Abstract: A multi-pump control system with a control module, a processing module, communication interface, and a storage module. The system is configured to change a number n of running pumps, and receive a signal indicative of a power consumption P and information about a speed ? of one of the n running pumps before and after two different changes of the number n of running pumps. The system is configured to determine, before and after at least two different changes of the number n of running pumps, without a measurement of a differential pressure ?p and of a flow Q, two approximated pump characteristics Pn and ?{tilde over (p)}n, wherein each of the approximated pump characteristics Pn and ?{tilde over (p)}n is unambiguously defined by a pair of parameters (?1, ?2; ?3, ?4). The system is configured to store the pair of parameters (?1, ?2; ?3, ?4) for each of the determined approximated pump characteristics Pn and ?{tilde over (p)}n.

Abstract: A pump monitoring system associates a current operating state of a pump system including n?1 pumps with one or more of k?1 fault scenarios. The pump monitoring system includes an interface module for receiving at least one set of m?2 operational values from the pump system. The m operational values define a current operational point in an m-dimensional operating space. A processing module processes operational values received by the interface module and consults given or determined model parameters describing a non-faulty model pump characteristic in the m-dimensional operating space and determines a k-dimensional decision vector with k decision vector components indicative of a deviation between an actual differential volume in the m-dimensional operating space based on distances between the m operational values and the non-faulty model pump characteristic, and a modeled differential volume in the m-dimensional operating space for the respective fault scenario.

Abstract: A method for controlling operation of a fluid transport system by applying a self-learning control process. The method includes: receiving obtained values of input signals during operation of the system during a first period of time, which is controlled by a predetermined control process, automatically selecting a subset of the input signals based on the received obtained values of the input signals, receiving obtained values of at least the selected subset of input signals during a second period of time, which is controlled by applying the self-learning control process, which is configured to control operation based only on the selected subset of input signals, and wherein applying the self-learning control process includes updating the self-learning control process based on the received obtained values of the selected subset of the input signals and based on at least an approximation of a performance indicator function.

Abstract: A control system controls a fluid distribution system that includes consumer branches arranged in parallel. Each consumer branch includes a consumer element (31) consuming fluid and/or thermal energy, a regulating device (9) receiving a control value regulating a flow of fluid and/or thermal energy through the consumer branch, and a sensor (11) providing a measured value of the consumer branch. The control system includes a saturation calculation module (21) providing a saturation value, for each operational consumer branch, indicative of the saturation degree of the associated consumer branch, and a saturation compensation module (23) receiving the saturation values and altering a reference value. The altered reference value is based on an initial reference value and the saturation values from all consumer branches. The consumer branch regulating device, of each operational consumer branch, is controllable based on the altered reference value and the measured value of the associated consumer branch.

Abstract: An alarm management module (13) is for a wastewater pumping station that includes at least one pump (9a, 9b) arranged for pumping wastewater out of a wastewater pit (1). The alarm management module (13) is configured to process at least one level variable (h) indicative of a filling level of the wastewater pit (1) and at least one capacity variable (p %, P %, C %) indicative of a pumping capacity of the wastewater pumping station. The alarm management module (13) is configured to trigger an intervention alarm only if all of the following conditions are met: a) the at least one level variable (h) is at or above a predetermined alarm level threshold (hm), b) the at least one level variable (h) is increasing, and c) the at least one capacity variable (p %, P %, C %) is below a capacity threshold.

Abstract: A control system (15) controls a water supply from at least two separate input lines (3i-k) into a sector (1) of a water supply network. The control system (15) is configured to receive input flow information indicative of the water input flow (qi-k) through each of the input lines (3i-k). The control system (15) is configured to receive input pressure information indicative of the input pressure (pi) in at least one (3i) of the input lines (3i-k). The control system (15) is configured to receive pressure information indicative of at least one pressure value (pcri,m,n) determined by a pressure sensor (7m,n) within the sector (1). The control system (15) is configured to control the input pressure (pi) by controlling at least a pressure regulating system (13i) at an input line (3i) based on the input flow information from all input lines (3i-k) and based on the sector pressure information.

