DE202017002176U1 - Electrical operating device for detecting transient interference pulses in a power supply network - Google Patents

Abstract

Electric operating device for detecting transient interference pulses in a power supply network, comprising:
a voltage converter (110) configured to output an output voltage to an electrical load (140) based on an input voltage obtained from the power supply network (200);
- At least one inductor (111);
- At least one controller (120) which is designed such that it measures at least one characteristic value of the at least one inductance and detects a transient interference pulse based on the at least one characteristic value.

Description

TECHNICAL AREA

Various examples of the present invention relate to an electrical operating device, and more particularly to an electrical operating device for detecting transient noise pulses in a power supply network.

BACKGROUND

The use of electrical operating devices for operating electrical loads requires a high standard with regard to the electrical immunity of the electrical operating devices. Electrical operating devices are increasingly constructed more compact and are therefore often prone to failure against undefined supply voltages such as surges, high-frequency glitches, harmonics and network perturbations.

Especially non-linear equipment, such as switching power supplies, uninterruptible power supply (UPS) systems, frequency converters, electronic control gear (ECG) but increasingly also inverters of photovoltaic systems, worsen the internal power grids of buildings, as well as connected public power grids.

In particular transient glitches lead to failures in the electronics. These are transient, oscillatory, or non-oscillatory surges that are typically highly attenuated and lasting for a few milliseconds or less. Transient glitches, for example, can be caused by lightning or switching, such as triggering fuses. The rise time of transient glitches varies from less than one microsecond to several milliseconds.

There is often a distinction between high-energy transient glitches (surge glitches) and low-energy transient glitches (burst glitches). These transient glitches are typically unpredictable in time, of limited duration only, and do not repeat themselves periodically. Burst glitches can arise, for example, by starting a poorly suppressed electric motor in the mains voltage, the burst glitches typically occur for 1-2 minutes. Other consumers, such as LED (English light emitting diode, LED) ballasts, which contain microcontroller, are disturbed by this. In the case of a burst or surge pulse, an LED ballast or the LED driver usually shuts down, but typically with a different fault, so that it is not immediately apparent whether a transient glitch has caused the shutdown. In doing so, the microcontroller is reset and the currently used operating parameters for the operation of the LEDs, such as brightness or dimming level, are lost.

SUMMARY

Therefore, in the operation of electrical equipment there is a need for electrical operating devices, which can detect transient glitches in a power grid quickly and reliably. Further, there exists a need for an improved method and network for easily and efficiently identifying and locating the origin of transient glitches, such as a jamming device that causes transient glitches in a power grid, or a lightning strike.

This object is achieved with the features of the independent claims. In the dependent claims further embodiments of the invention are described.

According to a first aspect of the invention, an electrical operating device is designed to detect transient interference pulses in a power supply network. The electrical operating device comprises a voltage converter, which is designed to output an output voltage to an electrical load based on an input voltage obtained from a power supply network. Furthermore, the electrical operating device comprises at least one inductor, and additionally at least one controller, which is designed such that it measures at least one characteristic value of the at least one inductance, and detects a transient interfering pulse in the power supply grid based on the at least one characteristic value.

The electrical operating device according to the present invention detects transient glitches in a power grid quickly and reliably. In addition, the operating device can be restarted or continue to operate after a fault has been detected by a transient glitch in a power grid, and there is no fault of the electrical load or other cause of fault, towards which the electrical machine must be shut down. As a result, the electrical control gear is more robust against interference in the power grid and can be operated efficiently and cost-effectively with few downtime. By integrating the functionality for detecting transient interference pulses in the operating device, a particularly compact integration can take place.

The voltage converter may comprise the at least one inductance, whereby the operating device can be constructed more compact. In particular, the inductance can be used both to convert the input voltage to the output voltage; as well as to detect the transient glitch.

A power factor compensation circuit may include the at least one inductor. As a result, an existing in the power factor correction circuit inductance can be used, whereby the number of electronic components is reduced and the operating device can be built more compact and cost-saving.

