CN203951261U - switchyard fault simulator - Google Patents

Abstract

The utility model discloses a switch station fault simulator, which generates a fault signal and transmits the fault signal to a feeder automatic control unit, comprising: a main controller; a voltage and current output unit connected with the main controller; connected with the main controller The data bus; the analog-to-digital conversion unit, remote signaling unit, and remote control unit connected to the data bus; the sampling unit connected to the voltage, current output unit, and analog-to-digital conversion unit; the remote signaling unit is used to receive the remote control of the feeder automation control unit Operation information and time; the remote control unit is used to feed back the status information of the simulator to the feeder automation control unit; the sampling unit is used to sample the generated voltage and current, and record the magnitude and time of the voltage and current. The utility model can simulate and generate switch station fault signals, realize button-type control or command-type control, can receive remote control instructions from the feeder automation control unit, and perform remote control actions. The wiring is convenient, safe and easy to operate.

Description

Switchyard Failure Simulator

technical field

The invention relates to the technical field of electric power testing, in particular to a switch station fault simulator.

Background technique

With the continuous development of the economy and the improvement of people's lives, users' requirements for the quality of power supply continue to increase. Facing the existing problems in the distribution network, such as outdated equipment, low power supply level, low automation level, and backward management, it is necessary to carry out the project under realistic conditions. Distribution network automation is a top priority. Realizing distribution network automation is the most effective means for distribution network system to improve power supply reliability. It can not only reduce the scope of power outages, shorten the time of power outages, improve the quality of power supply, and provide users with higher quality services, but also reduce the labor intensity of operators, reduce personnel expenses, and improve labor productivity. Finally, the power supply department can monitor and coordinate distribution. The purpose of network system balance, economic operation, reduce network loss, improve economic and social benefits.

The electric power industry is a basic and strategic industry of the country, and its safe and reliable operation is directly related to the development of the national economy, the quality of life of the people and national security. However, the security control of modern large-scale power grids is a complex problem that has not been well solved at present. In my country, with the determination of the general policy of "smart grid" development in my country's electric power industry, the research on the reliability of power supply network has been raised to a higher level. In terms of scientific research, among the first 10 major projects funded by State Grid and China Southern Power Grid in 2010, there are research projects on major scientific issues of power system disaster prevention and economic operation. In September 2004, the Ministry of Science and Technology approved another 973 project "Basic Research on Improving the Operational Reliability of Large-scale Interconnected Power Grids". The basic theoretical research of the problem". In view of the important role of the electric power industry in our country's national economy, ensuring the safety, stability and economic operation of our country's power grid is an extremely important and urgent research topic.

As a stage in the development process of power system automation, distribution network automation is based on the automation of the upper level power grid (transmission network). At present, power grids at home and abroad have basically realized the dispatching automation and substation automation of the transmission network or high-voltage distribution network. The automation of these voltage level grids is the premise and basis for the implementation of distribution network automation, but it is no longer the scope of its implementation. Therefore, according to my country's current power grid management system and actual conditions, the distribution network that implements distribution network automation generally refers to the medium and low voltage distribution network directly facing end users at 10kV and below.

At present, the operational reliability of the distribution network is the weak link in the operation of my country's power grid. In view of the fact that the distribution network directly connects the majority of users, improving the operation and management level of the distribution network is an important task for my country's power companies. In the Twelfth Five-Year Plan, the topics of improving the reliability of distribution network automation and improving power quality have been put on the important agenda of the State Grid Corporation of China, and the construction of smart grids has also risen to a national strategy.

Intelligent distributed feeder automation is one of the local feeder automation methods. The intelligent distributed power distribution terminal is an important component of intelligent distributed feeder automation. It is independent of the main station and sub-station, and has the advantages of distributed and autonomous.

In order to verify the reliability and correctness of the FA logic (feeder automation), it is necessary to conduct a comprehensive test on the FA logic of the power distribution terminal on the actual line before the FA function is put into use to ensure the normal operation of the FA logic.

