WO2013110400A1

WO2013110400A1 - Power management in distribution systems by means of wireless communication

Info

Publication number: WO2013110400A1
Application number: PCT/EP2012/075163
Authority: WO
Inventors: Christoph Wincheringer
Original assignee: Siemens Aktiengesellschaft
Priority date: 2012-01-23
Filing date: 2012-12-12
Publication date: 2013-08-01
Also published as: DE102012200927A1

Abstract

Method and arrangement for controlling the system stability in power distribution systems, wherein in the event of a lack of electrical real power in a geographical area of the power distribution system, mobile terminals (e.g. smartphones, tablet-PCs, electric cars) that are situated in this geographical area are prompted to interrupt their storage battery charging cycle for a defined time.

Description

description

Energy management in distribution networks using wireless commu ^¬ nication

The present invention relates to a method and to ^¬ order to control the network stability in Energieverteil ^¬ networks. A smart grid is the interconnection of electricity consumers and power generators with one another in order to optimize the electricity supply and power consumption over a decentralized control system in order to ensure efficient and reliable network operation. A goal of smart grids is the provision of efficient energy transmission grids, an intelligent energy distribution, but also a simple grid integration of electromobility and intelligent buildings (eg green belts).

Smart Grids should u.a. Improve the responsiveness of markets and network management to fluctuations in the network and to fluctuations in supplier electricity prices. Another aspect of smart grids is that end users, both as consumers and as energy suppliers (e.g.

through a private photovoltaic system) can take an active role in the network.

In the energy distribution grids, the problem of the integration of renewable energies is increasingly turning up. The main problem of renewable energies is the high volatility, combined with poor predictability. So can vary widely in elementary ^¬ sudden and unforeseen weather changes wind and photovoltaic energy. on the other hand Network stability requires the constant balance between generation and consumption

So far, this problem has been solved mainly by balancing the performance of the remaining conventional and controllable generators with the output variations of renewable energy producers (primary and secondary power frequency control, P / F control). Through Smart Grids trying even producers miteinzubinden RETRY ^¬ erbarer energies into the grid stability, but the integration of energy consumers in grid stability has not systematically identified. It is an object of the present invention to provide a method for ensuring stability in energy distribution networks, in which targeted energy consumers are used. The object is achieved by a method for controlling network stability in energy distribution networks, wherein in the absence of active electrical power in a geographical area of the energy distribution network, mobile terminals located in this geographical area are caused to interrupt their battery charging cycle for a defined time ^¬ chen. In the integration of renewable energy into energy distribution networks raises in particular the problem of high volatility and the difficulty of forecasting Renew ^¬ ener- gies. The present invention allows for power fluctuations in the power grid in addition to producers (eg by adding conventional power plants or by power from a third party) and consumers in the sense of network stability "intelligent" and dynamic control. A first advantageous embodiment of the invention is as ^¬ rin that the determination of the located in the geographic area of the mobile terminal by evaluating the mobile terminals (for example smart phone) assigned IP address is set. This can eg Internet-based "utrace" about the service he ^¬ follow to locate IP addresses or via a connection to a control unit for the power distribution to utrace database. However, with the mobile device, it can also in principle (an electric vehicle E-Car A location can be done eg by GPS.

A further advantageous embodiment of the invention resides in the fact that the determination of the mobile terminals located in the geographical area takes place by evaluation of infrastructure information of a mobile radio network of the mobile terminal. For example, by GSM positioning the cell in the mobile radio network ^¬ can be determined in which a mobile terminal at the time of measurement is currently located. The location and density of base stations of the mobile network are exploited.

A further advantageous embodiment of the invention is that, via a data connection by the operator of the mobile network of the mobile terminal, the respective positive onsdaten of the mobile terminals are reported to a control unit in the energy ^¬ gieverteilnetz. This allows the operator of the power distribution network is informed about which mobile end device (eg laptop, smartphone, mobile phone) are ^¬ as a consumer in a particular area of the energy network. This information can be used by the operator of the energy distribution network to compensate for or correct power fluctuations in the power grid. A further advantageous embodiment of the invention is that the determination of the located in the geographical area the mobile terminals is performed by a satellite navigation system, the position data of the mobile terminals is ^¬ signals to a control unit in the energy distribution ge. By utrace or GSM-locating the network side sometimes only a rough determination of the geographical position of a mobile device is possible. In most cases, smartphones and tablet PCs also have the option of satellite navigation via GPS or Galileo. If a transfer of the position data to network applications is activated, a much more accurate location of the mobile device is possible. Accurate location will lend you an erroneous, inappropriate interruption to the battery charging cycle on mobile devices that are not in a specific area of the power grid.

