WO2019192915A1

WO2019192915A1 - Measuring unit, control unit and method for controlling the reception of mains power

Info

Publication number: WO2019192915A1
Application number: PCT/EP2019/057804
Authority: WO
Inventors: Ralf Schmidt-Wachholz; René Schmidt; Sylvia Schmidt
Original assignee: RS Utility Service UG (haftungsbeschränkt)
Priority date: 2018-04-01
Filing date: 2019-03-27
Publication date: 2019-10-10
Also published as: DE102019107958A1

Abstract

The invention relates to a measuring unit at a discharging point of a power network providing electrical mains power, a control unit for controlling the receiving quantity of mains power of a consumption device and a method for controlling the receiving quantity of mains power of a consumption device.

Description

Measuring unit, control unit and method for controlling the recording

network energy

Description Introduction

The invention relates to a measuring unit according to claim 1, a control unit according to claim 2 and a method for controlling the absorption of network energy according to claim 3.

In a power grid that supplies electrical power to various points of sale, the grid voltage and frequency is dependent on the ratio of the total injected to the total amount of electricity drawn by the various points of sale. This affects one

Change in the ratio of the present in the mains grid voltage and mains frequency.

In order to enable a stable and safe power supply with as constant, predetermined mains voltage and mains frequency as possible, the

Network operators so far the amount of electricity fed into the power grid depending on the amount of electricity taken. It is also known that the network operator can perform a connection or disconnection of consumer devices of the subscriber at the collection point.

However, this requires access by the network operator to

Consumables at the point of consumption, which is associated with an increased vulnerability to unauthorized access, especially by third parties. Furthermore, this accessibility means an additional regulatory burden for the

Network operators in addition to the already elaborate regulation of fluctuating

Power generation, especially with a high proportion of regenerative

Generation or due to changing or changing political and economic conditions.

The object of the present invention is now to enable a stable and secure power supply through the power grid and a predetermined grid frequency and grid voltage in the power grid. Furthermore, to relieve the network operator in providing a stable power supply can be created. Furthermore, it is the object of the present invention, an independent To effect control of the intake amount of electrical energy from the power grid at the take-off point and the need for a control for the

Network operators should be as unnecessary as possible. Furthermore, a faster control of the intake of consumables at the take-off is to be effected. Another task is to adjust the amount of electricity drawn to the injected amount of electricity.

At least one of these objects is achieved by a measuring unit having the features of claim 1. Accordingly, a measuring unit at a

Proposed acceptance point of an electric grid power-providing power network, the take-off point is associated with at least one of these network energy receiving and processable consumption device and the

Measuring unit performs the measurement of the mains voltage and / or the mains frequency and based on this measurement determines at least one measured value, wherein the

Recording quantity of power consumption of the power consumption device is variable depending on the measured value.

Furthermore, to solve at least one of the aforementioned objects, a control unit for controlling the intake amount by a power grid

Network power of a network power receiving and providing

proposed, wherein the control unit effects at least one output value, wherein the output value is dependent on at least one measured by measuring the mains voltage and / or the mains frequency measured value and the intake amount of the grid energy of the consumption device is variable depending on the output value.

The output value may be a control variable and / or an electrical voltage delivered to the consumption device and converted based on the network energy. The output value may cause the consumable device to automatically change the absorption of grid energy. Also, the consumption device via the control unit can be electrically connected to the grid energy, wherein the

Output value forms the electrical voltage that operates the consumption device. The consumption device can be electrically connected to the power supply network exclusively via the control unit.

Furthermore, to solve at least one of the aforementioned objects, a method for controlling the intake amount by a power grid proposed network energy of this network energy receiving and processable consumer device, wherein a measuring unit and a control unit is provided, wherein the measuring unit performs the measurement of the mains voltage and / or the mains frequency and based on this measurement at least one measured value, the control unit receives the measured value and dependent thereon causes at least one output value, wherein the recording amount of network power of the consumption device is changed depending on the output value.

Each of the aforementioned inventive solutions can provide a stable and secure power supply through the power grid and a given,

constant mains frequency, for example 50 Hz and a constant

Mains voltage, for example, 230 V in the power grid allow. Furthermore, the network operator is relieved in his task to provide a stable power supply, and causes independent control of the intake amount of electrical energy from the power grid at the pickup point. The control can take place under exclusion of an access possibility by the network operator. An externally, in particular by the network operator, taking place controlling the

Intake can be dispensable. Furthermore, a faster control of the intake of consumables at the take-off point can be done.

Existing peak load reserves to compensate for secondary fluctuations in power, for example by switching on or off powerful

Consumables can be reduced.

Particularly in the case of a power grid with a high proportion of electrical energy coming from regenerative production, which may be subject to considerable fluctuations, for example due to changing weather conditions, an improved and simple adaptation of the withdrawn amount of electricity to the fed-in quantity of electricity can be made possible.

The pick-up point may be a building or land or a home or power system of the subscriber, or a location within the building or on the property or an outlet associated with the property or building.