Abstract: A method of balancing a heating system with a flow system, including a supply flow line (60) and a return flow line (70), a heat source (55) and a pump (10) hydraulic lines (L1-Ln), some having a heating element (H1-Hn) with a balancing valve (V1-Vn). The method includes: carrying out one or more measurements by opening one hydraulic line only and determining a flow rate through the pump and a pressure difference across the pump, establishing a hydraulic model based on the determined flow rate and pressure difference from at least two measurements from step, and at least one additional measurement for at least two hydraulic lines, specifying a desired flow rate for each of the hydraulic lines, and adjusting one or more of the dedicated balancing valves in order to meet the desired flow rate for each of the hydraulic lines by using the hydraulic model.

Abstract: A model formation module (25) is provided for creating a model for controlling a pressure regulating system (7) of a water supply network (5), wherein the water supply network (5) is equipped with one or more pressure sensors of which at least one remote pressure sensor (17a,b) is arranged remotely from the pressure regulating system (7), the model formation module (25) being configured to communicate with the at least one remote pressure sensor (17a,b). The model formation module (25) is configured to create said model without a measured, determined or estimated flow value on the basis of at least one remote pressure value determined by the at least one remote pressure sensor (17a,b) and on the basis of at least one load-dependent variable of the pressure regulating system (7), said model representing at least one pressure control curve for controlling the pressure regulating system (7).

Abstract: A multi-pump control system with a control module, a processing module, communication interface, and a storage module. The system is configured to change a number n of running pumps, and receive a signal indicative of a power consumption P and information about a speed ? of one of the n running pumps before and after two different changes of the number n of running pumps. The system is configured to determine, before and after at least two different changes of the number n of running pumps, without a measurement of a differential pressure ?p and of a flow Q, two approximated pump characteristics Pn and ?{tilde over (p)}n, wherein each of the approximated pump characteristics Pn and ?{tilde over (p)}n is unambiguously defined by a pair of parameters (?1, ?2; ?3, ?4). The system is configured to store the pair of parameters (?1, ?2; ?3, ?4) for each of the determined approximated pump characteristics Pn and ?{tilde over (p)}n.

Abstract: A control method for a pump assembly (10, 12) in a pneumatic or hydraulic system controls a speed (n) of the pump assembly (10, 12) in dependence on at least one variable (Dp, p, T, xp) which is detected in the system. An error signal (e) is produced from the detected variable (Dp, p, T, xp) on the basis of a sectionwise monotonic function. On the basis of the error signal, the speed (n) of the pump assembly (10, 12) is controlled.

Abstract: An alarm management module (13) is for a wastewater pumping station that includes at least one pump (9a, 9b) arranged for pumping wastewater out of a wastewater pit (1). The alarm management module (13) is configured to process at least one level variable (h) indicative of a filling level of the wastewater pit (1) and at least one capacity variable (p %, P %, C %) indicative of a pumping capacity of the wastewater pumping station. The alarm management module (13) is configured to trigger an intervention alarm only if all of the following conditions are met: a) the at least one level variable (h) is at or above a predetermined alarm level threshold (hm), b) the at least one level variable (h) is increasing, and c) the at least one capacity variable (p %, P %, C %) is below a capacity threshold.

Abstract: A monitoring module (13) identifies an operating scenario in a wastewater pumping station, with at least one pump (9a, 9b) arranged for pumping wastewater out of a wastewater pit (1) into a pipe (11). The monitoring module (13) is configured to process at least one load-dependent pump variable indicative of how the at least one pump (9a, 9b) operates and at least one model-based pipe parameter indicative of how the wastewater flows through the pipe (11) and/or the at least one pump (9a, 9b). The monitoring module is configured to identify an operating scenario in the wastewater pumping station by selecting an operating scenario from a group of predefined operating scenarios dependent on at least one first criterion that is based on the at least one load-dependent pump variable and at least one second criterion that is based on the at least one model-based pipe parameter.

Abstract: The method serves for operating at least one pump assembly (1, 1a, 5) of a multitude of pump assemblies (1, 1a, 5) which each comprise a programmable electronic motor (4, 4a, 6) control for individual pumps or groups or pumps, and which are at least temporarily data-connected to a server (8) via a network, with which data, in particular parameters and/or operating data of the multitude of pump assemblies (1, 1a, 5) is transferred via the network to a server (8) and is stored there in a data base. The stored data is processed according to defined typically statistical computation rules, whereupon the at least one pump assembly is then adapted in its programming via the network, on the basis of the processed data.

