KR20020032024A - Apparatus For optimizing emergency power source in order to powerline Communication and method therefore - Google Patents

Abstract

PURPOSE: A device for optimizing an emergency power source for a high frequency power line and a method thereof are provided to reduce a noise being generated in a neutral line from an emergency power source being used with a general power source in common by a filter circuit and solve a damping of a high frequency signal for a communication caused by an emergency circuit breaker effectively for performing a high frequency power line communication stably using an emergency power source. CONSTITUTION: A three-phase power line of an emergency power source(12) is connected to an internal emergency generator. A neutral line of the emergency power source(12) is connected to a general power(10) in common. If a power failure happens, an internal emergency generator of the emergency power source(12) is operated after a predetermined time passed. According as an automatic switching switch(14) is switched from the general power(10) toward the emergency power source(12), an emergency power source from the emergency power source(12) is supplied to a specific plural electric power loads(LD1-LDn) as an elevator or a feed water pump through a plurality of fuses. According as the neutral line being applied from the emergency power source(12) is used with the general power(10) in common, a separation filter circuit(18) filters a high frequency noise component for breaking an introduction of a high frequency noise being generated from an electric power load through the neutral line.

Description

Apparatus For optimizing emergency power source in order to powerline Communication and method therefore}

The present invention relates to an apparatus and method for optimizing an emergency power source for high-frequency power line communication, and more particularly, when performing high-frequency power line communication using an emergency power source, the neutral line of the emergency power system using a general commercial power system Emergency noise for high frequency power line communication to reduce the noise generated by sharing the signal and the attenuation of the signal generated by the emergency light breaker, and to easily couple the communication signal for power line communication to the power line for emergency light. The present invention relates to a power supply optimization device and a method thereof.

In general, a high-rise building or apartment with an elevator is equipped with an emergency power source or an emergency generator in order to secure its own power in case of a power failure in case of emergency. It is installed on each floor separately from the power system installed inside the building.In case of emergency such as power failure, emergency power supply is limited to a small number of emergency power loads such as elevators or emergency lights installed on each floor. It is supposed to be.

That is, the power from the emergency power source or the emergency generator is not supplied when the commercial power source is normally used, but can be supplied only during a power outage, and the method of wiring to the required power load of each floor is one to one for each floor. Correspondingly, wiring and a single large-capacity power line such as single-phase or three-phase can be installed in common, and the distribution of small-capacity power lines in each layer is mainly used.

On the other hand, in the case of the neutral wire drawn out from the emergency power supply to the power load, such as an elevator or emergency light, it is usually connected with the neutral wire drawn from the general commercial power source.

On the other hand, in recent years, by forming a tossin network using a general and low-voltage commercial power supply, a power line communication method that can transmit and receive various communication information such as data, images, voice, text, etc. has been developed and put into practical use. Further, efforts are being made to apply the power line communication function to the emergency power source in order to enable near field communication or long distance communication even in an emergency situation in which a power failure of the commercial power source occurs.

However, in the case of an emergency power source currently applied to a high-rise building or a high-rise apartment, the neutral wire drawn from the emergency power source is used in common with a general commercial power source. Since noise may be induced through the neutral wire for frequent loads, it is important for normal data communication when noise generated from the load is mixed through the neutral wire when high frequency power line communication is performed using an emergency power supply. There is a problem of attenuating the signal-to-noise ratio (SNR) which is a factor.

In high-rise buildings and high-rise apartments equipped with emergency power supplies, emergency lights are provided on each floor, and emergency light breakers are provided to protect emergency lights from overcurrent caused by power sources. In the state of power line communication using electric power, a signal attenuation occurs for a high frequency signal for power line communication by a circuit for overcurrent detection according to the internal configuration of the circuit breaker for emergency light, and thus a high frequency communication signal for data communication. There is a problem that will interfere with the stable delivery of.

In addition, in order to perform power line communication through the emergency power source separately from the high frequency power line communication using the commercial power source, additional communication line laying work must be carried out to install the communication line under the power load supplying power from the emergency power source such as an emergency lamp. However, there is a difficulty in paying expensive construction costs.

