Voltage type ring main unit intelligent control device

Abstract

The utility model provides an intelligent control device for a voltage-type ring main unit. The intelligent control device can remotely control the opening and closing operation of a high-voltage load switch in the ring main unit. Comprising a load switch control module which is connected with a load switch in a ring main unit and is used for realizing opening and closing control operation of the load switch; the communication control module is connected with a far-end server and the load switch control module and is used for receiving the opening and closing signals of the far-end server in a communication manner and controlling the opening and closing control operation of the load switch control module on the load switch according to the opening and closing signals; and the current holding module is connected with the load switch control module and is used for providing holding current so as to protect the load switch.

Description

TECHNICAL FIELD

[0001] The utility model relates to ring main unit control technical field, specifically is a voltage type ring main unit intelligent control device. BACKGROUND

[0002] Ring main unit refers to a kind of high-voltage switchgear used in ring network distribution system, as important equipment in ring network distribution system, ring main unit not only can be distributed according to different load demand, ensure the stability and reliability of power supply in system;It can also provide overload protection, short-circuit protection and leakage protection and other functions.

[0003] The high-voltage switch of ring main unit is generally high-voltage load switch with high-voltage fuse, and ring main unit is a closed ring formed by power supply trunk, and power supply power supply is supplied to this ring trunk, and then it is distributed to the outside through high-voltage load switch from the trunk, and with the development of distribution network primary and secondary fusion technology, high-voltage ring main unit is also required to meet the intelligent requirements, that is, the intelligent unit of primary equipment contains part of secondary equipment, to realize measurement, metering, relay protection, monitoring, control and other functions, which not only can make the interface of primary equipment and secondary equipment match, compatible with equipment of different manufacturers, but also can expand new functions;But the original controller device in the 10kV voltage type ring main unit does not have communication function with DTU (generally installed in conventional switching station (station), outdoor small switching station, ring main unit, small substation, box-type substation, etc., used for collecting and calculating position signal, voltage, current, active power, reactive power, power factor, electric energy and other data of switching device, and operating switching on and off, realizing fault identification, isolation of feeder switch and recovery power supply of non-fault interval), so it cannot realize remote on-off operation of high-voltage load switch. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model provides a voltage type ring main unit intelligent control device, which can realize remote control of on-off operation of high-voltage load switch in ring main unit.

[0005] The utility model adopts the following technical scheme, a voltage type ring main unit intelligent control device, comprising:

[0006] Load switch control module is connected with load switch in ring main unit, and is used for realizing on-off control operation of load switch;

[0007] Communication control module is connected with remote server and load switch control module, and is used for receiving on-off signal of remote server, and controlling on-off control operation of load switch control module to load switch according to on-off signal;

[0008] A current maintaining module is connected with the load switch control module, and is configured to provide a maintaining current to protect the load switch.

[0009] Further, the load switch control module comprises a capacitor C1, a capacitor C2, resistors R1-R4, a contactor, a travel switch XK1, a travel switch XK2, a rectifier bridge VC1, a rectifier bridge VC2, a magnetic latching relay, a closing relay, and a plug-in interface CZ1. The magnetic latching relay and the closing relay are connected with the load switch. The communication control module comprises a controller, which is connected with the plug-in interface CZ1 and a remote server. One end of the capacitor C1 is connected with one end of the resistor R1, one end of the travel switch XK2, one end of a contact KM-2 of the contactor, and a pin 1 of the rectifier bridge VC2, and is connected to the plug-in interface CZ1. A pin 2 of the rectifier bridge VC2 is connected with one end of the resistors R2, R3 and R4. The other end of the capacitor C1 is connected with one end of the capacitor C2, one end of a coil KM-1 of the contactor, and a pin 4 of the rectifier bridge VC1, and is connected to the plug-in interface CZ1. The other end of the resistor R1 is connected with the other end of the capacitor C2. The other end of the travel switch XK2 is connected with the other end of the coil KM-1 of the contactor through the travel switch XK1. The other end of the contact KM-2 of the contactor is connected with a pin 3 of the rectifier bridge VC1. One end of a holding coil BQ of the magnetic latching relay is connected with the other ends of the resistors R2, R3 and R4. A pin 2 of the rectifier bridge VC1 is connected with the other end of the holding coil BQ and one end of an electromagnetic coil HQ of the closing relay. A pin 1 of the rectifier bridge VC1 is connected with the other end of the electromagnetic coil HQ.

