CN203838937U - Portable relay protection setting value setting simulation training apparatus - Google Patents

Abstract

The utility model discloses a portable relay protection setting value setting simulation training apparatus. A control circuit and a storage battery are arranged in a housing. The housing comprises an upper housing and a lower housing. A liquid crystal display screen, a control keyboard and an ISP download interface are disposed on a front panel of the upper housing. A touch screen, a JTAG download port and a charging interface are disposed on a front panel of the lower housing. The control circuit includes a single-chip microcomputer circuit, a JTAG interface circuit, a power supply circuit, a microcontroller U1, an ISP interface circuit and a touch screen drive circuit. The microcontroller U1 is connected with multiple buttons of the control keyboard. The microcontroller U1 is also connected with an external crystal oscillator circuit and a reset circuit. The portable relay protection setting value setting simulation training apparatus helps to solve the problems of the prior art that a special training room has to be established for training staff in setting value setting. The apparatus has the advantages of training staff in relay protection setting valve setting quite conveniently, being low in cost, enabling manpower and material resources to be saved, etc.

Description

Portable Relay Protection Setting Simulation Training Device

technical field

The utility model relates to a portable relay protection fixed value setting simulation training device.

Background technique

With the rapid development of science and technology, the application of relay protectors in substations is becoming more and more extensive. It not only protects the safety of the equipment itself, but also ensures the normal production. Therefore, it is very important to do a good job in the setting of relay protection to ensure the safety of equipment and the normal operation of production.

Relay protection devices (including safety automatic devices) are the most basic, important and effective means to ensure the safety of power equipment and the stability of power systems. The correct actions of relay protection devices have saved and guaranteed the safe and stable operation of the power system countless times. However, this is also a double-edged sword. Once the relay protection device operates incorrectly, it will often become the cause of the grid accident and the culprit of the grid expansion accident. The shadow of incorrect action of relay protection can basically be found in previous major system collapses and large-scale power outages at home and abroad. The "three mistakes" accidents of relay protection are the main reason for the incorrect action of relay protection, including wrong setting, wrong touch and wrong wiring.

The special weather will affect the adaptability of the substation relay protection setting, and at the same time, there are cases of wrong setting of the relay protection in actual work. Relay protection setting calculation is an important work in power system production and operation. With the continuous expansion of the grid scale and the complexity of the grid structure, the workload and complexity of power system setting calculations are increasing. In order to prevent the occurrence of wrong setting in the process of on-site setting and improve the success rate of relay protection device setting once, it is necessary for the setting personnel to carry out a large number of setting training.

Therefore, in the power system, it is necessary to frequently train employees on the setting of relay protection, and it is necessary to completely simulate the process of setting the setting on site during the training. At present, the training on setting value setting of relay protection devices can only be carried out in a specific training room, so as to realize the simulation of the setting value setting process on site. And this kind of relay protection training room, because it needs to spend a lot of money to set up a training room, so at present it is only configured in specialized training institutions at the provincial company level. Only a small number of employees have access to training at any one time. The vast majority of employees do not have the opportunity to conduct training on setting of relay protection. However, in the power system, the accuracy of the setting value of the relay protection device, which is the lifeline of the safe and stable operation of the power grid, is extremely important. Therefore, there is an urgent need for a low-cost portable device to train employees on setting value setting of relay protection.

Utility model content

The utility model provides a portable relay protection fixed value setting simulation training device in order to avoid the shortcomings in the above-mentioned prior art, so as to solve the need to establish a special training room for the fixed value setting training of employees in the prior art It is convenient for employees to carry out training on relay protection setting value setting.

The utility model adopts the following technical solutions for solving technical problems.

The portable relay protection fixed value setting simulation training device is characterized in that it includes a casing, and a control circuit and a storage battery for powering the portable relay protection setting simulation training device are arranged inside the casing; The casing includes an upper casing and a lower casing; a liquid crystal display, a control keyboard and an ISP (In-System Programming, online programmable) download interface are arranged on the front panel of the upper casing; the front of the lower casing The panel is equipped with a touch screen, JTAG (Joint Test Action Group; joint test working group) download port and charging port;

The control circuit includes a single-chip microcomputer circuit, a JTAG interface circuit, a power supply circuit, a microcontroller U1, an ISP interface circuit and a touch screen drive circuit; the microcontroller U1 is connected with a plurality of keys of the control keyboard, and the microcontroller The device U1 is also connected with an external crystal oscillator circuit and a reset circuit; the microcontroller U1 is also connected with the ISP interface chip J2.