Accordingly, the present invention has been made to solve the above problems, the object of which is to generate a high-frequency power line communication using the emergency power, noise generated from the neutral line from the emergency power source commonly used in common commercial power supply The present invention provides an apparatus for optimizing an emergency power source for high frequency power line communication to reduce the noise by a filter circuit and to effectively cancel attenuation of the high frequency signal for communication by an emergency light circuit breaker.

Another object of the present invention is to provide an apparatus for optimizing an emergency power source for high frequency power line communication to facilitate the coupling of power line communication signals using an emergency light electrical outlet without proceeding with a separate communication line excavation work. will be.

Still another object of the present invention is to provide a method of optimizing emergency power for high frequency power line communication to prevent attenuation of high frequency signals by an emergency light circuit breaker in addition to reducing noise generated by power load in a neutral line of emergency power. will be.

1 is a block diagram showing the configuration of an apparatus for optimizing emergency power for high frequency power line communication according to the present invention;

FIG. 2 is a diagram showing a detailed circuit configuration of the separation filter circuit shown in FIG. 1;

3A and 3B are graphs illustrating an exemplary conversion state of a channel response to an emergency light power source before and after installation of a separation filter circuit according to a preferred embodiment of the present invention;

4A is a view showing an example of a detailed circuit configuration of the high-frequency attenuation prevention circuit shown in FIG.

4B is a view showing another example of a detailed circuit configuration of the high-frequency attenuation prevention circuit shown in FIG. 1;

5a and 5b is a view showing the structure of the emergency light electric outlet shown in Figure 1,

FIG. 6 is a diagram illustrating a detailed circuit configuration of a high frequency coupling circuit embedded in the electric light outlet for emergency lighting shown in FIG. 1.

<Description of the symbols for the main parts of the drawings>

10: commercial power supply, 12: emergency power supply,

14: automatic switching switch (ATS), 18: separation filter circuit,

20: breaker for emergency light, 22: high frequency attenuation prevention circuit,

24: emergency light outlet, 26: emergency light,

28: high frequency coupling circuit, 30: communication terminal.

According to an embodiment of the present invention to achieve the above object, in the state using a common commercial power supply and a neutral wire in common, when the power failure is made, the emergency power to emergency power loads including emergency lights according to the switching of the automatic switching switch A power line communication apparatus using an emergency power source for supplying a power supply and a breaker for interrupting an overcurrent included in a power signal of the emergency power source, and using an emergency power source for performing high frequency power line communication using the emergency power source. As the neutral wire of the power source is used in common with a general commercial power source, high frequency noise removing means for removing high frequency noise induced through the neutral wire from the power load, and a high frequency communication signal for power line communication included in the emergency power signal. To prevent attenuation by the breaker The present invention provides an apparatus for optimizing emergency power for high frequency power line communication comprising high frequency attenuation preventing means for passing a high frequency communication signal.

According to another embodiment of the present invention to achieve the above object, when a power failure occurs, the power signal from the emergency power source using a common commercial power supply and a neutral wire in common power including the emergency light through a circuit breaker for blocking the over-current A power line communication method using an emergency power source for performing high frequency power line communication using an emergency power system configured to be supplied to a load, wherein the emergency power source uses a common commercial power source and a neutral wire in common, and thus a neutral wire may be removed from a predetermined power load. Removing the high frequency noise induced through the low frequency band filtering and preventing the high frequency communication signal for power line communication included in the emergency power signal from being attenuated by the overcurrent sensing operation of the circuit breaker. Pass the communication signal Step and, by sending a radio frequency communication signal and removing the protection of the high-frequency attenuation of the high frequency noise toward the predetermined communication network is provided with the emergency power optimization method for high frequency power line communication comprising the step of proceeding the power-line communication.

According to the present invention configured as described above, by installing a low-frequency band filter on the emergency power supply side to attenuate the noise generated by the power load from the neutral wire used in common with the commercial power supply side, and to block the overcurrent from the emergency light In order to prevent attenuation of the high frequency signal for communication caused by the emergency light circuit breaker installed in order to prevent attenuation, a high frequency attenuation prevention circuit composed of capacitors can be installed to more stably perform high frequency power line communication using an emergency power source. By providing a communication connector for connecting a communication line drawn from the communication network to the electrical outlet, the line laying for the high frequency power line communication of the emergency power source can be easily performed at low cost without any separate communication line laying work. Can come true .

