DE202009018676U1 - electricity meters - Google Patents

Abstract

Electricity meter, characterized in that it or a meter module (3) of the electricity meter (1) is designed at least for a number of load-variable tariffs which can optionally be assigned to an energy supply and / or an energy supply.

Description

The invention relates to an electricity meter according to the preamble of claim 1.

Electricity meters for detecting the energy supply from a supply network as well as for detecting the energy supply or feed into a supply network are known in different versions, in particular as electricity meters, which allow in particular in conjunction with additional devices a time-variable or load variable tariffing of the energy or energy supply, d. H. with time variables or load-variable tariffs.

The object of the invention is to provide an electricity meter, which allows both a count of the energy and a count of energy delivery with an extremely flexible design option of time-variable and / or load-variable tariffs.

To solve this problem, an electricity meter is designed according to claim 1.

Further developments, advantages and applications of the invention will become apparent from the following description of exemplary embodiments and from the figures. In this case, all described and / or illustrated features, in themselves or in any combination, in principle subject of the invention, regardless of their summary in the claims or their dependency. Also, the content of the claims is made an integral part of the description.

The invention will be explained in more detail below with reference to the figure, which shows in a block and / or functional diagram a communication-capable electricity meter according to the invention.

The in the figure generally with 1 designated electricity meter for detecting the energy reference from a generally in this figure 2 indicated supply network, preferably from a four-wire electrical supply network, and for detecting the energy supply or feed into the supply network 2 , In the illustrated embodiment, consists essentially of two components, namely the actual, in the figure with 3 designated counter module and from an additional module 4 ,

Energy supply therefore means that from the supply network 2 over the electricity meter 1 supplied to a connected consumption of electrical energy. Energy supply means the supply of electrical energy via the electricity meter 1 into the supply network 2 ,

The electricity meter 1 or its counter module 3 are designed so that the energy reference, but also the energy supply can be detected in each case taking into account several tariffs, which can be executed either as time-variable or load-variable tariffs and set in any way, number and / or combination.

The time-variable tariffs are used by one in the additional module 4 stored switching program with appropriate commands via a data connection between the counter module 3 and the add-on module 4 controlled. The circuit program is, for example, a downloadable program, which, for example, from a control center, not shown in the additional module 4 is read in and corresponds to the contractually agreed time-variable tariff or tariffs for energy supply and / or energy supply.

The load-variable tariffs are in the counter module 3 stored, in each case characterized by maximum or threshold values of the active power P _grw , with those in the manner described in more detail below, each of the measuring module 3 detected instantaneous active power P is compared.

• – Sechs zeitvariable Tarife für Energiebezug und drei zeitvariable für Energielieferung
• – Sechs zeitvariable Tarife für Energiebezug und drei lastvariable Tarife für Energielieferung
• – Sechs lastvariable Tarife für Energiebezug und drei lastvariable Tarife für Energielieferung
• – Sechs lastvariable Tarife für Energiebezug und drei zeitvariable Tarife für Energielieferung.

The following example illustrates the operation of the electricity meter 1 or of the measuring module 3 explained in more detail, it being assumed that the counter module 3 For energy supply and energy supply can be configured in each case with a total of nine different tariffs, which are then set time-variable and lastvariable, for example, as follows:

• - Six time-varying tariffs for energy purchase and three time-variable for energy supply
• - Six time-varying tariffs for energy purchase and three load-variable tariffs for energy supply
• - Six load-variable tariffs for energy purchase and three load-variable tariffs for energy supply
• - Six load-variable tariffs for energy purchases and three time-varying tariffs for energy supply.

The maximum instantaneous power of the energy supply or the energy supply is: P _max = 3 × U × I _max .

If I _{max is} assumed to be 60 A, for example, P _max = 3 × 230 × 60 = 41.40 kW or 40 kW rounded off

This maximum active power of 40 kW can be subdivided into a step sequence of 4 kW or a multiple thereof for the determination of the load-variable tariffs, wherein the ascending values of this step sequence represent the active power _limit P _grw responsible for the load-variable tariff.

Are the electricity meter 1 or its counter module 3 For example, for six time-variable tariff T1 _bez -TT-6 _bez for the energy supply and / or six time-variable tariff T1 _ran -T6 _ran for the energy supply and with three load-variable tariffs T7 _bez -T9 _bez for energy procurement and / or with three load-variable tariffs T7 _ran -T9 _{ran set} for the energy supply, so these load-variable rates, for example, the following limits are assigned: T7 _ref : 8 kW T7 _ran : 8 kW T8 _ref : 20 kW T8 _ran : 20 kW T9 _ref : 32 kW T9 _ran : 32 kW

The assignment of the active power _{limit values} P _grw for the load-variable tariffs is, for example, via the additional module 4 into the counter module 3 read in and stored there, so that each measured instantaneous or actual active power P in the counter module 3 compared with the stored there active power limits and the current energy value in a the relevant tariff T7 _{bez bez} -T9 or T7 _ran -T9 _was assigned tariff registers can be counted. In the aforementioned setting of the active power limits, the currently measured energy as a function of the actual active power P is therefore counted as follows: P ≤ 8 kW Energy is counted in the tariff register T7 _bez or T7 _ran 8 kW ≤ P ≤ 20 kW Energy is counted in the tariff register T8 _bez or T8 _ran 20 kW ≤ P ≤ 32 kW Energy is counted in the tariff register T9 _bez or T9 _ran.

