Method for pressure control in a supply network, device and supply network

• US 10,443,217 B2
• Filed: 01/15/2015
• Issued: 10/15/2019
• Est. Priority Date: 03/21/2014
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Allmaras, Moritz, Wehrstedt, Jan Christoph, Wever, Utz
• Primary Examiner(s): Dao, Tuan C
• Application Number:
  US15/117,317
• Publication Number:
  US 20170037604A1
• Time in Patent Office: 1,734 Days
• Field of Search: None
• CPC Class Codes: E03B 7/02 Public or like main pipe systems
• CPC Class Codes: G05B 17/02 electric
• CPC Class Codes: G05B 19/042 using digital processors G05B19/05 takes precedence
• CPC Class Codes: G06F 17/18 for evaluating statistical data , e.g. average values, frequency distributions, probability functions, regression analysis forecasting specially adapted for a specific administrative, business or logistic context G06Q10/04

Abstract

A supply network for supplying consumers with a medium is provided. Based on a reduction of data and a subsequent reconstruction of at least one pressure and/or flow value, the state at least at one further location in the supply network can be determined without having to be measured. An improved actuation of the at least one pump and/or of the at least one valve is thus possible. A device for pressure control in a supply network is also provided.

Claims

1. A method for pressure control in a supply network for supplying consumers with a medium, wherein the supply network has at least one pump for pumping the medium and/or at least one valve for controlling a medium flow, comprising the following steps:

a) determining at least one consumption profile for the respective consumer that consumes the medium transported in the supply network;

b) determining data describing pressure and/or flow profiles in the supply network on a basis of the consumption profiles;

c) reducing the data into a reduced data;

d) detecting at least one first pressure and/or flow value at at least one first point in the supply network, by a sensor interface signal-connected to at least one of;

at least one pressure sensor and at least one flow sensor, positioned within the supply network;

e) reconstructing at least one second pressure and/or flow value at at least one second point in the supply network from the reduced data by means of the at least one first pressure and/or flow value; and

f) actuating the at least one pump and/or the at least one valve on a basis of the at least one first pressure and/or flow value and the at least one second pressure and/or flow value.

2. The method as claimed in claim 1, wherein the data are reduced in step c) on a basis of a series expansion.

3. The method as claimed in claim 2, wherein the data are reduced on a basis of a proper orthogonal decomposition (POD) method.

4. The method as claimed in claim 1, wherein step e) comprises a reconstruction of the at least one second pressure and/or flow value using a gappy proper orthogonal decomposition (POD) method.

5. The method as claimed in claim 4, wherein second pressure or flow values are generated at different instants on a basis of the same series approach.

6. The method as claimed in claim 1, wherein step a) comprises the following steps:

determining an overall consumption of all consumers,

determining a share of the overall consumption for a respective consumer assigning a consumption value of zero for the respective consumer,

setting an amount of the medium which is less than the overall consumption, selecting a consumer, with the probability of a consumer being selected corresponding to a share of the consumer of the overall consumption, increasing the consumption value of the selected consumer by the amount, and

repeating the steps of selecting a consumer and increasing the consumption value for as long as a sum of the consumption values of all consumers is less than the overall consumption.

7. The method as claimed in claim 6, wherein step b) comprises a determination of the data describing the pressure and/or flow profiles while a respective consumer consumes the amount of the medium.

8. The method as claimed in claim 7, wherein the data describing pressure and/or flow profiles are calculated according to the Monte Carlo method.

9. The method as claimed in claim 1, wherein the at least one first pressure and/or flow value at the at least one first point in the supply network is registered by means of at least one first sensor, wherein the at least one first point is selected on the basis of a proper orthogonal decomposition (POD) method.

10. The method as claimed in claim 1, wherein a minimum pressure is established from the at least one first pressure value and the at least one second pressure value and, furthermore, the at least one pump and/or the at least one valve is/are actuated in a manner dependent on a difference between an intended pressure value and the established minimum pressure.

11. The method as claimed in claim 1, wherein the data in step b) describe pressure and/or flow profiles at nodes and/or in pipes of the supply network.

12. The method as claimed in claim 1, wherein the supply network is a water supply network.

13. A device for pressure control in a supply network for supplying consumers with a medium, wherein the supply network has at least one pump for pumping the medium and/or at least one valve for controlling a medium flow, comprising:

a determination unit for determining at least one consumption profile for a respective consumer that consumes the medium transported in the supply network;

a determination unit for determining data describing pressure and/or flow profiles in the supply network on a basis of the determined consumption profiles;

a reduction unit for reducing the data into a reduced data;

a detection unit for detecting at least one first pressure and/or flow value at at least one first point in the supply network, by a sensor interface signal-connected to at least one of;

at least one pressure sensor and at least one flow sensor, positioned within the supply network;

a reconstruction unit for reconstructing at least one second pressure and/or flow value at at least one second point in the supply network from the reduced data by means of the at least one first pressure and/or flow value; and

an actuation unit for actuating the at least one pump and/or the at least one valve on a basis of the at least one first pressure and/or flow value and the at least one second pressure and/or flow value.

14. A supply network for supplying consumers with a medium, comprising:

nodes and/or pipes, at least one pump for pumping the medium through the nodes and/or pipes and/or at least one valve for controlling a medium flow through the nodes and/or pipes, and at least one device as claimed in claim 13, which actuates the at least one pump and/or the at least one valve.