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

That is, FIG. 1 is a block diagram showing a configuration of an apparatus for optimizing emergency power for high frequency power line communication according to the present invention.

As shown in FIG. 1, an apparatus for optimizing emergency power for high frequency power line communication according to the present invention includes a commercial power source 10, an automatic switching switch 14 (ATS), a plurality of fuses F1 to Fn, For a typical high-rise building or a high-rise apartment in which power loads LD1 to LDn are installed, an emergency power source 12, a separation filter circuit 18, an emergency light circuit breaker 20, a high frequency attenuation prevention circuit 22, and a high frequency couple The ring circuit 28 is composed of an electric light 24 for emergency lighting.

The emergency power source 12 has a three-phase power line connected to an internal emergency generator, and a neutral wire is commonly connected to the commercial power source. When a power failure occurs, the emergency power supply 12 operates an internal emergency generator after a predetermined time such as 30 seconds has elapsed, and the automatic switching switch 14 switches the emergency power supply 12 from the commercial power supply 10 side. By switching to the side), the emergency power from the emergency power supply 12 can be supplied to a specific plurality of power loads LD1 to LDn, such as an elevator or a water feed pump, through the plurality of fuses F1 to Fn.

In the figure, the separation filter circuit 18 is a neutral wire drawn from the emergency power supply 12 is used in common with the commercial power supply 10, for example, the high-frequency noise generated from a power load such as an elevator through the neutral wire In order to filter the high frequency noise components to block the inflow, a low frequency band filter is applied as a separation filter as shown in FIG. 2.

In Fig. 2, the separation filter circuit 18 is a three-phase power supply line, each of which is provided with a plurality of first to third output lines (i.e., first to third power supply lines) and neutral lines from the first to third input lines. Inductors are connected in series. That is, the first to third inductors L1 to L3 are connected in series to the first power supply line, the fourth to sixth inductors L4 to L6 are connected in series to the second power supply line, and the third to the third power supply line. The seventh to ninth inductors L7 to L9 are connected in series, and the tenth to twelfth inductors L10 to L12 are connected in series to the neutral line.

Further, a plurality of capacitors are respectively connected in parallel between the inductors connected to the respective power supply lines. In other words, the first capacitor C1 and the second capacitor C2 are connected in parallel between the first to third inductors L1 to L3 and the fourth to sixth inductors L4 to L6, respectively. The third capacitor C3 and the fourth capacitor C4 are connected in parallel between the sixth inductors L4 to L6 and the seventh to ninth inductors L7 to L9, and the seventh to ninth inductors L7 are respectively connected in parallel. The fifth capacitor C5 and the sixth capacitor C6 are connected in parallel between the tenth to twelfth inductors L10 to L12 from ˜L9.

Here, the separation filter circuit 18 passes a low frequency signal of 50 to 60 Hz corresponding to a power supply frequency, and performs a function of filtering high frequency noise components of several tens of KHz or more, and the separation filter circuit 18 is installed. Before the high frequency noise component of several tens of kHz to 2 MHz appears in the channel frequency response of the emergency light power supply as shown in FIG. 3A, while the separation filter circuit 18 is shown in FIG. As shown in the figure, high frequency noise signals in the band of several tens of KHz to 2 MHz or less are almost eliminated.

In the same figure, the high-frequency attenuation prevention circuit 22 prevents a high-frequency communication signal from attenuating power line communication in a process of detecting an overcurrent by a magnetic core installed inside the emergency light breaker 20. As an example, an example of a detailed circuit for preventing the high frequency attenuation is as shown in Fig. 4A.

As shown in Fig. 4A, the high frequency attenuation prevention circuit 22 has capacitors C7 and C8 connected in parallel between the input power line and the input neutral line of the emergency light circuit breaker 20, respectively, between the output power line and the output neutral line. Each of the capacitors C7 and C8 has a significantly low resistance to high frequency signals, while a high resistance to low frequency signals allows high frequency communication signals for power line communication to pass therethrough. The low-frequency power signal allows the emergency light breaker 20 to pass through.

On the other hand, another example of the high frequency attenuation prevention circuit 22 is as shown in Figure 4b. As shown in FIG. 4B, the high frequency attenuation prevention circuit 22 has capacitors C9 and C10 in parallel between the input power line and the input neutral line of the emergency light circuit breaker 20, respectively, between the output power line and the output neutral line. A ferrite core L13 is connected between the output power line and the output neutral line from each of the capacitors C9 and C10, and the ferrite core L13 passes through each of the capacitors C9 and C10. It is to provide electrical stability to the high frequency signal.

