CN106128243A - Power failure simulator - Google Patents

Abstract

The invention provides power failure simulation equipment, which belongs to the field of power systems. It includes a grid operation fault simulator connected to the program-controlled power supply, and a simulated smart energy meter connected to the grid operation fault simulator, and a mutual induction component is set between the program-controlled power supply and the grid operation fault simulator; the program-controlled power supply, Power grid operation fault simulator, communication conversion control box connected with simulated smart energy meter; control host connected with communication conversion control box through wireless network. Obtain the command data sent by the control host to generate preset faults through the communication conversion control box, and send the command data to the program-controlled power supply/grid operation fault simulator/simulation smart energy meter that specifically presents the fault through wired cables, and can also Fault checking is performed on the three components of the subsidence fault, so as to improve the usability of the training device, and finally improve the skill level of the trainers who use the training device.

Description

Power failure simulation equipment

technical field

The invention relates to the field of power systems, in particular to power failure simulation equipment.

Background technique

With the rapid development of the national economy, in order to meet the growing demand for electric energy, the power system is also undergoing technological upgrading, and the construction of smart grids in the power system has become a trend of social progress.

In the process of building a smart grid, single-phase and three-phase smart energy meters have been widely used, but limited to the current technical level of electricians, the maintenance of the above-mentioned single-phase and three-phase smart energy meters is basically carried out by manufacturers.

In the process of realizing the present invention, the inventors have found that the related technologies have at least the following problems:

Since the consumption of single-phase and three-phase smart energy meters is increasing, if all of them are routinely maintained by manufacturers, it will seriously affect the promotion and utilization of single-phase and three-phase smart energy meters. However, the current power maintenance personnel cannot maintain the smart energy meter smoothly because they have not participated in the maintenance training for the smart energy meter.

Contents of the invention

In order to solve the problems of the prior art, the present invention provides a power failure simulation device for performing maintenance training on power maintenance personnel, and the power failure simulation device includes:

A power grid operation fault simulator connected to the program-controlled power supply, and a simulated smart energy meter connected to the power grid operation fault simulator, a mutual inductance component is arranged between the program-controlled power supply and the power grid operation fault simulator; A communication conversion control box connected with the program-controlled power supply, the power grid operation fault simulator, and the simulated smart energy meter; a control host connected with the communication conversion control box through a wireless network;

The power failure simulation equipment is placed in a waterproof casing, which is divided into an upper casing and a lower casing, the upper casing and the lower casing are hinged by a hinge, and the section where the upper casing and the lower casing contact There are double-layer sealing strips, and there are air-filled holes on the surface of the waterproof casing; there is a base for carrying the control host and power supply in the waterproof casing, as well as for receiving signal transceivers, relay controllers, and relay matrix circuits. groove.

Optionally, the mutual inductance element includes a voltage transformer and a current transformer.

Optionally, a communication conversion module is further arranged between the control host and the communication conversion control box.

Optionally, the wired cable uses an RS232 or RS485 interface.

Optionally, the control host sends the fault command to the communication conversion control box through the wireless network, and the communication conversion control box analyzes the fault information according to the fault command, and transmits the fault information through the Wired cables are sent to the programmable power supply, the power grid operation fault simulator, and the simulated smart energy meter;

The programmable power supply outputs different types of fault voltage signals and fault current signals according to the fault information;

The grid operation fault simulator receives the fault voltage signal and the fault current signal, and combines the fault information to generate different types of typical grid fault example signals;

The simulated smart ammeter receives the typical grid fault example signal, combines the fault information, and generates fault voltage data and fault current data.

Optionally, the control host obtains the fault voltage signal and the fault current signal through the communication conversion control box, and checks with the fault command;

The control host obtains the typical power grid fault example signal through the communication conversion control box, and checks with the fault command;

The control host obtains the fault voltage data and the fault current data through the communication conversion control box, and checks with the fault command.

The beneficial effects brought by the technical scheme provided by the invention are:

Obtain the command data sent by the control host to generate preset faults through the communication conversion control box, and send the command data to the program-controlled power supply/grid operation fault simulator/simulation smart energy meter that specifically presents the fault through wired cables, and can also Fault checking is performed on the three components of the subsidence fault, so as to improve the usability of the training device, and finally improve the skill level of the trainers who use the training device.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Ordinary technicians can also obtain other drawings based on these drawings on the premise of not paying creative work.

Fig. 1 is the structural representation of the power failure simulation equipment provided by the present invention;

Fig. 2 is a schematic diagram of the detailed structure of the power failure simulation device provided by the present invention.

detailed description

In order to make the structure and advantages of the present invention clearer, the structure of the present invention will be further described below in conjunction with the accompanying drawings.