[0010] Further, the current maintaining module comprises a plug-in interface CZ2, rectifier bridges VC3-VC5, current transformers CT1-CT3, resistors R5-R7, and a plug-in interface MZ1; the 1st and 2nd pins of the rectifier bridge VC1 are respectively connected to the plug-in interface CZ2, the 3rd pin of the rectifier bridge VC3 is connected to one end of the resistor R5, and then connected to one end of the current transformer CT1 through the plug-in interface MZ1, the 4th pin of the rectifier bridge VC3 is connected to the other end of the resistor R5, and then connected to the other end of the current transformer CT1 through the plug-in interface MZ1; the 3rd pin of the rectifier bridge VC4 is connected to one end of the resistor R6, and then connected to one end of the current transformer CT2 through the plug-in interface MZ1, the 4th pin of the rectifier bridge VC4 is connected to the other end of the resistor R6, and then connected to the other end of the current transformer CT2 through the plug-in interface MZ1; the 3rd pin of the rectifier bridge VC5 is connected to one end of the resistor R7, and then connected to one end of the current transformer CT3 through the plug-in interface MZ1, the 4th pin of the rectifier bridge VC5 is connected to the other end of the resistor R7, and then connected to the other end of the current transformer CT3 through the plug-in interface MZ1; the 1st pins of the rectifier bridges VC3, VC4 and VC5 are connected, and then connected to the plug-in interface CZ2, and the 2nd pins of the rectifier bridges VC3, VC4 and VC5 are connected, and then connected to the plug-in interface CZ2.

[0011] The utility model discloses the beneficial effect is, it can realize remote communication connection through communication control module, then according to the received opening and closing signal control load switch control module to the opening and closing control operation of load switch, thereby realize remote control high voltage distribution operation, in addition, through the current maintaining module that sets up, can realize the protection to load switch, avoid load switch damage, improve distribution safety, have good economic use value. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structural diagram of the utility model;

[0013] Figure 2 It is the circuit schematic diagram of the utility model. CONCRETE IMPLEMENTATION

[0014] As Figure 1 , Figure 2 The utility model discloses a voltage type looped net cabinet intelligent control device, including:

[0015] Load switch control module is connected with load switch in looped net cabinet, is used for realizing the opening and closing control operation of load switch;

[0016] The communication control module is connected with the remote server and the load switch control module, and is used for receiving the opening and closing signal of the remote server and controlling the opening and closing operation of the load switch control module on the load switch according to the opening and closing signal.

[0017] The current maintaining module is connected with the load switch control module, and is used for providing a maintaining current to protect the load switch.

[0018] The load switch control module comprises a capacitor C1, a capacitor C2, resistors R1-R4, a contactor, a travel switch XK1, a travel switch XK2, a rectifier bridge VC1, a rectifier bridge VC2, a magnetic latching relay, a closing relay and a plug-in interface CZ1. The magnetic latching relay and the closing relay are connected with the load switch, that is, the contact switches of the magnetic latching relay and the closing relay are connected with the load switch correspondingly to be driven to drive the load switch to open, close and maintain in the closed position through the corresponding coils. The communication control module comprises a controller, which is connected with the plug-in interface CZ1 and the remote server. The controller can be a current controller such as PLC, single-chip microcomputer, etc. One end of the capacitor C1 is connected with one end of the resistor R1, one end of the travel switch XK2, one end of the contact KM-2 of the contactor and the pin 1 of the rectifier bridge VC2, and is connected with the plug-in interface CZ1. The pin 2 of the rectifier bridge VC2 is connected with the resistors R2, R3 and R4. The other end of the capacitor C1 is connected with one end of the capacitor C2, one end of the coil KM-1 of the contactor and the pin 4 of the rectifier bridge VC1, and is connected with the plug-in interface CZ1. The other end of the resistor R1 is connected with the other end of the capacitor C2. The other end of the travel switch XK2 is connected with the other end of the coil KM-1 of the contactor through the travel switch XK1. The other end of the contact KM-2 of the contactor is connected with the pin 3 of the rectifier bridge VC1. One end of the holding coil BQ of the magnetic latching relay is connected with the resistors R2, R3 and R4. The pin 2 of the rectifier bridge VC1 is connected with the other end of the holding coil BQ and one end of the electromagnetic coil HQ of the closing relay. The pin 1 of the rectifier bridge VC1 is connected with the other end of the electromagnetic coil HQ.

[0019] The current holding module comprises a navigation plug interface CZ2, rectifier bridges VC3-VC5, current transformers CT1-CT3, resistors R5-R7, and a navigation plug interface MZ1; the 1st and 2nd pins of the rectifier bridge VC1 are respectively connected to the navigation plug interface CZ2; the 3rd pin of the rectifier bridge VC3 is connected to one end of the resistor R5, and then connected to one end of the current transformer CT1 through the navigation plug interface MZ1; the 4th pin of the rectifier bridge VC3 is connected to the other end of the resistor R5, and then connected to the other end of the current transformer CT1 through the navigation plug interface MZ1; the 3rd pin of the rectifier bridge VC4 is connected to one end of the resistor R6, and then connected to one end of the current transformer CT2 through the navigation plug interface MZ1; the 4th pin of the rectifier bridge VC4 is connected to the other end of the resistor R6, and then connected to the other end of the current transformer CT2 through the navigation plug interface MZ1; the 3rd pin of the rectifier bridge VC5 is connected to one end of the resistor R7, and then connected to one end of the current transformer CT3 through the navigation plug interface MZ1; the 4th pin of the rectifier bridge VC5 is connected to the other end of the resistor R7, and then connected to the other end of the current transformer CT3 through the navigation plug interface MZ1; the 1st pins of the rectifier bridges VC3, VC4 and VC5 are connected, and then connected to the navigation plug interface CZ2; and the 2nd pins of the rectifier bridges VC3, VC4 and VC5 are connected, and then connected to the navigation plug interface CZ2.