The at least one characteristic may comprise a voltage across the at least one inductor, and the controller may be configured to detect a transient glitch when the voltage across the at least one inductor falls below a predetermined threshold. A measurement of a voltage across the inductor is simple and fast to perform, allowing a simple and fast detection of a transient glitch.

The at least one inductance may comprise a first inductance and a second inductance, wherein the second inductance is different from the first inductance. By measuring at two different inductances a statement about the time course and the strength of a transient glitch can be made, whereby more accurate information about the transient glitch can be obtained and the transient glitch can be detected more reliably.

The controller may be configured such that it detects a transient glitch based on the characteristic value of the first inductance and the characteristic value of the second inductance and assigns it to a category.

By detecting a transient glitch based on two characteristics, namely the characteristic of the first inductor and the characteristic of the second inductor, and assigning the transient glitch to a category, it is possible to perform predetermined countermeasures associated with the associated category can. As a result, the counter dimensions can be adjusted to the type of transient interference pulse.

The category may be selected from a group comprising a surge glitch and a burst glitch, which can reliably and quickly distinguish these two important categories of transient glitches.

The voltage converter may be an AC-DC voltage converter, which outputs a DC voltage to a plurality of LED bulbs. By integrating the inductance in an electrical operating device, which includes an AC-DC voltage converter for the operation of a variety of LED bulbs, a transient glitch can be detected within an LED light.

The controller may further comprise a microcontroller and a memory, wherein the microcontroller is configured to store operating parameters for outputting the output voltage in the memory when a transient glitch has been detected, and to reset the operating parameters after a restart or reset of the read electrical equipment from the memory.

By storing operating parameters for operating an electrical load, the operating parameters are prevented from being lost by resetting or restarting the microcontroller. After resetting, the operating parameters can be read out again by the microcontroller, so that the electrical load can be operated with the same operating parameters as before the transient interference pulse. This increases the reliability against transient interference pulses.

The electrical operating device may further comprise a network interface configured to transmit glitch information about the detected transient glitch and time information about the detected transient glitch indicating when the transient glitch has occurred.

The transmission of a glitch information and a time information on the detected transient glitch allows an assignment of the transient glitch to other events within the power grid. For example, it can be determined in this way that a transient interference pulse correlates with the switching on of another consumer in the power supply network and, based thereon, be assigned to the switching on of the further consumer.

According to another aspect of the invention, there is provided a network for detecting and locating transient glitches. The network includes a plurality of electrical operating devices that are configured to detect a transient glitch. Next includes the Network an evaluation logic, which is designed such that it is communicatively connected to the plurality of electrical control gear. The evaluation logic is further configured to receive glitch information and timing information from the electrical equipment, and to localize the origin of the transient glitch based on the glitch information and the time information.

The network according to the present invention enables consumers causing transient glitches in a power grid to be reliably and quickly detected and located. As a result, the disturbances within the network can be reduced and the network has a higher quality of the power supply, which can also be operated against glitches sensitive consumers with little downtime in the power grid. Thus, areas and devices that cause transient glitches can be found directly. As a result, a high availability, safety and robustness of the electrical system and the electrical equipment is achieved, and high cost-causing failures can be avoided.

The evaluation logic may be configured to perform the localization based on a time difference indicated by the time information. The localization based on a time difference indexed by time information enables an accurate local determination of the origin of the transient glitch, for example a causing interfering consumer or the location of a lightning strike. In addition, jamming devices that cause a burst or surge glitch can be identified by triangulation.

The evaluation logic may be configured to perform the localization based on a predefined topology of the power supply network and the plurality of electrical operating devices. The localization based on a predefined topology of the power grid allows for faster localization with little overhead over localization without topology information, thereby achieving an efficient improvement in the quality of the power grid.

The evaluation logic can be designed to receive operating information from at least one of the plurality of electrical operating devices and / or from at least one further electrical operating device.

Receiving at least one operating information from at least one of the plurality of electrical operating devices and / or at least one further electrical operating device within a power supply network allows a correlation of a transient interference pulse with the at least one operating information and thus an efficient and rapid improvement in the quality of the power supply network.