Embodiment one

The present invention provides power failure simulation equipment, as shown in Figure 1, the power failure simulation equipment includes:

A power grid operation fault simulator connected to the program-controlled power supply, and a simulated smart energy meter connected to the power grid operation fault simulator, a mutual inductance component is arranged between the program-controlled power supply and the power grid operation fault simulator; The communication conversion control box connected with the program-controlled power supply, the power grid operation fault simulator, and the simulated smart energy meter; the control host connected with the communication conversion control box through a wireless network; the power failure simulation equipment placed In the waterproof case, the waterproof case is divided into an upper case and a lower case, and the upper case and the lower case are hinged by a hinge, and a double-layer sealing strip is provided on the contact section of the upper case and the lower case , there is an air-filled hole on the surface of the waterproof shell;

A base for carrying the control host and power supply, and a groove for accommodating signal transceivers, relay controllers, and relay matrix circuits are provided in the waterproof casing.

In the implementation, the program-controlled power supply is connected with the grid operation fault simulator to realize the power supply for the grid operation fault simulator, and the grid operation fault simulator is connected with the simulated smart energy meter. A mutual inductance component is also arranged between the program-controlled power supply and the grid operation fault simulator.

One end of the communication conversion control box communicates with the control host through the wireless network, and the other end is connected with the program-controlled power supply, the power grid operation fault simulator, and the simulated smart energy meter at the same time through a wired cable, so that according to the received power from the communication host Based on the command data that generates the fault, it controls the program-controlled power supply, the power grid operation fault simulator, and the simulated smart energy meter in a targeted manner, so that the three can generate faults corresponding to the command data, and realize that the training device can expand the smart grid. Simulation of failures that would occur.

In the drawings of this embodiment, in order to distinguish the two transmission forms of wired cables and wireless networks, solid lines are used to represent wired cables, and dashed lines are used to represent wireless networks, which are hereby explained.

In order to improve the adaptability of the fault simulation equipment to harsh conditions and facilitate the use of the power fault simulation equipment by power maintenance personnel in outdoor conditions, a waterproof casing is specially designed for the power fault simulation equipment. The contact section of the lower shell is provided with double-layer sealing strips to realize the waterproof effect, and there is also an air-filling hole on the waterproof shell. The device inflates air into the waterproof casing to increase the air pressure in the waterproof casing, which makes it more difficult for external liquids to enter the interior of the waterproof casing and improves the airtightness of the waterproof casing.

Optionally, the mutual inductance element includes a voltage transformer and a current transformer.

In practice, the output terminals of the program-controlled power supply supply power to the grid operation fault simulator through voltage transformers and current transformers respectively.

Since the simulated smart energy meter connected to the back end of the power grid operation fault simulator is a virtual load power supply, the program-controlled power supply provides virtual load current to the simulated smart energy meter, and the virtual load current is controlled by the program-controlled power supply receiving control host through communication conversion Generated from command data sent by the box.

Optionally, a communication conversion module is further arranged between the control host and the communication conversion control box.

In implementation, as shown in Figure 2, the communication conversion module and the control host are connected through a wireless network, so as to expand the range of communication with the control host. And the communication conversion module is also connected to the communication conversion control box through a wired cable, so as to convert the instruction data sent by the control host into serial data, and transmit the serial data to the communication conversion control box through a wired cable, so that The operator performs the distribution processing of the instruction data.

Optionally, the wired cable uses an RS232 or RS485 interface.

In implementation, in order to realize data communication between different components, the wired cables in this simulation device use an interface based on the RS232 standard. In order to further realize the networking function between different components, an interface based on the RS485 standard is also adaptively used between some components, so that while realizing point-to-point communication, the networking function can also be realized, thereby improving the scope of use of the simulation device .

The specific process of the power fault simulation equipment proposed in this application is:

The control host sends command data for generating preset faults to the communication conversion control box through the wireless network. The communication conversion control box analyzes the command data to obtain specific fault information. According to the different fault objects generated in the fault information, the fault information is Targeted transmission to at least one of the program-controlled power supply, grid operation fault simulator, and simulated smart energy meter through the RS485 wired cable, so that after the three receive fault information, the program-controlled power supply can output different types of fault voltage signals and Fault current signal, grid operation After receiving the fault voltage signal and/or fault current signal output by the programmable power supply, the fault simulator combines fault information to generate different types of typical grid fault example signals. The simulated smart energy meter generates specific fault voltage data and fault current data according to the typical fault example signal transmitted by the power grid operation fault simulator, combined with fault information, for realizing single fault simulation, three-phase three-line fault simulation and three-phase fault simulation. Simulated faults under phase four lines, so that the trainers can complete the troubleshooting work according to the specific faults generated, realize the simulation of smart grid faults, and realize the significance of this training device.

In actual use, the simulated smart energy meter can simulate faults including:

Single analog fault: loss of voltage, loss of current, power failure, power reverse.

Simulated faults under three-phase three-wire: A-phase failure, C-phase failure, A-phase power reversal, C-phase power reversal, A-phase voltage loss, C-phase voltage loss, total voltage loss, A-phase current loss, C-phase Current loss, A-phase current cut-off, C-phase current cut-off, power failure, voltage wrong phase sequence, current wrong phase sequence.

