KR20030073077A - union type blocking filter having blocking filter and phase coupler - Google Patents

Abstract

PURPOSE: An integrated blocking filter by integrating a blocking filter with a phase coupler is provided to reduce the complexity of a communication system by integrating the phase coupler to the blocking filter. CONSTITUTION: An integrated blocking filter(100) is comprised of a blocking filter and a phase coupler, and is installed between a molded case circuit breaker and an earth leakage breaker. The blocking filter is comprised of a plurality of reactors(L1-L8) and a plurality of capacitors(C1-C7). The reactors(L1-L2) are connected to a power line(R), the reactors(L3-L4) are connected to a power line(S), the reactors(L5-L6) are connected to a power line(T), and the reactors(L7-L8) are connected to a common line(L). The capacitors(C1-C4) are respectively connected between a contact point(P1) and a ground line(Gr), between a contact point(P2) and the ground line(Gr), between a contact point(P3) and the ground line(Gr), and between a contact point(P4) and the ground line(Gr). The phase coupler is comprised of capacitors(C5-C7) connected between the power lines(R,T,S) and the common line(L).

Description

Union type blocking filter having blocking filter and phase coupler}

The present invention relates to an integrated blocking filter, and in particular, a blocking filter that blocks communication signal interference between a communication network and a communication network in a power line communication system, and a communication signal between phases in a three-phase power source within a consumer, thereby smoothly communicating. The present invention relates to an integrated blocking filter for integrating a phase coupler for reducing cost, installing and rationalizing construction by simplifying a power line communication system.

In general, power line communication refers to a technology capable of transmitting voice, text, and video data by enabling high-speed Internet and telephone connection using only a power line, and is also referred to as power line communication (PLC). Power line communication technology is a technology that can be used in various fields such as high-speed Internet communication, Internet telephony, home networking, etc., and it has the advantage of low installation cost and almost no communication fee because it can use the existing power line.

When the technology is commercialized, it is possible to remotely control electric lights, various electronic devices, and heating and cooling in the consumer using the Internet. Such power line communication may be widely used in the future because it does not need to install a LAN that has a high cost.

In the commercialization of such power line communication, it is essential to apply a blocking filter that blocks communication signal interference between the communication network and the communication network and a phase coupler for smooth communication between phases and phases in the power line in the consumer.

However, until now, as a need for a blocking filter or a phase coupler for connecting a communication signal between phases and phases, the development has been separately performed. Therefore, since the blocking filter and the phase coupler are separately developed and installed, the power line communication system is complicated, the cost is increased, and installation and construction are difficult.

The present invention has been invented to solve the above problems, power line communication by integrating a blocking filter to block the communication signal interference and a phase coupler for connecting the communication signal between the phase (Phase) and phase in the three-phase power source in the consumer The aim is to provide an integrated blocking filter aiming at cost reduction, installation and rationalization of the system.

1 is a circuit diagram of an integrated blocking filter according to the present invention.

2 is an example of installation of an integrated blocking filter according to the present invention.

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

100: integrated blocking filter 110: blotting filter

120: phase coupler 130: panel board

140: power line 150: earth leakage breaker

160: wiring breaker 170: meter

The present invention for achieving such an object,

A blocking filter having a configuration in which a ground line is connected between each reactance line of the three-phase power line and a common line of the common power line, and a ground line, respectively, in a consumer; And a phase coupler having a structure in which each phase power line of the three-phase power line and the phase and phase of the common power line are connected to each other with a capacitance of a specific capacity on one side of the blocking filter.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a circuit diagram of an integrated blocking filter according to the present invention, and FIG. 2 is an installation example of an integrated blocking filter according to the present invention.

As shown in FIG. 2, the integrated blocking filter 100 according to the present invention may be installed at the rear end of the circuit breaker 150 in the distribution panel 130, that is, between the circuit breaker 150 and the ground fault breaker 160. As shown in FIG. 1, the integrated blocking filter 100 has two reactances (L1-L2, L3-L4) for each of the three-phase (R, S, T) power lines and the common (N) power line. , L5-L6, L7-L8 are connected in series, and one side of capacitance C1-C4 of a specific capacity is connected to the contact point P1-P4 formed between each reactance L1-L8, and this capacitance The other side of (C1-C4) is a blocking filter 110 having a configuration connected to the ground line Gr and a common phase power line with each phase power line of a three-phase (R, S, T) power line on one side of the blocking filter 110. The phase coupler 120 having a structure in which a phase and a phase of the power line are connected by a capacitance C5-C7 of a specific capacity is integrally formed.

Here, the common (N) power line and the ground line (Gr) may be formed separately from the three-phase (R, S, T) power line, but will be described as being formed together in the present invention.

Therefore, the blocking filter 110 according to the present invention is the action of the capacitance (C1-C4) connecting the ground line and the reactance (L1-L8) and the reactance connected in series between the communication signal between the communication line to each power line It is used for the purpose of eliminating the communication interference between communication networks and eliminating the leakage of information and confusion afterwards. In other words, it blocks the communication signal with both sides based on the blocking filter and prevents the communication signal from crossing to other communication network section during power line communication.

In addition, the phase coupler 120 formed integrally with the blocking filter is applied to the three phase only, and serves to connect the communication signal to the next stage without distortion (attenuation) as opposed to the blocking filter 110. That is, when three-phase power is used in the consumer, two wires are supplied to the room or home appliance and each heater such as R-N, S-N, or T-N. If, in the room using the R-N line to control the home appliances or electric heaters in the room using the S-N line using power line communication, the control is not controlled because the phases are different from each other. That is, since the communication signals cannot be shared with other phases unless they are connected to each other, the phase coupler 120 serves to connect the communication signals to the other phases.

Since the phase coupler 120 is connected between phases, any phase can be connected so that they can be shared with each other. Therefore, the three-phase power supply may be connected like RS, ST, TN, and RT, SN, TN. You may connect.

In the present invention, the blocking filter 110 to block the communication signal interference between the power line communication network and the network and the phase coupler 120 for connecting the phase between phases in the three-phase power line communication to integrate the digital home appliances and advanced power business communication network It can be used as a communication network for high speed home networking, home automation, and remote automatic control.

In addition, it can be used as a communication network for advanced power projects for remote meter reading, direct load control, and customer service.

As described above, the integrated blocking filter according to the present invention integrates a blocking filter that blocks communication signal interference and a phase coupler that connects a phase-to-phase communication signal from a three-phase power source in a consumer to a power line communication system. Cost reduction and installation, rationalization of construction and strengthening of technological competitiveness.

Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited thereto and may be improved or modified by those skilled in the art within the scope of the technical idea of the present invention.

Claims (1)

Two reactances (L1-L2, L3-L4, L5-L6, and L7-L8) are connected in series to each phase power line and common (N) power line of the three-phase (R, S, T) power line in the customer. A blocking filter 110 having a configuration in which a gap between the ground and the ground Gr is connected with a capacitance C1-C4 having a specific capacity; And a phase having a structure in which each phase power line of a three-phase (R, S, T) power line and a phase and a phase of a common (N) power line are connected to each side of the blocking filter 110 by a capacitance C5-C7 of a specific capacity. Integrated blocking filter, characterized in that the coupler 120 is formed.