The structural features of the portable relay protection fixed value setting simulation training device of the present invention also lie in:

The single-chip microcomputer circuit includes a single-chip microcomputer LM3S615, a reset chip CAT811R, a reset button S10, a resistor R5, capacitors C5-C11, and a crystal oscillator Y2; the VCC terminal of the reset chip CAT811R is connected to an external power supply, and one end of the reset button S10 is connected to the reset The MR end of the chip CAT811R is connected, and the other end of the reset button S10 is grounded; the RST end of the reset chip CAT811R is connected to the RST end of the single-chip microcomputer LM3S615; one end of the resistor R5 is connected to the reset chip CAT811R The RST terminals are connected, and the other end of the resistor R5 is grounded;

Both ends of the capacitors C5-C11 are connected with the single-chip microcomputer LM3S615; On both ends of Y2, the other end of the capacitor C10 and the other end of the capacitor C11 are grounded.

The JTAG interface circuit includes a JTAG chip and a resistor group RP1 composed of 8 resistors connected in parallel with a resistance value of 10K; the resistor group RP1 is connected to the JTAG chip.

The power circuit includes a power interface circuit and a voltage stabilizing circuit; the power interface circuit includes a power plug connector J1, a capacitor C3, a light-emitting diode D2 and a resistor R2; the two ends of the capacitor C3 are respectively connected to the power plug connector J1 One end of the resistor R2 is connected to one end (+5V end) of the capacitor C3, and the other end of the resistor R2 is connected to the other end (+5V end) of the capacitor C3 through the light-emitting diode D2. GND terminal) connected;

The voltage stabilizing circuit includes a voltage stabilizing chip SPX1117M3-3.3 capable of outputting +3.3V voltage, an electrolytic capacitor C12, an electrolytic capacitor C13, and a voltage stabilizing diode D3; the anode of the voltage stabilizing diode D3 is connected to a +5V power supply, and the The negative pole of the voltage stabilizing diode D3 is connected to the positive pole of the electrolytic capacitor C12 and then connected to the Vin terminal of the voltage stabilizing chip SPX1117M3-3.3; the positive pole of the electrolytic capacitor C13 is connected to the Vout terminal of the voltage stabilizing chip SPX1117M3-3.3, The negative poles of the electrolytic capacitors C12 and C13 are both connected to the GND terminal of the voltage stabilizing chip SPX1117M3-3.3 and grounded.

The micro-controller U1 is ATMEGA16L; the multiple keys of the control keyboard include keys S1-S9; the keys S1-S9 are all connected to the micro-controller U1;

The external crystal oscillator circuit includes a capacitor C1, a capacitor C2 and a crystal oscillator Y1; both ends of the crystal oscillator Y1 are connected to the microcontroller U1; one end of the capacitor C1 and one end of the capacitor C2 are respectively connected to the crystal oscillator Y2 On both ends, the other end of the capacitor C1 and the other end of the capacitor C2 are grounded;

The reset circuit includes a reset button S0, a capacitor C4, a resistor R1 and a diode D1; one end of the reset button S0 connected in parallel with the capacitor C4 is grounded, and the other end of the reset button S0 connected in parallel with the capacitor C4 is connected to the The RESET terminal of the microcontroller U1 is connected; one end of the parallel connection of the resistor R1 and the diode D1 is connected to a +5V power supply, and the other end of the parallel connection of the resistor R1 and the diode D1 is connected to the RESET terminal of the microcontroller U1 connected.

The touch screen drive circuit includes a touch screen control chip ADS7846, capacitor C14, capacitor C15, and resistor R6; the capacitor C14, capacitor C15, and resistor R6 are all connected to the touch screen control chip ADS7846, and the touch screen is connected to the touch screen control chip ADS7846 is connected and driven and controlled by touch screen control chip ADS7846.

The liquid crystal display screen includes a liquid crystal display module LCD1602, and a resistor R3 and a resistor R4 are connected to the liquid crystal display module LCD1602.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

The portable relay protection fixed value setting simulation training device of the utility model realizes the relay protection fixed value setting simulation through the internal circuit structure, and realizes the training of simulated on-site work for the learners. The portable relay protection fixed value setting training device can Completely simulate the on-site setting process, and only spend a small amount of money to complete repetitive training for employees. Small design, good portability.