The evaluation logic may be configured to perform the localization based on the operational information, whereby the localization of the origin of the transient glitch can be performed more precisely and more quickly by assigning the transient glitch to an electrical appliance based on the operational information.

The operating information may be indicative of a change of an electrical operating mode of the respective electrical operating device, whereby an electrical operating mode of a respective electrical operating device can be detected as the cause of the transient glitch. As a result, the quality of the power supply network can be improved even faster by limiting the cause of the fault within the disturbing electrical operating device.

The electrical operating devices of the plurality of electrical operating devices may be formed in accordance with an electrical operating device according to one of claims 1 to 10.

Through the network comprising electrical operating devices according to claims 2 to 10, technical effects can be achieved which are comparable with the technical effects described above for the electrical operating devices according to the first aspect. If, for example, also roller blinds, elevators, air conditioning systems, as proposed in the course of the Internet of Things, are addressed via the network, transient interference pulses can be simply and efficiently assigned to one of these electrical operating devices.

The features and features set out above, which are described below, can be used not only in the corresponding combinations explicitly set out, but also in other combinations or isolated, without departing from the scope of the present invention.

list of figures

Hereinafter, the present invention will be explained in more detail with reference to preferred embodiments with reference to the figures.

• 1 zeigt eine schematische Darstellung eines elektrischen Betriebsgerätes zum Erkennen von transienten Störimpulsen gemäß einem Ausführungsbeispiel.
• 2 zeigt eine schematische Darstellung eines elektrischen Betriebsgerätes zum Erkennen von transienten Störimpulsen gemäß einem weiteren Ausführungsbeispiel.
• 3 zeigt eine schematische Darstellung eines Netzwerkes zum Erkennen und Lokalisieren eines Ursprungs von transienten Störimpulsen gemäß einem Ausführungsbeispiel.
• 4 zeigt ein Flußdiagramm eines Verfahrens zum Erkennen von transienten Störimpulsen.

In the figures, like reference characters designate the same or similar elements. The figures are schematic representations of various embodiments of the invention. Elements shown in the figures are not necessarily drawn to scale. Rather, the various elements shown in the figures are reproduced in such a way that their function and general purpose will be understood by those skilled in the art.

• 1 shows a schematic representation of an electrical operating device for detecting transient noise pulses according to an embodiment.
• 2 shows a schematic representation of an electrical operating device for detecting transient noise pulses according to another embodiment.
• 3 shows a schematic representation of a network for detecting and locating an origin of transient glitches according to an embodiment.
• 4 shows a flowchart of a method for detecting transient glitches.

DETAILED DESCRIPTION OF EMBODIMENTS

The above-described characteristics, features, and advantages of this invention, as well as the manner in which they will be achieved, will become clearer and more clearly understood in connection with the following description of the embodiments, which will be described in detail in conjunction with the drawings.

The present invention relates to an electrical operating device 100 which is an electrical load 140 in a power supply network 200 operates. The electrical operating device 100 includes at least one inductance 111 , and a controller 120 , which is formed, at least one characteristic value of the inductance 111 u measure and based on a transient glitches 202 in the power supply network 200 to recognize. The present invention further includes a network 300 comprising a plurality of electrical operating devices according to the invention 100 wherein the network 300 is configured to generate transient glitches 202 within a power supply network 200 to locate.

Conventional burst or surge detectors are stand-alone devices that can be installed in electrical equipment and detect the occurrence of surge or burst noise in a power grid. Such detectors are not intended for permanent installation in a power grid and also do not have a network interface, such as has an LED ballast, such as DALI or Ethernet. Furthermore, in conventional methods for locating a causer, bursts of individual consumers or groups are separated from the network in order to identify an interference-causing consumer by an exclusion method.

These conventional techniques are complex and complex. The techniques described below make it possible to easily detect transient glitches, to take countermeasures and, if necessary, to localize the transient glitches.