The consumption device may be an electrically operable device, for example an electronic device, in particular a computer, a light source, for example an LED light source, a cooling system, an air conditioner or a heating system or an electric vehicle while charging. The consumption device can

battery assisted or battery powered. The consumption device may, for example, additionally be electrically connected to an uninterruptible power supply system (UPS system).

The control unit can be designed as an electrical or electronic switch.

The change in the intake amount may be a reduction and / or

Shutdown and / or increase and / or connection of the intake amount.

The change in the intake amount of network energy may be a change in the electrical power consumption of the consumption device. Also, the

Change the intake amount of grid power to turn on or off the consumption device.

The change in the intake quantity of network energy can be a change in the cooling capacity or heating power in a consumption device designed as a cooling or heating system, for example via predefinable switching stages. In a computer running as a consumer, the change in the

Consumption of network power done via a change in the clock frequency. In a consumable device designed as a light source, the change in the intake quantity of network energy can correspond to a change in the light output.

In a particularly advantageous embodiment of the invention, the measuring unit and / or control unit is arranged centrally at the pickup point or directly associated with at least one consumer device.

The control and change of the intake takes place at the delivery point and self-sufficient. An externally, in particular by the network operator, taking place control of the intake is unnecessary.

In a further preferred embodiment of the invention takes the

Intake quantity as soon as the measured value exceeds a threshold value and / or decreases as soon as the measured value falls below a threshold value.

It is particularly advantageous if the change takes place continuously or in predetermined sections.

In a further advantageous embodiment of the invention, the

Consumption device additionally from the mains independent electrical energy record and process, where in each case the proportion of the intake

Mains power and independent electrical energy is variable depending on the measured value. The device providing the independent electrical energy may be a UPS system, a photovoltaic system and / or a wind turbine.

In a further particularly preferred embodiment of the invention, a UPS system is effectively connected to the collection point, whose share of

contributed electrical energy is variable depending on the measured value. Depending on the measured value, the UPS system may be placed in a supply state in which it provides electrical energy or in a state of charge in which it derives electrical energy from the mains.

In a further advantageous embodiment of the invention, the

Consumables on a battery, depending on the measured value of a

Change of the recording and / or output amount of electrical energy of the battery takes place.

Particularly preferably, the intake amount is changed by a maximum of 10 percent.

Further advantages and advantageous embodiments of the invention will become apparent from the description of the figures and the figures.

figure description

The invention will be described in detail below with reference to the drawings. They show in detail:

Figure 1: An arrangement of a measuring unit and a control unit in each case in a specific embodiment of the invention.

Figure 2: A flowchart of a method for controlling the

Consumption of network energy according to a specific embodiment of the invention.

FIG. 1 shows the arrangement of a measuring unit 16 and a control unit 28, each in a specific embodiment of the invention. The grid network 10, which is supplied with grid energy by a grid operator 19, has a number of drop off points 12, for example buildings, plots of land, house connections, power stations 15, Locations within the building or on the property or property or building associated sockets.

The electrical grid energy of the power grid 10 can, for example, by regenerative energy, for example by solar energy

Solar system 17 or by wind energy generated. The electrical grid energy can also be generated by conventional power generation, for example by fossil energy sources. The electrical grid energy in the power grid 10 in this case has a predetermined grid voltage and grid frequency. For example, the mains voltage is 230 V and the mains frequency is 50 Hz.

At the take-off point, at least one consumption device 14, which can receive and process the electrical network energy provided by the power network 10, is present. The consumption device 14 takes a certain

Consumption of electrical grid energy, the amount of intake depends, inter alia, on how powerful the consumption device 14 is.

The consumption device 14 may be an electrically operable device, for example an electronic device, in particular a computer 20, a light source, for example an LED light source, a cooling system, an air conditioner or a heating system 22 or an electric vehicle 18 during the charging process. The

Consumable 14 may be battery powered or battery powered. It is also conceivable that the consumption device 14 is additionally electrically connected to a UPS system. The consumption device 14 can be independent of the power grid, additionally receive and process electrical energy, for example, by the UPS system or a photovoltaic system or a wind turbine generated electrical energy.

At the delivery point 12, a measuring unit 16 is further arranged, which is able to perform a measurement of the mains voltage and the mains frequency of the power grid 10. Based on this measurement, a measured value is determined, wherein the intake amount of network energy of the consumption device 14 is variable depending on this measured value. The change in the intake quantity of network energy by the consumption device 14 thus takes place on the basis of the measured value independently, in particular without taking place from the outside by the network operator 19

Control and influence on the intake quantity. The measuring unit 16 has, in particular, an electronic circuit and a microcontroller, which carries out and processes the measurement and evaluation. The measuring unit 16 has connection contacts 24, which connect to the

Enable power grid 10. Furthermore, the measuring unit 16 comprises a

Output interface 26, via which, for example, the measured value can be output.