Abstract: A control system controls a fluid distribution system that includes consumer branches arranged in parallel. Each consumer branch includes a consumer element (31) consuming fluid and/or thermal energy, a regulating device (9) receiving a control value regulating a flow of fluid and/or thermal energy through the consumer branch, and a sensor (11) providing a measured value of the consumer branch. The control system includes a saturation calculation module (21) providing a saturation value, for each operational consumer branch, indicative of the saturation degree of the associated consumer branch, and a saturation compensation module (23) receiving the saturation values and altering a reference value. The altered reference value is based on an initial reference value and the saturation values from all consumer branches. The consumer branch regulating device, of each operational consumer branch, is controllable based on the altered reference value and the measured value of the associated consumer branch.

Abstract: A control method for a heat transfer system, wherein the heat transfer system comprises a supply conduit (12), at least one load circuit (2) and a heat transfer device (6; 28) between the supply conduit and the at least one load circuit, wherein a supply flow (qS) in the supply conduit (12) is detected on the basis of a desired entry-side load temperature (Tref), of an actual entry-side load temperature (TL) which is detected in the load circuit (2) and of a load flow (qL) in the load circuit (2), as well to as a heat transfer system, in which such a control method is applied.

Abstract: A control system (15) controls a water supply from at least two separate input lines (3i-k) into a sector (1) of a water supply network. The control system (15) is configured to receive input flow information indicative of the water input flow (qi-k) through each of the input lines (3i-k). The control system (15) is configured to receive input pressure information indicative of the input pressure (pi) in at least one (3i) of the input lines (3i-k). The control system (15) is configured to receive pressure information indicative of at least one pressure value (pcri,m,n) determined by a pressure sensor (7m,n) within the sector (1). The control system (15) is configured to control the input pressure (pi) by controlling at least a pressure regulating system (13i) at an input line (3i) based on the input flow information from all input lines (3i-k) and based on the sector pressure information.

Abstract: A pump system has at least one fluid container (2) which comprises an inlet (4) and an outlet (6), at least one pump (8) arranged in the inlet (4) or the outlet (6), and a control device (16) which includes a flow evaluation device for determining a flow through the fluid container (2) of the pump system. The flow evaluation device is configured such that the flow evaluation device uses a system model for determining the flow. The system model includes at least two different sub-models, a sub-model which describes the inflow behavior of the fluid container (2) and a sub-model which describes the outflow behavior of the fluid container (2). A corresponding pump flow evaluation method is provided.

Abstract: A pump system for a water supply mains has at least one pump device, a pressure detecting sensor at the pressure side of the pump device, a flow detecting sensor of the pump device, several pressure sensor units (D) remote arranged remotely from the pump device in different part regions of the mains, and a pump control device. The control device includes a model formation module designed in each case to produce a model (A) representing pressure loss from the pressure sensor to the position of the respective pressure sensor unit (D), based on several pressure measured values of at least two pressure sensor units (D) for the at least two associated part regions. The control device is designed for regulation of the pump device based on produced models (A), as well as to a corresponding method for regulation of a pump device in a water supply mains.

Abstract: A method and a heat transfer system for limiting a supply flow (qS) in a heat transfer system which includes a supply conduit (10) with a supply flow (qS) and with a supply entry temperature (TS), and at least one load circuit (2) with a load pump (20) which provides a load flow (qL) with a load entry temperature (TL) and a load exit temperature (TR). The load entry temperature (TL) is set by way of changing the supply flow (qS), wherein the supply flow (qS) is limited to a maximal flow (qS, max), taking into account at least one temperature detected in the load circuit (2).

Abstract: A model formation module (25) is provided for creating a model for controlling a pressure regulating system (7) of a water supply network (5), wherein the water supply network (5) is equipped with one or more pressure sensors of which at least one remote pressure sensor (17a,b) is arranged remotely from the pressure regulating system (7), the model formation module (25) being configured to communicate with the at least one remote pressure sensor (17a,b). The model formation module (25) is configured to create said model without a measured, determined or estimated flow value on the basis of at least one remote pressure value determined by the at least one remote pressure sensor (17a,b) and on the basis of at least one load-dependent variable of the pressure regulating system (7), said model representing at least one pressure control curve for controlling the pressure regulating system (7).