plant control method of AVC (automatic voltage control)

The invention relates to a three-level reactive voltage optimized control method of an AVC (Automatic Voltage Control) system. The method comprises the steps of S1, artificially specifying multiple default voltage setting value curves for a pilot bus of each secondary voltage control area; S2, acquiring real-time pilot bus voltage data; S3, obtaining a state estimation result; S4, evaluating the state estimation result; if a residual is larger than one threshold, determining that the result is unreliable, and executing the step S5; if the residual is not larger than one threshold, determiningthat the result is reliable, and executing the step S6; S5, using an average voltage setting value curve of the control area as a setting reference value of a pilot bus voltage value controlled outputto secondary voltage; S6, executing optimal power flow calculation, and obtaining a pilot bus voltage value result; S7, converging the pilot bus voltage value result obtained through optimal power flow calculation, setting a voltage setting value as Vmeas+Vopf-Vse; if the pilot bus voltage value result obtained through optimal power flow calculation cannot be converged or optimal power flow calculation is failed, taking one from the default setting value curves, and using as the setting reference value of the pilot bus voltage value according to a load condition at the current day.

Three-level reactive voltage optimized control method of AVC (Automatic Voltage Control) system

The invention relates to an automatic voltage control system. The system mainly comprises a substation system and a main station system. The substation system is a front part of a power grid reactivevoltage optimization control system, and is installed in a power plant control room; the reactive power output of each unit is controlled through optimization, and the voltage of the high-voltage sidenode of the power plant is adjusted in real time; each substation is provided with a node, an upper computer is arranged on the node; and a lower computer corresponding to each generator is hung on the upper computer. The main station system is a provincial electric power scheduling communication center and is connected with the upper computer of the substation through an RTU channel and used forreading the real-time information uploaded by the sub-station system and sending a control instruction to the sub-station.

Automatic voltage control system

Popular Tasks used by Researchers

How can I help with your research?

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

We encountered an error while loading the panel. Please try refreshing the page.

Something went wrong

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

Anyone with the link can view this chat. You can switch it back to private anytime.

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Sun Pei

Author Tools

Chat about Author

Papers

Secondary power plant control method of AVC (automatic voltage control)

Three-level reactive voltage optimized control method of AVC (Automatic Voltage Control) system

Automatic voltage control system