Here, when the emergency light breaker 20 is installed at the starting point of the power supply system of the emergency power supply 12, the high-frequency attenuation prevention circuit 22 is an emergency power supply 12 in which the emergency light breaker 20 is installed. It is preferable to install at the starting point of the power supply system.

In addition, the emergency light electrical outlet 24 lights the emergency light 26 by receiving a general power signal passing through the emergency light breaker 20 and the high frequency attenuation prevention circuit 22 and a high frequency communication signal for power line communication. In addition, a high frequency coupling circuit 28 for transmitting a power line communication signal to a communication network constructed in the premises of the building and for coupling the power line communication signal included in the emergency power signal is incorporated. .

As shown in FIGS. 5A and 5B, the emergency light electric outlet 24 receives a power line (that is, an emergency light input power line and a neutral wire) drawn out from the emergency light breaker 20 on the upper side thereof, and connects therein. A power line inlet 24a for forming a power line, and an emergency light receiver 24b for fixedly accommodating the emergency light 26 having a power terminal connected to a power line inserted therein at a lower side thereof. Meanwhile, a communication connector 24c for connecting the communication terminal 30 connected to the communication network is formed on the side of the outlet body.

Here, the communication connector 24c is formed in the form of a serial connection port or a connection jack connected to the high frequency coupling circuit 28 embedded in the electrical outlet 24, and is included in the emergency power signal. The signal is supplied to the communication network through the communication terminal 30.

In FIG. 6, the high frequency coupling circuit 28 is connected to an emergency light input power line and a neutral line, respectively, as shown in FIG. 6, and capacitors C11 and C12 for blocking an emergency power signal of 50 to 60 Hz. A two-wire transmission and reception terminal having a primary core connected to the capacitor C11 on the emergency light input power line side and a capacitor C12 on the emergency light neutral line side, respectively, the secondary core of which is connected to the communication connector 24c. A parallel connection between a ferrite core L14 for coupling a high frequency signal and a two-wire transmission / reception terminal (+) (−) from a secondary core of the ferrite core L14 connected to a positive (−) Consisting of resistors R1 and R2.

Next, the operation of the present invention made as described above will be described in detail with reference to the accompanying drawings.

First, in the case where a power failure occurs in a state where AC power from a general commercial power supply 10 is supplied to power loads LD1 to LDn such as an elevator or a water feed pump through a plurality of fuses F1 to Fn, After a predetermined time elapses after the power failure occurs, the emergency power generator 12 installed in the emergency power supply 12 is operated, and the automatic switching switch 14 is switched to the emergency power supply 12 side, and the power supply from the emergency power supply 12 is The signal is supplied to the plurality of power loads LD1 to LDn through the plurality of fuses F1 to Fn, respectively.

In this state, the separation filter circuit 18 composed of a low frequency band filter has a high frequency generated from a predetermined power load and transmitted through the neutral wire as the neutral wire of the emergency power supply 12 is used in common with the commercial power supply 10. The noise is filtered out.

Next, in the high frequency attenuation prevention circuit 22, in order to prevent the high frequency signal for power line communication from being blocked by the emergency light circuit breaker 20, a power signal of 50 to 60 Hz passes through the emergency light circuit breaker 20. Instead, a high frequency signal of several tens of KHz or more passes through the high frequency attenuation prevention circuit 22.

In addition, the emergency power signal passed through the emergency light breaker 20 and the high frequency signal passed through the high frequency attenuation prevention circuit 22 is applied to the emergency light electric outlet 24 to which the emergency light 26 is coupled. In the emergency light electrical outlet 24, the emergency light 26 is turned on by a power signal, while a high-frequency power line communication signal is coupled through a high frequency coupling circuit 28 and formed on the side of the outlet body for communication. 24c).

Therefore, when the communication terminal 30 which is connected to a predetermined communication network is coupled to the communication connector 24c of the electric lamp 24 for emergency lighting, it is coupled via the high frequency coupling circuit 28. The high frequency communication signal for power line communication can be transmitted to the communication network through the two-wire communication terminal 30.