The output can be forwarded to a control unit 28 arranged at the take-off point 12 or at the consumption device 14 which effects a control of the amount of electrical power input to the consumption device 14. Depending on the measurement value provided by the measuring unit 16, the control unit 28 provides an output value, the intake quantity of the

Mains power of the utility device 14 is variable depending on the output value. The control unit 28 can be designed as an electrical or electronic switch. The control unit 28 comprises in particular a

Input interface 30, which is provided for recording the measured value. Furthermore, the control unit 28 has a connection contact 32 for connection to the consumption device 14, via which the change in the intake quantity is influenced.

The change in the intake amount of network energy of the consumption device 14, for example, a change in the electrical power of

Consumption 14 be. Also, the change in the amount of intake of network power may be turning on or off the power tool 14, or decreasing and / or increasing the amount of intake.

If the consumption device 14 is designed, for example, as a cooling or heating system 22, the change in the intake quantity of network energy,

for example, via specifiable switching stages, a change in the cooling capacity or heating power. In a consumer device 14 embodied as a computer 20, the change in the intake quantity of network energy may be a change in the clock frequency of the computer 20. For a bulb as

Consumption device 14 may correspond to the change in a change in the light output. The measuring unit 16 and / or control unit 28 can be mounted centrally on the delivery point 12. Also, the measuring unit 16 and / or control unit 28 may be assigned to the consumption device 14 directly.

Depending on the measured value, the intake quantity may increase as soon as the measured value exceeds a predetermined threshold value. The intake quantity may decrease as soon as the measured value reaches a predetermined threshold value

below. Particularly preferably, the intake quantity changes by at most 10 percent. However, a larger or smaller change in the amount of intake may also be provided.

FIG. 2 is a flowchart of a method for controlling the

Recording amount of network energy according to a specific embodiment of the invention shown. The power grid 10 provides electrical grid power 100 at the pickup location. The grid frequency and grid voltage of the grid electrical power is measured 102 by a measuring unit 16, which is one for this purpose

Measured value determines 104 and this in turn outputs 106. The output of the

Measured value 106 is sent to a control unit 28, which receives this measured value 108 and processes 110. Depending on the measured value, the control unit 28 effects an output value 112 which results in a change in the intake quantity 114 to electrical mains energy of the consumption device 14. For example, the output value may be a control variable and / or an electric power delivered to the utility device 14 based on the grid energy

Be supply voltage.

Claims

claims

1. Measuring unit (16) at a take-off point (12) of an electrical grid energy-providing power network (10), wherein the take-off point (12) at least one of this network energy receiving and processable consuming device (14) is assigned and the measuring unit (16) the measurement of the mains voltage and / or the network frequency makes and determines at least one measured value based on this measurement, wherein the intake amount of network energy of the consumption device (14) is variable depending on the measured value.

Second control unit (28) for controlling the intake amount of by a power network (10) provided network energy of this network energy receiving and processable consuming device (14), wherein the control unit (28) causes at least one output value, wherein the output value depending on at least one by measurement the mains voltage and / or the mains frequency determined measured value and the intake quantity of the network energy of the consumption device (14) is variable depending on the output value.

3. A method for controlling the intake amount of by a power grid (10) provided electrical network energy of this network energy receiving and processable consuming device (14), wherein a measuring unit (16) and a

Control unit (28) is provided, wherein the measuring unit (16) performs the measurement of the mains voltage and / or the mains frequency (102) and based on this measurement at least one measured value determined (104), the control unit (28) receives the measured value (108) and thereof depending at least one output value causes (112), wherein the intake amount of network power of the consumption device depending on the output value changed (114).

4. Measuring unit, control unit or method according to one of the preceding claims, characterized in that the measuring unit (16) and / or

Control unit (28) arranged centrally at the delivery point (12) or directly associated with the consumption device (14).

5. Measuring unit, control unit or method according to one of the preceding

Claims, characterized in that the change in the intake amount is a reduction and / or shutdown and / or increase and / or connection of the intake amount.

6. Measuring unit, control unit or method according to one of the preceding

Claims, characterized in that the intake quantity increases as soon as the measured value exceeds a threshold value and / or the intake quantity decreases as soon as the measured value falls below a threshold value.

7. Measuring unit, control unit or method according to one of the preceding

Claims, characterized in that the change takes place continuously or in predetermined sections.

8. Measuring unit, control unit or method according to one of the preceding

Claims, characterized in that the consumption device (14) independent of the power grid (10) can receive and process additional electrical energy, wherein in each case the proportion of the intake amount of network energy and

independent electrical energy is variable depending on the measured value.

9. Measuring unit, control unit or method according to one of the preceding

Claims, characterized in that at the delivery point (12) a UPS system is operatively connected, the proportion of contributed electrical energy is variable depending on the measured value.

10. Measuring unit, control unit or method according to one of the preceding claims, characterized in that the consumption device (14) has a battery and depending on the measured value, a change in the recording and / or output amount of electrical energy of the battery.