Since the actual line has been put into operation and the equipment is in working condition, if the FA logic is verified in the case of a power outage, it will cause relatively large losses to the user's power consumption. If the FA logic is tested without a power failure, it will encounter problems in all aspects. There are no small difficulties, such as fault simulation mode, switch action status, fault handling process records, etc.

Research on the distribution network automation simulation test platform can conduct a comprehensive test on distribution network products. The development of detection tools can solve the problem of whether the fault occurs synchronously. The distribution network automation equipment produced by distribution network automation manufacturers conducts a comprehensive and comprehensive inspection. The development of this detection platform will provide strong technical support for a better understanding of the strategy of the distribution network management system, and improve the operation and management level of the distribution network.

Research report analysis software and engineering standardization are very helpful to team work. Through the research of simulation test platform and engineering standardization, problems such as numerous equipment manufacturers, different software, and unclear debugging process are solved.

Contents of the invention

The purpose of the present invention is to provide a switch station fault simulator, which can simulate and generate switch station fault signals, realize button control or command control, can receive remote control commands from FA control units, and perform remote control functions. The power supply method is simple and portable. Convenient, convenient wiring, safe, will not cause personal injury to the operator, simple operation, clear marking, the operator can operate the equipment without professional guidance.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a switchyard fault simulator, which generates a fault signal and transmits the fault signal to the feeder automation control unit, which is characterized in that it includes:

The main controller is used to record the sampling data and control the output of voltage and current;

Voltage and current output units connected to the main controller;

The voltage and current output unit is used to output voltage and current according to the command of the main controller;

A data bus connected to the main controller;

Analog-to-digital conversion unit, remote signaling unit, and remote control unit connected to the data bus;

A sampling unit connected to the voltage and current output unit and the analog-to-digital conversion unit respectively;

The remote signaling unit and the remote control unit are respectively connected with the feeder automation control unit;

The remote signaling unit is used to receive the remote control operation information and time of the feeder automation control unit;

The remote control unit is used to send the state information of the simulator to the feeder automation control unit;

The sampling unit is used to sample the voltage and current generated by the voltage and current output unit, record the magnitude and time of the voltage and current, and transmit these data to the main controller through the analog-to-digital conversion unit and the data bus.

The main controller includes a GPS module,

The GPS module is synchronized with the satellite clock.

Preferably, the switchyard fault simulator includes a display unit,

The display unit is connected to the data bus for displaying the current status of the simulator and the recorded data information.

Preferably, the switchyard fault simulator includes an indicating unit,

The indicator unit is connected to the data bus, and includes an external power indicator, an output status indicator, a running indicator, a communication indicator, and a voltage and current output stop indicator.

Compared with the prior art, the switchyard fault simulator of the present invention has the following advantages: it can simulate the fault of the switchyard, and transmit the fault signal to the feeder automation control unit, and the feeder automation control unit starts FA protection according to the received fault signal, The protection action is transmitted to the switchyard fault simulator. After receiving the remote control action command, the switchyard fault simulator executes the remote control action and records the remote control action at the same time.

Description of drawings

Fig. 1 is a structural block diagram of a switchyard fault simulator of the present invention.

Detailed ways

The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

The switch station does not have a power distribution terminal. The fault of the simulated switch station is to communicate with the RTU (abbreviation of REMOTE TERMINAL UNIT, which is the remote data terminal) in the switch station and the automatic control unit of the feeder. Pass it to the feeder automation control unit, the feeder automation control unit starts the FA protection according to the received fault signal, and transmits the protection action to the switchyard fault simulator, and the switchyard fault simulator executes the remote control action after receiving the remote control action command Record the remote control action.