1) Improve the one-time success rate of on-site personnel setting value setting; after the development of the portable relay protection setting value setting training and assessment device is completed and put into use, the on-site personnel will carry out the setting value setting work again after passing the training and assessment of the device, which can greatly improve the setting value. The value sets the success rate once.

2) Save a lot of resources for on-site personnel training; if using on-site devices for setting value setting training, it is necessary to notify the dispatcher to arrange a power outage plan, which will consume a lot of human, financial and material resources; if a physical laboratory is established for simulation training, it is necessary to purchase a special The model protection device also needs to consume a lot of human, financial and material resources. Through the use of the device, on-site personnel can carry out simulation, simulation, setting and setting work on the device, and at the same time, they can also perform assessment work, which saves a lot of human, financial and material resources for the company.

3) Shorten the power outage time; After the professionals who have passed the device training and assessment perform the setting work, the work efficiency will be greatly improved, and the working time will be greatly shortened, which can shorten the working time and shorten the power outage time.

4) Improve social influence; by shortening the power outage time, it can provide the society with more guaranteed quality electric energy, and reduce the number of power outages and power outage time of users. Fully embody the core social responsibility of the power supply department - fulfill the responsibility of scientific development and safe power supply, ensure safer, more economical, cleaner and sustainable energy supply; provide strong support for the construction of a strong smart grid; maximize the improvement of the power supply department social influence and enhance the positive image of the power supply sector.

The portable relay protection fixed value setting simulation training device of the utility model solves the problem in the prior art that a special training room needs to be established for employees to carry out fixed value setting training, and can very conveniently carry out relay protection fixed value setting for employees Training, low cost, saving human and material resources and other advantages.

Description of drawings

Fig. 1 is a structural schematic diagram of a portable relay protection setting simulation training device of the present invention.

Fig. 2 is an embodiment of the front panel of the upper casing of the portable relay protection setting simulation training device of the present invention.

Fig. 3 is an embodiment of the front panel of the upper casing of the portable relay protection setting simulation training device of the present invention.

Fig. 4 is the circuit diagram of the single-chip microcomputer circuit of the portable relay protection fixed value setting simulation training device of the present invention.

5 is a circuit diagram of the JTAG interface circuit of the power supply circuit of the portable relay protection setting simulation training device of the present invention.

Fig. 6 is a circuit diagram of the power interface circuit of the portable relay protection setting simulation training device of the present invention.

Fig. 7 is a circuit diagram of the voltage stabilizing circuit of the portable relay protection setting simulation training device of the present invention.

FIG. 8 is a circuit diagram of the microcontroller U1 of the portable relay protection setting simulation training device of the present invention.

FIG. 9 is a circuit diagram of an external crystal oscillator circuit of a portable relay protection setting simulation training device in the prior art.

Fig. 10 is a circuit diagram of the reset circuit of the portable relay protection setting simulation training device of the present invention.

Fig. 11 is a circuit diagram of the ISP interface circuit of the portable relay protection setting simulation training device of the present invention.

Fig. 12 is a circuit diagram of the touch screen driving circuit of the portable relay protection setting simulation training device of the present invention.

Fig. 13 is a circuit diagram of the liquid crystal display module LCD1602 of the portable relay protection setting simulation training device of the present invention.

In the accompanying drawings 1-3, 1 casing, 2 upper casing, 3 lower casing, 4 battery, 5 liquid crystal display, 6 control keyboard, 7ISP download interface, 8 touch screen, 9JTAG download port, 10 charging interface, 11 buttons .

The utility model will be further described below through specific embodiments in conjunction with the accompanying drawings.

Detailed ways

Referring to Figures 1 to 13, the portable relay protection setting simulation training device includes a housing 1, and the housing 1 is provided with a control circuit and a storage battery for powering the portable relay protection setting simulation training device 4. The housing 1 includes an upper housing 2 and a lower housing 3, as shown in Figure 1-3; on the front panel of the upper housing 2, a liquid crystal display 5, a control keyboard 6 and an ISP download Interface 7; the front panel of the lower housing 3 is provided with a touch screen 8, a JTAG download port 9 and a charging interface 10;

Described control circuit comprises single-chip microcomputer circuit, JTAG interface circuit, power supply circuit, microcontroller U1, ISP interface circuit (as shown in Figure 11,) and touch screen drive circuit; Described microcontroller U1 and a plurality of described control keyboards The buttons 11 are connected, and the microcontroller U1 is also connected with an external crystal oscillator circuit and a reset circuit; the microcontroller U1 is also connected with an ISP interface chip J2 (as shown in FIG. 11 ).