Simulated faults under three-phase four-wire: A-phase failure, B-phase failure, C-phase failure, A-phase power reversal, B-phase power reversal, C-phase power reversal, A-phase loss of voltage, B-phase loss of voltage, C-phase Phase voltage loss, total voltage loss, A-phase current loss, B-phase current loss, C-phase current loss, A-phase current cut-off, B-phase current cut-off, C-phase current cut-off, power failure, voltage wrong phase sequence , Current wrong phase sequence.

In the above process, the flow direction of command data is control host→communication conversion control box→programmable power supply/grid operation fault simulator/simulation smart energy meter, which reflects the process of specific fault generation. In fact, this training device can also complete fault checking Work, the specific process of the work is:

The communication fault control box obtains the fault voltage signal and fault current signal from the program-controlled power supply, obtains the typical power grid fault sample signal from the power grid operation fault simulator, and obtains the fault voltage data and fault current data from the simulated smart energy meter. The fault voltage signal and fault current signal, typical grid fault example signal, fault voltage data and fault current data are transmitted to the control host, so that the control host can check the received object with the command data sent to ensure that the program-controlled power supply, grid The faults presented by the fault simulator and the simulated smart energy meter are consistent with the preset faults contained in the command data of the control host, thus ensuring that the faults simulated by the training device to the trainers are valid for the smart grid , ultimately improving the skill level of trainers.

In the above verification process, the signal flow direction is program-controlled power supply/grid operation fault simulator/simulation smart energy meter→communication conversion control box→control host, which reflects the process of fault verification.

The invention provides power failure simulation equipment, including a power grid operation fault simulator connected with a program-controlled power supply, and a simulated intelligent electric energy meter connected with the power grid operation fault simulator, and a mutual inductance component is arranged between the program-controlled power supply and the power grid operation fault simulator ; The communication conversion control box connected with the program-controlled power supply, the power grid operation fault simulator, and the simulated smart energy meter through a wired cable; the control host connected with the communication conversion control box through a wireless network. Obtain the command data sent by the control host to generate preset faults through the communication conversion control box, and send the command data to the program-controlled power supply/grid operation fault simulator/simulation smart energy meter that specifically presents the fault through wired cables, and can also Fault checking is performed on the three components of the subsidence fault, so as to improve the usability of the training device, and finally improve the skill level of the trainers who use the training device.

The serial numbers in the above embodiments are for description only, and do not represent the sequence of the components during assembly or use.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention Inside.

Claims (6)

1. power failure simulator, it is characterised in that described power failure simulator, including:

The operation of power networks fault simulator being connected with programmable power supply, and the emulation being connected with described operation of power networks fault simulator Intelligent electric energy meter, is provided with mutual inductance assembly between described programmable power supply and described operation of power networks fault simulator；By wired The communication conversion control that cable is connected with described programmable power supply, described operation of power networks fault simulator, described artificial intelligence electric energy meter Case processed；The control main frame being connected with described communication conversion and control case by wireless network；

Described power failure simulator is placed in waterproof case, is divided into upper shell and lower house, upper shell at waterproof case Hinged by articulated elements with lower house, it is provided with double-layer seal adhesive tape in the cross section that upper shell contacts with lower house, at waterproof case Surface is provided with air-filled pore；It is provided with in waterproof case for carrying control main frame and the pedestal of power supply, and is used for receiving letter Number transceiver, relay-operated controller, the groove of relay matrix circuit.

Power failure simulator the most according to claim 1, it is characterised in that: described mutual-inductance element includes mutual induction of voltage Device summation current transformer.

Power failure simulator the most according to claim 1, it is characterised in that: in described control main frame and described communication Between conversion and control case, it is additionally provided with communication conversion module.

Power failure simulator the most according to claim 1, it is characterised in that: described wireline cable use RS232 or RS485 interface.

Power failure simulator the most according to claim 1, it is characterised in that: faulting instruction is led to by described control main frame Crossing described wireless network to send to described communication conversion and control case, described communication conversion and control case resolves according to described faulting instruction Be out of order information, and is sent to described programmable power supply, described operation of power networks event by described wireline cable by described fault message At barrier simulator, described artificial intelligence electric energy meter；

Described programmable power supply exports different types of failure voltage signal and fault-current signal according to described fault message；

Described operation of power networks fault simulator receives described failure voltage signal and described fault-current signal, in conjunction with described fault Information, produces different types of typical case's electric network fault example signal；

Described artificial intelligence ammeter receives described typical case's electric network fault example signal, in conjunction with described fault message, produces fault Voltage data and fault current data.

Power failure simulator the most according to claim 5, it is characterised in that:

Described control main frame obtains described failure voltage signal and described fault-current signal by described communication conversion and control case, Check with described faulting instruction；

Described control main frame obtains described typical case's electric network fault example signal by described communication conversion and control case, with described fault Instruction is checked；

Described control main frame obtains described false voltage data and described fault current data by described communication conversion and control case, Check with described faulting instruction.