The present invention having the above-described embodiments can be embodied in various modifications without departing from the gist of the present invention, without departing from the gist of the present invention. Although it is possible to prevent noise reduction and attenuation of high-frequency communication signals for the present invention, the embodiment of the present invention may be equally applied to other power loads using an emergency power supply, for example, an emergency power supply to an elevator or a water supply pump. Of course it is.

As described above, according to the present invention, in the case of performing a high frequency power line communication using an emergency power source installed in a high-rise building or a high-rise apartment, the neutral power of the emergency power source is shared with a general commercial power source, and the high frequency noise is generated. As a result, it is possible to prevent attenuation of the high frequency power line communication signal by the circuit breaker provided for the blocking of the overcurrent, thereby making it possible to achieve a more normal and stable high frequency power line communication.

In addition, in the present invention, a circuit for coupling a high frequency power line communication signal to an electrical outlet of an emergency light that is turned on by receiving an emergency power supply, and directly connecting a communication terminal connected to a predetermined communication network to the main portion of the electrical outlet. By allowing the communication connector to be formed, it is possible to construct a communication line for stable power line communication using an emergency power supply in a short time at low cost without proceeding with a separate communication line excavation work.

Claims (7)

In the state where common commercial power supply and neutral wire are used in common, emergency power supply which supplies emergency power to emergency power load including emergency light according to switching of automatic switching switch when power failure occurs, and overcurrent included in power signal of the emergency power supply In the power line communication device using an emergency power source for performing a high frequency power line communication using the emergency power source having a circuit breaker for blocking the, As the neutral wire of the emergency power source is used in common with the general commercial power source, high frequency noise removing means for removing the noise of the high frequency induced through the neutral wire from the power load, In order to prevent the high frequency communication signal for power line communication included in the emergency power signal from being attenuated by the circuit breaker, the high frequency attenuation prevention means for passing the high frequency communication signal is configured for emergency use for high frequency power line communication. Power optimization device. The apparatus for optimizing emergency power for high frequency power line communication according to claim 1, wherein the high frequency noise removing means comprises a low frequency band filter for passing only an emergency power signal of a low frequency band. The emergency power supply for high frequency power line communication according to claim 1, wherein the high frequency attenuation preventing means comprises a plurality of capacitors connected between an input power line of the circuit breaker and an output power line, and an input neutral line and an output neutral line, respectively. Optimization device. 2. The high frequency attenuation preventing means according to claim 1, wherein the high frequency attenuation preventing means comprises: a plurality of capacitors connected between an input power line of the circuit breaker and an output power line, an input neutral line and an output neutral line, respectively, an output power line and an output neutral line of the plurality of capacitors. An apparatus for optimizing emergency power for high frequency power line communication, characterized in that it comprises a ferrite core connected between. The circuit breaker according to claim 1, wherein a high-frequency coupling circuit for coupling a high-frequency communication signal from said high-frequency attenuation preventing means is built-in, and a communication connector for coupling a communication terminal connected to a predetermined communication network is formed in a main portion thereof. An apparatus for optimizing emergency power for high frequency power line communication, characterized in that it further comprises an emergency light electrical outlet for lighting the emergency light by the emergency power signal passing through. 6. The high frequency coupling circuit of claim 5, wherein the high frequency coupling circuit comprises a plurality of capacitors connected to an emergency light input power line and an emergency light neutral line, respectively, and a ferrite core for coupling connected between the transmission and reception terminals of the communication connector from the plurality of capacitors. An apparatus for optimizing emergency power for high frequency power line communication. When a power failure occurs, high-frequency power line communication is carried out using an emergency power system that supplies power signals from an emergency power source using a common commercial power supply and a neutral wire in common to a power load including an emergency light through a breaker for blocking over current. In the power line communication method using an emergency power source for Removing the high frequency noise induced through the neutral wire from the predetermined power load through low frequency filtering as the emergency power source uses a common commercial power supply and a neutral wire in common; Passing a high frequency communication signal separately from the breaker to prevent attenuation of the high frequency communication signal for power line communication included in the emergency power signal according to an overcurrent sensing operation of the breaker; And transmitting power to the predetermined communication network to remove the high frequency noise and attenuate the high frequency to perform a power line communication.