DE102005056084A1 - Electrical energy controlling and public power supply`s load structure harmonizing method, involves accomplishing power requirement prediction by central processor from sum of all decentralized available standard energies - Google Patents

Abstract

The method involves accomplishing power requirement prediction by a central processor from the sum of all decentralized available standard energies. Requirements for load shedding are developed by an access to selected local energy management systems. A connection of energy generators is initiated. A load profile and a load reducing potential are collected, recorded and utilized for optimization. The control of the energy management system is effected based on an accounting grid of energy distributors.

Description

description

The The invention relates to a method for controlling and controlling to be provided electrical energy and to harmonize the load structure a supply network through communication between energy suppliers and energy consumers or energy consumers, each of them a local energy management system with power tracking, load peak limitation and / or priority or have demand-controlled load shedding, according to the preamble of claim 1

Energy forecast and controlling systems as technical solutions for acquisition, storage, Visualization and evaluation of energy data to the energy reference depending on the customer predicted timetables the dealer Being able to regulate in a balancing group belongs to the state of the art. Such known systems are intended to dynamically optimize the Electricity supply of a customer effect and give the energy supplier or energy trader the possibility of the Unknown data of a customer load profile about it Interrogate Internet as well as balance sheet optimizing and thus cost-structuring intervene. In such systems is usually used by industrial customers a machine installed to dynamically predict energy consumption according to a daily predefined Plan to settle. Such devices For energy data acquisition, compare the respective measured values a setpoint. When crossing the Target value is according to the timetable a warning message about a remote data transmission or the Internet sold by the customer to the central system. So can at affected or identified to another customer in advance, uncritical consumers are switched off, energy supply systems of the energy trader or a customer started up or changes in the schedules of others Balancing circuit customers are made, so that in total the cumulative load profile of the balancing group remains in the specified tolerance range.

adversely in the described method for optimizing the power purchase is the default timetable for data collection and the only rigidly specified value range for the provision of energy, so that not dynamic on short-term changes can be reacted.

at the web-based energy controlling system of EBF Energiecontrolling GmbH, Heppenheim, there is the possibility of collecting, evaluating, displaying and visualizing consumption, load cycles and Costs in intranet or internet. The results obtained are visually prepared and displayed accordingly. With the help of the system immanent Software can energy consumption distributed real estate structured, evaluated and timely be visualized.

For this System exists first the need for metering and data transmission. The data transmission takes place via e-mail to a database containing the evaluation and Visualization makes. about The Internet allows the user to see the results in the database access. After calling corresponding web pages in the browser of the user The current data are read from the database and evaluated and shown graphically. Based on the also tabular evaluations it is possible, To reconstruct online load profiles So that the actual Consumption situation is recognizable. After that, it can be decided whether policy consumers are shut down or restricted in time can, whether Load shedding systems reduce the price of performance or unusual Consumption peaks occur.

To what extent e.g. shutdown of consumers is made, however, lies solely at the discretion of the decider, who assessed on the basis of the submitted and data presented. An overarching control and Control can not be made with the described system become.

to For example, reducing the electricity costs of larger consumers from the Franz Göhler GmbH & Co. KG, Nuremberg, an energy management solution offered, which continuously all connected consumers e.g. monitored in an industrial company. An integrated computer evaluates the consumption and limits Power peaks due to load shedding of consumers with less priority or low demand. Due to the short-term switch-off or delayed switch-on of consumers then, if an overrun agreed Order services may threaten Additional costs are avoided.

In summary the state of the art is in the sense of island-like optimizations individual energy consumers and energy consumers, with the energy management systems that are partly used by energy consumers self-sufficient without differentiated communication technology connection to the network operator or energy suppliers. But that is the Network operators or energy suppliers none, no complete or no current information on the current load reduction potential its customers and customers.

From the above, it is therefore an object of the invention, a further developed method for Provide control and control of electrical energy to be provided as well as to harmonize the load structure of a supply network through communication between energy suppliers and energy consumers or energy consumers, with a higher load management and control energy potential is available and increasing the reliability of the power grid by creating additional passive control power, eg Power plant failures can be claimed is possible.

The solution The object of the invention is achieved by a method according to the teaching according to claim 1, wherein the dependent claims at least expedient embodiments and represent further education.

the Method is based on a system configuration consisting of a central parent Computer system for optimizing the overall reference profile, several decentralized, self-sufficient computer-aided energy management systems with the energy consumers or energy producers and the like related Communication structure preferably on an Internet basis including associated software consists.

With the method according to the invention Can a central management to harmonize the burden structure supply networks and power plants or to optimize the reference profile of the energy supplier without serious and disturbing impairment differentiated between the production process of the local energy consumer and sure about a web-based communication system.

at a preferred embodiment does that local computer system in the energy consumers continuously Extrapolations over the expected energy consumption and sends information about the current or medium-term available load and energy reduction or connection potential to the central parent Computer system. In this system, therefore, the sum of all decentralized available Control energies.

Thereby On the one hand, the power requirements can be met in the medium term in the network and Power plant operators or the energy suppliers much more precisely determined and with automatic timely control energy requirements, within the scope of the locally available control energy reported above move, get a quick response. This requested, for sure Existing control energy is passed through by the local computer systems targeted control of the resources, i. Energy consumers Place realized.

in this connection are all predetermined or automatically by the intelligent on-site computer systems recognized boundary conditions to avoid serious effects taken into account in the respective production process.