It is understood that the above statements on the number and / or distribution of the tariffs as well as the respective active power limits defining the load-variable tariffs represent only examples, the number and / or distribution of the tariffs on time-variable and load-variable tariffs, the active power limits defining the individual load-variable tariffs etc. may also be chosen differently from the aforementioned example.

• – eine Messeinrichtung 6 zur Erfassung der physikalischen Werte Strom, Spannung und Phasenlage am Versorgungsnetz 2 und zur Bildung von entsprechenden vorzugsweise digitalen Messwerten, und zwar für jeden Leiter des Mehrleiterversorgungsnetzes,
• – eine zentrale Steuer- und Datenverarbeitungseinheit 7 insbesondere zur Verarbeitung der von der Messeinheit 6 gelieferten Messwerte sowie auch für die Steuerung unterschiedlichster Funktionen des Zählermoduls 3,
• – einen Daten- und Programmspeicher 8, in welchem u. a. die Wirkleistungsgrenzwerte P_grw für die lastvariablen Tarife, beispielsweise für die Tarife T7_bez–T9_bez und T7_lief–T9_lief abgelegt sind,
• – zwei Registeranordnungen 9.1 und 9.2, die mehrere Register 10, beispielsweise jeweils neun Einzelregister 10 aufweisen, von denen jeweils ein Register 10 nur einem Tarif zugeordnet ist, in das die diesem Tarif entsprechenden Energiebezüge oder -lieferungen eingezählt werden, und zwar die Energiebezüge in die Register 10 der Registeranordnung 9.1 und die Energielieferungen in die Register 10 der Registeranordnung 9.2;
• – eine Schnittstelle 12 für einen beispielsweise bidirektionalen Datenverkehr mit dem Zusatzmodul 4, und zwar u. a. für die Steuerung der zeitvariablen Tarife, für die Einstellung der lastvariablen Tarife, aber auch bevorzugt für ein Fernauslesen der Zählerdaten und des Zählerstandes über eine nicht dargestellte Datenübertragungsstrecke, beispielsweise an dem Rechner eines Versorgungsunternehmens oder einer Leitstelle;
• – eine Anzeige 13 zur Anzeige des Inhalts der Register 10 und/oder der Registeranordnungen 9.1 und 9.2.

For the aforementioned functions, the counter module 3 in the illustrated embodiment in an access protected, ie sealed and / or accessible only to authorized persons interior of a meter housing 5 including the following components:

• - a measuring device 6 for recording the physical values of current, voltage and phase position on the supply network 2 and for the formation of corresponding preferably digital measured values, for each conductor of the multi-conductor supply network,
• - a central control and data processing unit 7 especially for processing of the measuring unit 6 supplied measured values as well as for the control of various functions of the counter module 3 .
• - a data and program memory 8th in which inter alia the active power _{limit values} P _grw for the load-variable tariffs, for example for the tariffs T7 _bez -T9 _bez and T7 _ran -T9 _{ran are} stored,
• - two register arrangements 9.1 and 9.2 holding multiple registers 10 , for example, nine individual registers 10 each of which has a register 10 is assigned only to a tariff into which the energy purchases or deliveries corresponding to this tariff are counted, namely the energy purchases in the registers 10 the register arrangement 9.1 and the energy supplies in the registers 10 the register arrangement 9.2 ;
• - an interface 12 for example, bidirectional traffic with the add-on module 4 , among other things, for the control of time-variable tariffs, for setting the load-variable tariffs, but also preferably for a remote reading of the meter data and the meter reading via a data link, not shown, for example, on the computer of a utility company or a control center;
• - an ad 13 to display the contents of the registers 10 and / or the register arrangements 9.1 and 9.2 ,

The of the measuring unit 6 delivered readings are in the data processing and control unit 7 processed to the energy reference or the energy supply corresponding consumption values. At the same time, in the data processing and control unit 7 the current active power P in each case with the memory 8th stored active power _limits P _grw compared and the current energy value of the energy _reference or the energy _delivery in the current active power P corresponding and selected as tariff register TR register 10 read.

Before starting up the electricity meter to the load-variable tariffs T7 _{bez bez} -T9 and T7 _ran - T9 _was assigned to active power limits P _grw into memory 8th read in and also set which registers 10 are assigned to the individual load-variable tariffs.