1 shows a schematic representation of an electrical operating device 100 for detecting transient glitches 202 according to an embodiment.

The electrical operating device 100 includes a voltage converter 110 , a controller 120 , and an inductance 111 , The operating device 100 For example, it may be configured as an electronic ballast (ECG) for operating, for example, a gas discharge lamp, a fluorescent lamp or a multiplicity of LED lamps. Furthermore, this is the electrical operating device 100 through two network connections 205 with a power supply network 200 connected. The voltage converter 110 is designed as an AC-DC voltage converter and gives to operate an electrical load 140 a DC electrical voltage, which is different from the voltage of the power supply network 200 is, and a direct electrical current to the electrical load 140 from. The inductance 111 is between the two power outlets 205 arranged. The control 120 is designed such that it has a characteristic value of the inductance 111 measures. The characteristic value can be a voltage via the inductance 111 include, where the control 120 is designed such that it has a transient interference pulse 202 detects when the voltage across the at least one inductance 111 falls below a predetermined threshold. In other embodiments, the controller may 120 be arranged and configured such that it has a magnetic field or a current through the inductance 111 measures. Based on the characteristic of the inductor 111, the controller determines 120 , whether a transient glitch 202 within the power supply network 200 is present.

In one embodiment, the inductance comprises 111 a first inductance and a second inductance, wherein the second inductance is different from the first inductance. A first characteristic value of the first inductance and a second characteristic value of the second inductance are determined, and both characteristic values are used to detect and determine a transient interference pulse 202 used. The control 120 In one exemplary embodiment, it is designed in such a way that, based on the two characteristic values of the first inductance and the second inductance, it forms a transient interference pulse 202 recognizes and assigns it to a category. The category can be a Surge glitch or a Burst glitch.

2 shows a schematic representation of an electrical operating device 100 for detecting transient glitches 202 according to a further embodiment.

The electrical operating device 100 includes a voltage converter 110 , a controller 120 and a network interface 130 , The electrical operating device 100 is still over two network connections 205 with a power supply network 200 connected. The voltage converter 110 is adapted to a DC electrical voltage, which is different from the electrical voltage of the power supply network 200 is, and a direct electrical current to an electrical load 140 leave.

The voltage converter 110 In this embodiment, the inductance 111, which is between the power connections, comprises 205 is arranged. The voltage converter 110 further includes a rectifier 112 , which is an AC voltage of the power supply network 200 rectified, a power factor compensation (PFC) circuit 113, and a DC / DC voltage converter 114 , which, like in 1 , an output voltage to the electrical load 140 provides.

The power factor compensation circuit 113 provides an output voltage for downstream components of the control gear 100 ready. A power factor compensation circuit 113 is used to eliminate or at least reduce harmonic currents in an input current. Harmonic currents can occur, in particular in the case of non-linear consumers, such as, for example, rectifiers with subsequent smoothing in power supplies, since in such consumers the input current is shifted in its phase and distorted in a non-sinusoidal manner despite the sinusoidal input voltage. The occurring higher-frequency harmonics can by an upstream of each device active or clocked power factor compensation circuit 113 be counteracted. Power factor compensation circuits 113 are also used in control gear 100 for lighting, for example, in electronic ballasts for LED bulbs.

Another voltage conversion and / or dimming functions, for example via the DC / DC voltage converter 114 , which can be configured as LLC resonant converter can be achieved. The control 120 controls the operation of the electrical operating device 100 and all its components, and can thereby fulfill various control or regulation functions, for example the implementation of dimming commands.

The control 120 continues to be so with the inductance 111 connected, that they have a characteristic of the inductance 111 measures. In this embodiment, the characteristic value comprises the inductance 111 a voltage across the inductance 111 ; In other embodiments, the characteristic may also describe a current or a magnetic field as described above.