A further advantageous embodiment of the invention is that a control command is sent to the in the geographical area befindli ^¬ chen terminal by a control unit of the power distribution network in order to interrupt the battery charging cycle of the mo ^¬ bilen device for a defined time. The control unit can use the IP address or the telephone number of the mobile device to dedicate a control command to a mobile device in a targeted manner, thus interrupting and reactivating the battery charging cycle. The activation of the battery charging cycle can thereby automatically after a certain time (advantageously, depending on the lack of electrical active power in the power grid) or by an activation signal by the control unit he follow ^¬ . IP address and / or telephone number of the mobile device can be communicated to the control unit, for example, by the operator of the mobile network, for example, together with the corre ^¬ sponding position data. A further advantageous embodiment of the invention lies in an arrangement for controlling the network stability in energy distribution networks, the arrangement comprising:

an energy distribution network with a control unit for network management in the energy distribution network;

mobile terminal as an energy consumer in the energy distribution network,

wherein, causes in a lack of electrical active power in a geographic region for the power distribution Dieje ^¬ Nigen mobile terminals which are located in this geographic area their battery charging cycle for a defined time to interrupt. Thus, in addition to producers, consumers can also be controlled "intelligently" in terms of grid stability.

Scaling the sum of the mobile terminals depending on the shortage or oversupply of electrical real power in the energy grid and thus responding to the respective requirements in the network or in one area of the network. Thus, very finely granular and spatially dedicated by the control unit can be responded to fluctuations in the network.

A further advantageous embodiment of the invention lies in the fact that the position data of the mobile terminal are reported to the control unit of the energy distribution network through a communication connection to the mobile radio network of the mobile terminal. The communication connection between a control unit of the mobile radio network and the control unit of the energy distribution network can be realized by wire or wireless (wireless, eg by a radio link). Advantageously, the communication link is reali ^¬ Siert by an already existing infrastructure of the mobile radio network. The control unit of the energy distribution network can be eg subscribers of the mobile radio network. A further advantageous embodiment of the invention is that the message of the position data of the mobile terminal is carried out at the request of the control unit. Thus, the control unit of the power distribution network is overwhelmed by reported from the mobile radio network ^¬ data and loaded. Only when Be ^¬ may (for example, if fluctuations in the network are detected) requires the control unit of the energy distribution network from the mobile ^¬ operator position and identification data from mobile devices in a specific area. This reduces data traffic and uses processor power only when needed (conserving IT resources).

A further advantageous embodiment of the invention is that to send the control unit of the power distribution network veran ^¬ let through the mobile network a control command to the located in the geographical area terminal to the battery-charging cycle of the mobile device in response to the lack of electrical active power in the geographical Be - rich break. It can thus be the infrastructure of

Mobile communications network are utilized to com municate ^¬ between the control unit of the power distribution network and the mobile devices. It is also conceivable that the mobile devices are equipped with an app provided by the energy network operator (application downloadable by the Internet) for controlling the battery charging cycle. Via this app, the battery charging cycle of the mobile device can be controlled by the energy network operator by means of appropriate signaling (eg via the Internet). Depending on the business model of the energy network operator, users of this application may be incentivized by the energy ^grid operator.

An embodiment of the invention is illustrated in the drawing and will be explained below. Showing:

1 shows an exemplary arrangement for controlling the network stability in energy distribution networks.

The realization of smart grids places high demands on the underlying energy grid. On the one hand, up-to-date knowledge of feed-in, consumption and load is necessary in order to be able to take targeted control and regulatory measures. The integration of renewable energies with their high volatility and poor predictability as ^¬ at a special challenge. Furthermore, the implementation of smart grids requires close Informationsaus ^¬ exchange between the components involved and thus a powerful information and communication technology and related infrastructure. In smart grids many small decentralized Stromer ^¬ producers of renewable energies may bundled into common power plants and organized in a higher-level network management. On the consumer side, intelligent electricity meters, so-called "smart meters" are another possible component of a smart grid. "Smart Meters" enable remote meter reading of consumption and a short-term reaction to fluctuating electricity prices.

The network management from smart grid aims to enable regula ^¬ gen and controls to the lowest energy network level. Furthermore, electric cars should be integrated into smart grids both as consumers and as energy consumers. to become. The batteries of electric cars can also act as energy storage in the smart grid.