[0020] The working principle of the utility model is that when the controller receives the closing instruction sent by the remote server, the controller controls the coil KM-1 of the contactor to attract, the electromagnetic coil HQ of the closing relay is powered to attract, the contact switch of the closing relay drives the load switch to close, after closing, the holding coil BQ of the magnetic holding relay is powered to attract, the contact switch of the magnetic holding relay acts, and the load switch is maintained in the closed state; when the controller receives the opening instruction sent by the remote server, the magnetic holding relay is released, the holding coil BQ loses power, the contact switch of the magnetic holding relay acts, and the load switch opens.

[0021] It is apparent to those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or essential characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0022] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A voltage type ring main unit intelligent control device, characterized in that: The utility model relates to a kind of remote control type load switch control system, including: Load switch control module is connected with load switch in ring net cabinet, for realizing the switching control operation of load switch to load switch; Communication control module is connected with remote server and load switch control module, for communication receiving the switching signal of remote server, and according to switching signal control load switch control module to the switching control operation of load switch to load switch; Current retention module is connected with load switch control module, for providing maintaining current, realize the protection of load switch.

2. The intelligent control device for voltage type ring main unit according to claim 1, characterized in that: The load switch control module includes capacitor C1, capacitor C2, resistance R1~R4, contactor, travel switch XK1, travel switch XK2, rectifier bridge VC1, rectifier bridge VC2, magnetic latching relay, closing relay, plug interface CZ1;The magnetic latching relay, closing relay are connected with load switch;The communication control module includes controller, and the controller is connected with plug interface CZ1 and remote server;One end of capacitor C1 is connected with one end of resistance R1, one end of travel switch XK2, one end of contact KM-2 of contactor, 1 foot of rectifier bridge VC2 is connected after being connected with plug interface CZ1, 2 foot of rectifier bridge VC2 is connected with one end of resistance R2, resistance R3, resistance R4, the other end of capacitor C1 is connected with one end of capacitor C2, one end of coil KM-1 of contactor, 4 foot of rectifier bridge VC1 is connected after being connected with plug interface CZ1, the other end of resistance R1 is connected with the other end of capacitor C2, the other end of travel switch XK2 is connected with the other end of coil KM-1 of contactor after being connected with travel switch XK1, the other end of contact KM-2 of contactor is connected with 3 foot of rectifier bridge VC1, one end of holding coil BQ of magnetic latching relay is connected with the other end of resistance R2, resistance R3, resistance R4, 2 foot of rectifier bridge VC1 is connected with the other end of holding coil BQ, one end of electromagnetic coil HQ of closing relay, 1 foot of rectifier bridge VC1 is connected with the other end of electromagnetic coil HQ.

3. The intelligent control device for voltage type ring main unit according to claim 1, characterized in that: The current maintaining module comprises a navigation plug interface CZ2, rectifier bridges VC3-VC5, current transformers CT1-CT3, resistors R5-R7, and a navigation plug interface MZ1; the 1st and 2nd pins of the rectifier bridge VC1 are respectively connected to the navigation plug interface CZ2; the 3rd pin of the rectifier bridge VC3 is connected to one end of the resistor R5, and then connected to one end of the current transformer CT1 through the navigation plug interface MZ1; the 4th pin of the rectifier bridge VC3 is connected to the other end of the resistor R5, and then connected to the other end of the current transformer CT1 through the navigation plug interface MZ1; the 3rd pin of the rectifier bridge VC4 is connected to one end of the resistor R6, and then connected to one end of the current transformer CT2 through the navigation plug interface MZ1; the 4th pin of the rectifier bridge VC4 is connected to the other end of the resistor R6, and then connected to the other end of the current transformer CT2 through the navigation plug interface MZ1; the 3rd pin of the rectifier bridge VC5 is connected to one end of the resistor R7, and then connected to one end of the current transformer CT3 through the navigation plug interface MZ1; the 4th pin of the rectifier bridge VC5 is connected to the other end of the resistor R7, and then connected to the other end of the current transformer CT3 through the navigation plug interface MZ1; the 1st pins of the rectifier bridges VC3, VC4 and VC5 are connected to the navigation plug interface CZ2; and the 2nd pins of the rectifier bridges VC3, VC4 and VC5 are connected to the navigation plug interface CZ2.

Images