By the possibility the intelligent and sophisticated resource control in the Special contract customers at the time increased central control energy demand takes a much more reliable Load optimization for Networks, power plants and energy suppliers than conventional ones Load shedding process.

The realized by all central and decentralized computer systems Load profiles and load reduction potentials are recorded and used for ongoing visualization as well as documentation and for a later technical or economic Nachoptimierung processed and recorded.

As well it is possible a request for load shedding and switching of the energy producers. which are also recorded. For critical conditions can an alarm management with reactions initiated on the overall process become.

According to the preceding Explanations thus leads every connected local energy management system continuously Extrapolations over an expected energy consumption in a given time unit by. This results in a load and energy reduction or Zuschaltpotential certainly.

The ascertained load and energy reduction or connection potentials are then preferably web-based via a standard data transfer procedure stellate Transfer to the central computer, whereby after automatic initial registration of the central computer, the registered Local energy management systems routinely interrogate and query this monitored by the respective local energy management systems is used to automatically initiate a new application if there is no query.

Of the Central computer leads From the sum of all decentrally available control energies, a power demand forecast through and created on the one hand about an access to selected local energy management systems requirements for load shedding as well causes On the other hand, interconnections of energy producers, where this realized load profiles and load reduction potentials recorded and recorded become.

In terms of design, the control of the connected energy management systems takes place to a balancing group of the energy supplier, whereby the local energy management systems of a balancing group and network or network section are combined on the evaluation side.

the respective local energy management system can provide information made available which maximum load reduction potential at each Energy supplier is present in the short and medium term, for the possibility a load shedding for the purpose of avoiding higher consumption ratings to realize.

The Invention will be described below with reference to an embodiment and a Figure will be explained.

The FIG. 1 shows a schematic representation of the system which with the aid of the method according to the invention can be operated.

in the System is a star-shaped Connection of the decentralized energy management systems to the centrally superordinate one Computer system provided.

at Start-up of a decentralized system, this automatically logs at the parent system at. The parent System cyclically calls all registered decentralized systems, where the call is mutually monitored becomes.

This means that the parent System feedback supervised by the individual decentralized systems; on the other hand however decentralized systems the cyclic call from the parent Check system.

At the If this call fails, the respective decentralized system is notified again at the central system.

The data transfer over a secure connection via the Internet. For safety reasons, Availability and for the purpose of cost minimization, are used in remote transmission between the parent and the decentralized computer system exclusively Internet-based standard interfaces and standard transmission media used. The connection of the communication components to the local Computer systems via conventional serial interfaces. Access protected areas can be integrated by the use of radio data transmission.

The Software for internet transmission, Local visualization and connection to the computer systems takes effect on vendor and platform independent Java and HTML and XML programming back.

It lies within the meaning of the invention that for the visualization of the im Data obtained no manufacturer-specific software needed by the user becomes. Usually can Standard browsers come into use, allowing costly software maintenance the user is omitted. An additional one The advantage here is the free choice of location for operator control and monitoring. The required communication structure is limited to the connection to any Intra or Internet connection.

in the Result of the application of the presented procedure is the network and power plant operators or the energy supplier a substantial higher Load management and control energy potential available, as this in known undifferentiated methods, e.g. through the load shedding for hours Basic control possible is because of the local computer systems also production-critical Resources are included in the process in real time can.

Of the centrally located operators also have continuous information, how much load reduction potential at the moment and in the medium term individual energy supplier and in total over all connected users is available.

On this way, the power or control energy requirements central better predicted and planned energy use more effectively become.

Ultimately resulting in area-wide use of the method, a reduction of CO ₂ emissions by avoiding switching on CO ₂ -intensive secondary and tertiary energy reserves.

Claims (4)

Method for controlling and controlling electrical energy to be provided and for harmonizing the load structure of a supply network by communication between energy suppliers and energy consumers or energy consumers, each having a local energy management system with power detection, load peak limitation and / or priority or demand-controlled load shedding, characterized in that - each connected local energy management system continuously carries out projections of an expected energy consumption in a given time unit and determines therefrom a load and energy reduction or connection potential; - The determined load and Energiereduzierungs- or Zuschaltpotentiale are transferred via a web-based star-shaped connection to a central computer by means of standard data transfer procedure, which automatically queries the central computer, the registered local energy management systems routinely and this query is monitored by the respective local energy management systems to initiate a new application in the absence of a query; - The central computer from the sum of all decentralized control energy performs a power demand forecast and on the one hand creates access to selected local energy management systems requirements for load shedding and on the other hand causes switching of energy producers, the realized load profiles and load reduction potentials are recorded and recorded and used for re-optimization , Method according to claim 1, characterized in that that the Control of the connected energy management systems related takes place on a balancing group of the energy supplier, whereby the local Energy management systems of a balancing group and network or grid section summarized on the evaluation side are. Method according to claim 1 or 2, characterized that the Load shedding by differentiated control of resources is made. Method according to one of the preceding claims, characterized characterized in that respective local energy management system information to disposal the maximum load reduction potential at the respective energy supplier present and medium term exists to the possibility a load shedding for the purpose of avoiding higher consumption ratings to realize.