As shown in Figure 1, a switch station fault simulator generates a fault signal and transmits the fault signal to the feeder automation control unit, including: a main controller 1 for recording sampling data and controlling the output of voltage and current; The voltage and current output unit 2 connected to the controller 1; the voltage and current output unit 2 is used to output voltage and current according to the command of the main controller 1; the data bus 3 connected to the main controller 1; the module connected to the data bus 3 Digital conversion unit 4, remote signaling unit 5, remote control unit 6; sampling unit 7 connected to voltage and current output unit 2, analog-to-digital conversion unit 4 respectively; remote signaling unit 5, remote control unit 6 connected to feeder automation control unit respectively; The remote signal unit 5 is used to receive the remote control operation information and time of the feeder automation control unit; the remote control unit 6 is used to send the state information of the simulator to the feeder automation control unit; the sampling unit 7 is used to sample the voltage and the voltage generated by the current output unit 2 , current, and record the magnitude and time of voltage and current, and transmit these data to the main controller 1 through the analog-to-digital conversion unit 4 and the data bus 3 .

The main controller 1 includes a GPS module, and the GPS module is synchronized with the satellite clock.

The switchyard fault simulator further includes a display unit 8 connected to the data bus 3 for displaying the current state of the simulator and the recorded data information.

The switchyard fault simulator further includes an indicating unit 9, which is connected to the data bus 3 and includes an external power supply indicator light, an output status indicator light, a running indicator light, a communication indicator light, and a voltage and current output stop indicator light.

Specific application: network multiple switching station fault simulators to form a power supply network;

Multiple switch station fault simulators are synchronized with the satellite clock through the GPS module to ensure that the fault starts at the same time;

A plurality of switchyard fault simulators respectively send fault information to the feeder automation control unit through the remote control unit 6;

The feeder automation control unit obtains a fault handling strategy according to the line status and fault information of multiple switch station fault simulators;

A plurality of switchyard fault simulators respectively receive the remote control operation information and time of the feeder automation control unit through the remote signaling unit 6;

Several switchyard fault simulators respectively execute the remote control actions of the feeder automation control unit to complete the fault simulation.

During operation, the main controller 1 sends an instruction to output or stop a certain voltage and current to the voltage and current output unit 2 through communication according to the preset or other remote control information, and the voltage and current output unit 2 according to the instruction In response, output or stop outputting a certain amount of voltage and current. Moreover, the voltage of the voltage and current output unit 2 should be connected to the sampling unit 7 in parallel, and the current output should be connected in series to the sampling unit 7. While outputting to the feeder automation control unit, the sampling unit 7 needs to sample the output voltage and current.

Although the content of the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. Various modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the above disclosure. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims (4)

1. A switchyard fault simulator generates a fault signal and transmits the fault signal to the feeder automation control unit, is characterized in that, comprising: Main controller (1), used to record sampling data and control the output of voltage and current; A voltage and current output unit (2) connected to the main controller (1); The voltage and current output unit (2) is used to output voltage and current according to the command of the main controller (1); a data bus (3) connected to the main controller (1); An analog-to-digital conversion unit (4), a remote signaling unit (5), and a remote control unit (6) connected to the data bus (3); A sampling unit (7) connected to the voltage and current output unit (2) and the analog-to-digital conversion unit (4) respectively; The remote signaling unit (5) and the remote control unit (6) are respectively connected to the feeder automation control unit; The remote signaling unit (5) is used to receive the remote control operation information and time of the feeder automation control unit; The remote control unit (6) is used to transmit the status information of the simulator to the feeder automation control unit; The sampling unit (7) is used to sample the voltage and current generated by the voltage and current output unit (2), record the magnitude and time of the voltage and current, and pass these data through the analog-to-digital conversion unit (4), the data bus (3) passed to the main controller (1). 2. The switchyard fault simulator according to claim 1, wherein the main controller (1) includes a GPS module, The GPS module is synchronized with the satellite clock. 3. The switchyard fault simulator according to claim 1, further comprising a display unit (8), The display unit (8) is connected to the data bus (3) for displaying the current state of the simulator and the recorded data information. 4. The switchyard fault simulator according to claim 1, further comprising an indicating unit (9), The indication unit (9) is connected to the data bus (3), and includes an external power supply indicator light, an output status indicator light, a running indicator light, a communication indicator light, and a voltage and current output stop indicator light.