As the electricity meter 1 Also suitable for such applications in which at times an energy reference from the supply network 2 , at times but also an energy supply in the supply network 2 are not just the measuring device 6 and the data processing and control device 7 designed so that the energy reference and the energy delivery clearly in the by the measuring unit 5 delivered measurements and / or by appropriate processing in the data processing and control unit 7 but it is in the illustrated embodiment, two register arrangements 9.1 and 9.2 provided, namely the register arrangement 9.1 for the energy reference and the register arrangement 9.2 for the energy supply.

Preferably, the counter module 3 in addition to the registers to be assigned to each tariff 10 in each register arrangement 9.1 and 9.2 at least one additional register 11 in which regardless of the tariffs of the total energy or the total energy delivery is read, so by comparing the sum of the energy purchases or the energy supplies, in the various registers 10 were read in with the tab 11 read total energy consumption or with the in the register 11 total energy delivery, the proper count by the electricity meter or the counter module 3 can be monitored, which is given (proper count) when the sum of the contents of the register 10 equal to the contents of the associated register 11 is.

The time-variable tariffs for energy supply and energy delivery are taken into account by using commands issued by the add-on module 4 stored switching program can be initiated and via the interface 12 to the data processing and control unit 7 this unit will receive the energy reference corresponding to the respective time-variable tariff or the tariff corresponding to the respective time-variable tariffs for energy delivery to the register associated with this time-variable tariff 10 the register arrangement 9.1 respectively. 9.2 forwards the count.

The electricity meter is preferred 1 designed so that it is completely free before its commissioning in relation to the choice of the number and / or distribution of tariffs on time-variable and lastvariable tariffs, on the setting of these tariffs characteristic variables, in particular times for the control of time variables tariffs and the active power _limits P _grw for the load-variable tariffs.

Furthermore, the electricity meter 1 so executed that he not only optional for an energy purchase from the supply network 2 and is designed for an energy supply to this supply network, but both the energy purchase, as well as the energy supply can be detected with one and the same electricity meter. The number of tariffs for the energy purchase and the energy supply is by appropriate choice of the number of registers 10 practically unlimited.

The electricity meter is preferred 1 also for a remote reading of the registers in the register arrangements 9.1 and 9.2 stored counts (energy and / or energy) trained.

The invention has been described above by means of exemplary embodiments. It is understood that numerous changes and modifications are possible without thereby departing from the inventive concept underlying the invention.

In particular, it is possible that the components of the counter module 3 , in particular those for processing by the measuring unit 6 supplied measured values, the storage of energy values, etc. are at least partially part of a microprocessor or other modular circuit and / or prescribed elements of the counter module 3 and / or their functions are realized by software.

LIST OF REFERENCE NUMBERS

1

electricity meters

2

electrical supply network

3

counter module

4

additional module

5

casing

6

measuring unit

7

Data processing and control unit

8th

Storage

9.1, 9.2

register arrangement

10, 11

register

12

interface

13

display

Claims (10)

Electricity meter, characterized in that it or a counter module ( 3 ) of the electricity meter ( 1 ) is formed at least for a plurality of load-variable tariffs, which can be assigned to an energy reference and / or an energy supply. Counter according to claim 1, characterized in that the electricity meter ( 1 ) or a counter module ( 3 ) several registers ( 10 . 11 ), which can be assigned either time-variable or load-variable tariffs for the energy purchase or the energy supply as a tariff register (TR). Electricity meter according to claim 2, characterized in that the registers ( 10 . 11 ) a register arrangement ( 9.1 ) for the energy purchase count and the registers ( 10 ) a further register arrangement ( 9.2 ) are provided for the count of the energy supply. Electricity meter according to claim 2 or 3, characterized in that the registers ( 10 . 11 ) of a common register arrangement for the count of the energy reference and for the counting of the energy supply are provided. Electricity meter according to one of the preceding claims, characterized in that the registers ( 10 . 11 ) of the at least one register arrangement ( 9.1 . 9.2 ) can be assigned freely selectable time variables and / or load-variable tariffs for energy supply and / or energy delivery. Electricity meter according to one of the preceding claims, characterized in that that of a measuring unit of the electricity meter ( 1 ) or the counter module ( 3 ) and corresponding to the energy reference or the energy supply with counter module ( 3 ) are compared there with active power _{limit values} (P _grw ) corresponding to the load-variable tariffs and the energy _reference or the energy _{delivery is} read into the register assigned to the respective load-variable tariff. Electricity meter according to one of the preceding claims, characterized in that the counter is also designed for time-variable tariffs for energy supply and energy supply. Electricity meter, characterized by an additional module in which a switching program, preferably a remotely loadable switching program for controlling the time-variable tariffs is stored. Electricity meter according to one of the preceding claims, characterized in that the load power _{limit values} (P _grw ) characterizing the load-variable tariffs are variable and / or in the electricity meter ( 1 ) or in the counter module ( 3 ) are readable. Electricity meter according to one of the preceding claims, characterized in that the active power _{limit values} (P _grw ) characterizing the load-variable tariffs are stored as a consequence with increasing power _value , for example as a sequence or series with constant or changing interval steps.

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