Smart grids enable optimized management of energy generation, energy consumption and energy storage in order to achieve a balance in the power grid. For this is a necessary by ^¬ continuous communication capability from the power plant to a ^¬ individual consumers. Individual approaches or individual technologies for smart grids exis ^¬ animals already, or are in trials (eg smart meters). The management of electricity transmission networks is already well ^¬ entirely automated. In this way, emergency ^{mechanisms are} automatically activated in the event of sudden power blackouts.

Smart grids are thus the smart grid, which by a coordinated network management means timely and bidi ^¬ rektionaler communication between network components (infrastructure), producers, consumers, and storage means a energy- and cost-efficient system operating under support alarm ^¬ zen to provide a fail-safe and balanced-balance sheet network ready ,

A smart grid refers addition to institutional energy production systems (eg, power plants, public utilities) and industrial consumers in particular private consumers such as heat pumps ^¬, hot water tank, freezer, car batteries, etc., as well as private sources (eg private photovoltaic system) in the network management with one. A prerequisite for the operation of smart grids is the ability to retrieve and process information (eg load flow data, utilization data) from the individual network elements involved in real time. This makes it possible to immediately recognize fluctuations in performance and to react to them. It is still possible to produce a homogeneous consumption in the network even when using principally inhomogeneous producers (eg wind power, solar plants) and consumers (eg electric cars). As energy storage storage power plants but also decentralized storage such as vehicle batteries can be used. The data transmission between the components of a smart grid can be done eg via ADSL connections.

FIG. 1 shows an exemplary arrangement for controlling network stability in power distribution networks SMG. The arrangement comprises an energy distribution network SMG with power line L and

Power poles Ml to M5, and a control unit SE for network ^¬ management in the power distribution network SMG. The control unit SE comprises central and / or decentralized computing units and data storage units DB as well as mechanisms for automatic

Detection of load fluctuations and power outages (blackouts) in the power grid SMG. Furthermore, the arrangement comprises mobile terminals MG (eg laptop, smartphone) as energy consumers in the energy distribution network SMG, wherein in a detected by the control unit SE lack of electrical active power in a geographical area of the energy distribution network SMG those mobile terminals MG, which are located in this geographical area , are caused to interrupt their battery charging cycle for a defined time, ie the battery AK1 of a mobile terminal MG located in the corresponding geographical area is caused not to charge.

Advantageously, the assembly includes a Kommunikati ^¬ onsverbindung the mobile radio network MFN of the mobile terminal MG. Either through this communication connection or through an Internet access (eg via wireless LAN (IEEE 802.11) and ADSL), the position data of the mobile terminal MG ge ^¬ reported to the control unit SE of the power distribution network SMG. Advantageously, the message of the positi- onsdaten of the mobile terminal MG on request (on mand mand) of the control unit SE. The control unit SE of the energy ^¬ distribution network SMG sends, for example, over the wireless network MFN or the Internet, a control command to the rich located in the geographical loading terminals MG to the charging cycle of the battery ^¬ mulators AK1 the mobile device MG depending on the Man ^¬ gels of electrical To interrupt active power in a corresponding geographical area. The control unit SE of the energy distribution network SMG can

Control command also send to the located in the geographical area electric cars eCar to interrupt the charging cycle of the battery ^¬ mulator AK2 of the electric car eCar as a function of man ^¬ gel of active electrical power in a corresponding geographical area.

The charge cycle of a battery Akl, AK 2 may be, for example, controlled by ei ^¬ nen Microchip and controlled. The position of an electric car eCar and / or a mobile device MG can be done for example via satellite navigation via GPS or Galileo or a similar system. Most smart phones and tablet PCs and electric cars have heutzu ^¬ daily applications for satellite navigation.

The main problem with the integration of renewable energy into a SMG electricity grid is the high volatility associated with worse

Predictability. For example, wind and photovoltaic energy can fluctuate greatly due to sudden and unexpected weather changes. On the other hand, grid stability requires the constant balance between generation and consumption. So far, this problem has been solved mainly by balancing the performance of the remaining conventional and controllable producers with the fluctuations in output of renewable energy producers (and consumers) (P / F grid control).

Through Smart Grids can also attempts to control the He ^¬ producers of renewable energy and the consumer in terms of grid stability "intelligent". A growing presence in some electrical consumers are wirelessly networked

These are usually either via LAN (IEEE 802.3) or wireless LAN (IEEE 802.11) to an ADSL router with access point or a hotspot

or to a mobile network via LTE, HSPA / HSDPA / HSUPA, UMTS or GPRS / EDGE.

In both cases, a coarse determination of the geographical position is possible on the network side. For example, by evaluation of the global IP address (for example by means of utrace) or by the location information of the base station.