The control 120 further includes a microcontroller 121 and a memory 122 , The microcontroller carries out the calculation and control functions of the controller 120 by. The microcontroller 121 is also with the memory 122 connected so communicatively that he operating parameters of the operation of the electrical load 140 in the store 122 can save and read. The microcontroller 121 is additionally communicative with the network interface 130 connected to a glitch information and a time information about a detected transient glitch 202 over the network interface 130 a network 300 provide. The time information indicates in one embodiment when the transient glitch 202 occured. The network interface 130 allows communication with a network 300 , and may include one or more network interfaces to communicate with other systems or components.

In one embodiment, the microcontroller ( 121 ) is configured to store operating parameters 171 for outputting the output voltage in the memory 122 when a transient glitch occurs 202 was detected, and that he the operating parameters 171 after a restart of the electrical control gear 100 from the store 122 reads.

In some embodiments, it would also be possible for the inductance 111 Part of the power factor compensation circuit 113 is. The inductance 111 could also be part of the DC / DC voltage converter.

3 shows a schematic representation of a network 300 for detecting and locating transient glitches 202 according to an embodiment.

A power supply network 200 includes a plurality of electrical operating devices 100, which are electrically connected to each other. The electrical operating devices 100 are designed in such a way as to produce a transient interference pulse 202 to recognize. A network 300 comprises the electrical operating devices 101 and an evaluation logic 210, which are communicatively connected to one another. An electrical operating device 201 of the plurality of electrical operating devices 100 causes a transient glitch 202 , The transient glitch 202 spreads along the electrical connections to the nearest electrical control gear 100 from being increasingly muffled and being from the electrical equipment 100 recognized. The electrical operating devices 100 , which the transient glitch 202 detect, communicate glitch information and a time information of the transient glitch 202 to the evaluation logic 210 based on the evaluation logic 210, an identification and a location of the Störbetriebsgerätes 201 performs. In this case, the evaluation logic 210 localization based on a triangulation or topology of the power network 200 Localization. Also advantageous is a calculation of the geometric origin of the transient interference pulse 202 due to a transit time difference of the electrical interference pulse 202 from the disturbance device 201 to the other electrical operating devices 100 ,

In one embodiment, the evaluation logic 210 formed to from at least one of the plurality of electrical control gear 100 and / or at least one further electrical operating device 100 to receive operating information. The evaluation logic 210 is further configured to perform the localization based on the operational information. In some examples, the operating information is indicative of a change in an electrical operating mode of the respective electrical operating device 100 ,

A method for detecting transient glitches in a power grid is disclosed.

4 shows a flowchart of the method for detecting and locating transient noise pulses 202 ,

The procedure begins in step S10 , In step S20 is powered by an electrical operating device 100 an input voltage of the power supply network 200 receive. In step S30 is through the electrical control gear 100 an output voltage or current based on the input voltage to an electrical load 140 output. In step S40 is at least one characteristic of at least one inductance 111 of the electrical operating device 100 measured. In step S50 becomes a transient glitch 202 in the power grid 200 based on the at least one characteristic value of the at least one inductance 111 recognized. The procedure ends in step S60 ,

The disclosed method allows transient glitches in a power grid to be reliably and quickly detected, and other sources of error, such as an electrical load fault, to which the ECM must be turned off. Further, based on the method described above, an electrical operating device may be restarted or continue to operate after a fault has been detected by a transient glitch in a power grid. As a result, the electrical operating devices can be operated efficiently and cost-effectively with few downtimes.

The method for detecting transient glitches 202 in a power supply network 200 can through one of the electrical operating equipment 100 as described above.

By procedures performed by one of the electrical control gear 100 As described above, technical effects can be achieved that are comparable to the technical effects caused by the electrical operating devices described above 100 can be achieved.

In summary, an electric operating device 100 for detecting transient glitches 202 within a power network 200 provided, which at least one inductance 111 and which is designed such that at least one characteristic value of the at least one inductance 111 is measured and is detected based on the at least one characteristic that a transient glitch 202 in the power network 200 is available. Next will be a network 300 to detect and locate a transient glitch 202 within a power network 200 provided.