In most cases, smartphones and tablet PCs also have the option of satellite navigation via GPS or Galileo. If a transfer of the position data to network applications

is activated, even a much more accurate location is possible ^¬ .

This location feature is now being used to increase the battery charging behavior of wirelessly connected smartphones and tablet / notebook computers.

Control computer in the sense of stability of the electrical Verteilnet ^¬ zes. In the case of a lack of electrical real power in a distribution network, distribution network smartphones and tablet / notebook

Computer causes by control command that the battery charging cycle for a certain time is interrupted. This control command is e.g. via Internet Protocol (IP) the

Notified smartphones and tablet / notebook computer. Instead, it can also be an underlying cellular protocol

to be used.

The innovative step lies in particular in the integra- tive and coordinated use:

1. the network connection existing to the individual terminal (smartphones and tablet / notebook computer);

2. the described location possibility;

3. the time flexibility of the charging of the electrical charging energy through the built-in rechargeable battery of smartphones and tablet PCs;

4. a data connection between local distribution network operators and the Internet or local mobile network operators for controlling the active power consumption of a very large number of electrical consumers (eg smartphones, tablet PCs, electric cars). The data connection between distribution network operators and mobile network operators can be realized via a data-related connection of control units (eg control centers in the respective network) of the energy distribution network and the mobile radio network, eg via an SSL-secured TCP / IP connection with corresponding infrastructure. The data connection between the power distribution network and the mobile devices advantageously takes place via already existing connections (eg via a control command which is transmitted via the mobile radio network, eg via SMS). Transfer of the energy network operator Gesen ^¬ det to the mobile device.

The benefits include u.a. The fact that the end user side no complicated additional hardware with individual configuration (as in smart grids) is required.

Method and arrangement for controlling the grid stability in power distribution networks, wherein in a lack of electrical real power in a geographical area of the energy distribution network mobile devices (eg smart phones, tablet PCs, electric cars), which are located in this geographical area, be prompted their battery charging cycle to interrupt for a de ^¬ finierte time.

Claims

claims

1. A method for controlling network stability in power distribution networks (SMG), wherein in the event of a lack of active electrical power in a geographical area of the energy distribution network (SMG), mobile terminals (eCar, MG) located in this geographical area are caused to lose their battery power. Interrupt charging cycle for a defined time.

2. The method of claim 1, wherein the determination of located in the geographical area mobile terminals (eCar, MG) by evaluation of the mobile terminals (eCar, MG) assigned IP address.

3. The method of claim 1, wherein the determination of located in the geographical area mobile terminals (eCar, MG) by evaluating infrastructure information of a mobile network (MFN) of the mobile terminal (eCar, MG) he follows ^¬ .

4. The method according to any one of the preceding claims, wherein via a data connection from the operator of the mobile network (MFN) of the mobile terminal (eCar, MG) the respective position data of the mobile terminals to a control unit in the energy distribution network (SMG) are reported.

5. The method according to any one of the preceding claims, wherein the determination of the located in the geographical area mobile terminals by a satellite-based navigation system (GPS), wherein the position data of the mobile terminals (eCar, MG) is reported to a control unit in the power distribution network (SMG).

6. The method according to any one of the preceding claims, wherein by a control unit of the power distribution network (SMG) a control command to the located in the geographical area terminals (eCar, MG) is sent to interrupt the battery charging cycle of the mobile device for a defined time.

7. Arrangement for controlling grid stability in power distribution grids (SMG), the arrangement comprising:

an energy distribution network (SMG) with a network management control unit in the energy distribution network (SMG);

mobile terminal as an energy consumer in the energy distribution network (SMG),

wherein, in the absence of real electrical power in a geographical area of the power distribution network (SMG), the mobile terminals (eCar, MG) located in that geographical area are caused to interrupt their battery charging cycle for a defined time.

8. Arrangement according to claim 7, wherein by a communication onsverbindung to the mobile network (MFN) of the mobile terminal

(eCar, MG) the position data of the mobile terminal (eCar, MG) to the control unit (SE) of the power distribution network (SMG) are reported.

9. Arrangement according to claim 8, wherein the message of the position data of the mobile terminal (eCar, MG) on request of the control unit (SE).

10. Arrangement according to one of claims 7 to 9, wherein the control unit (SE) of the energy distribution network (SMG) causes via the mobile network to send a control command to the located in the geographic area ^¬ terminal devices (eCar, MG) to the battery charging cycle of the mobile device (eCar, MG) in dependence of the lack of electrical real power in the geographical area.