According to the invention by an operating device 100 a transient glitch 202 in a power supply network 200 detected quickly and reliably, as well as the origin of a transient glitch 202 , For example, a Störbetriebsgerät 201 , which transient glitches 202 in a power supply network 200 caused, or a lightning strike, through a network 300 identified and localized in a simple and efficient way.

LIST OF REFERENCE NUMBERS

100

electrical operating device

110

DC converter

111

inductance

112

rectifier

113

Power factor compensation circuit

114

DC-DC voltage converter

120

control

121

microcontroller

122

Storage

130

Network Interface

140

electrical load

200

Power supply network

201

electrical fault operating device

202

transient interference pulse

205

power connections

210

evaluation logic

300

network

S10

begin

S20

Receiving an input voltage

S30

Outputting an output voltage

S40

Measuring a characteristic of the inductance

S50

Recognition of a transient interference pulse

S60

The End

Claims (17)

Electric operating device for detecting transient interference pulses in a power supply network, comprising: a voltage converter (110) configured to output an output voltage to an electrical load (140) based on an input voltage obtained from the power supply network (200); - At least one inductor (111); - At least one controller (120) which is designed such that it measures at least one characteristic value of the at least one inductance and detects a transient interference pulse based on the at least one characteristic value. Electric operating device after Claim 1 wherein the voltage converter (110) comprises the at least one inductor (111). Electric operating device after Claim 1 wherein a power factor compensation circuit (113) comprises the at least one inductor (111). Electrical operating device according to one of the preceding claims, wherein the at least one characteristic value comprises a voltage across the at least one inductance (111) and wherein the controller (120) is designed such that it detects a transient interference pulse (202) when the voltage across the at least one inductor (111) falls below a predetermined threshold. Electrical operating device according to one of the preceding claims, wherein the at least one inductance (111) comprises a first inductance and a second inductance, wherein the second inductance is different from the first inductance. Electric operating device after Claim 5 wherein the controller (120) is further configured to recognize and classify a transient glitch (202) based on the characteristics of the first inductor and the second inductor (202). Electric operating device after Claim 6 , where the category is selected from a group comprising a surge glitch and a burst glitch. Electrical operating device according to one of the preceding claims, wherein the voltage converter (110) is an AC-DC voltage converter which outputs a DC voltage to a plurality of LED lighting means (140). Electrical operating device according to one of the preceding claims, wherein the controller (120) further comprises a microcontroller (121) and a memory (122), wherein the microcontroller (121) is designed such that it operating parameters (171) for outputting the output voltage in the memory (122) stores when a transient glitch (202) has been detected, and that it reads the operating parameters (171) from the memory (122) after a restart of the electrical operating device (100). Electric operating device according to one of the preceding claims, further comprising: a network interface (130) adapted to transmit glitch information about the detected transient glitch (202) and time information indicative of when the transient glitch (202) has occurred. Network for detecting and locating transient glitches in a power grid, comprising: - a plurality of electrical operating devices (100), each configured to detect a transient glitch (202); - An evaluation logic (210), which is designed so that it is communicatively connected to the plurality of electrical operating devices (100) that it receives from the electrical operating devices (100) glitch information and time information, and that they based on the glitch -Information and the time information performs a localization of the origin of the transient glitch (202). Network after Claim 11 wherein the evaluation logic (210) is adapted to perform the localization based on a time difference indicated by the time information. Network after Claim 11 or 12 wherein the evaluation logic is configured to perform the localization based on a predefined topology of the power supply network (200) and the plurality of electrical operating devices (100). Network according to one of Claims 11 to 13 wherein the evaluation logic (210) is designed to receive operating information from at least one of the plurality of electrical operating devices (100) and / or from at least one further electrical operating device (100). Network after Claim 14 wherein the evaluation logic (210) is adapted to perform the localization based on the operational information. Network after Claim 14 or 15 , wherein the operating information is indicative of a change of an electrical operating mode of the respective electrical operating device (100). Network according to one of Claims 11 to 16 , wherein the electrical operating devices (100) of the plurality of electrical operating devices according to the electrical operating device according to one of Claims 1 to 10 are formed.

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