As shown in Figure 4, the single-chip microcomputer circuit includes a single-chip microcomputer LM3S615, a reset chip CAT811R, a reset button S10, a resistor R5, capacitors C5-C11, and a crystal oscillator Y2; the VCC terminal of the reset chip CAT811R is connected to an external power supply, and the reset button S10 One end of the reset chip CAT811R is connected to the MR end, and the other end of the reset button S10 is grounded; the RST end of the reset chip CAT811R is connected to the RST end of the single-chip microcomputer LM3S615; one end of the resistor R5 is connected to the The RST terminals of the reset chip CAT811R are connected, and the other terminal of the resistor R5 is grounded;

Both ends of the capacitors C5-C11 are connected with the single-chip microcomputer LM3S615; On both ends of Y2, the other end of the capacitor C10 and the other end of the capacitor C11 are grounded.

As shown in FIG. 5 , the JTAG interface circuit includes a JTAG chip and a resistor group RP1 composed of 8 resistors connected in parallel with a resistance value of 10K; the resistor group RP1 is connected to the JTAG chip.

The power circuit includes a power interface circuit and a voltage stabilizing circuit; as shown in Figure 6, the power interface circuit includes a power plug joint J1, a capacitor C3, a light emitting diode D2 and a resistor R2; the two ends of the capacitor C3 are respectively connected to On the two connecting terminals of the power plug connector J1; one end of the resistor R2 is connected to one end (+5V end) of the capacitor C3, and the other end of the resistor R2 is connected to the The other end (GND end) of the capacitor C3 is connected;

As shown in Figure 7, the voltage stabilizing circuit includes a voltage stabilizing chip SPX1117M3-3.3 capable of outputting +3.3V voltage, an electrolytic capacitor C12, an electrolytic capacitor C13, and a voltage stabilizing diode D3; the anode of the voltage stabilizing diode D3 is connected to +5V The power supply is connected, the negative pole of the voltage stabilizing diode D3 is connected to the positive pole of the electrolytic capacitor C12 and then connected to the Vin terminal of the voltage stabilizing chip SPX1117M3-3.3; the positive pole of the electrolytic capacitor C13 is connected to the positive pole of the voltage stabilizing chip SPX1117M3-3.3 The Vout terminals of the electrolytic capacitors C12 and C13 are connected to the GND terminal of the voltage regulator chip SPX1117M3-3.3 and grounded.

As shown in Figure 8, the microcontroller U1 is ATMEGA16L; the multiple keys of the control keyboard include buttons S1～S9; the buttons S1～S9 are all connected to the microcontroller U1;

As shown in Figure 9, the external crystal oscillator circuit includes a capacitor C1, a capacitor C2 and a crystal oscillator Y1; both ends of the crystal oscillator Y1 are connected to the microcontroller U1; one end of the capacitor C1 and one end of the capacitor C2 respectively connected to both ends of the crystal oscillator Y2, the other end of the capacitor C1 and the other end of the capacitor C2 are grounded;

As shown in Figure 10, the reset circuit includes a reset button S0, a capacitor C4, a resistor R1 and a diode D1; one end of the reset button S0 and the capacitor C4 are connected in parallel to ground, and the reset button S0 and the capacitor C4 are connected in parallel The other end of the resistor R1 is connected to the RESET end of the microcontroller U1; one end of the parallel connection of the resistor R1 and the diode D1 is connected to a +5V power supply, and the other end of the parallel connection of the resistor R1 and the diode D1 is connected to the micro The RESET end of the controller U1 is connected.

As shown in Figure 12, the touch screen drive circuit includes a touch screen control chip ADS7846, capacitor C14, capacitor C15, and resistor R6; the capacitor C14, capacitor C15, and resistor R6 are all connected to the touch screen control chip ADS7846, and the touch screen It is connected with the touch screen control chip ADS7846 and driven and controlled by the touch screen control chip ADS7846.

As shown in FIG. 13 , the liquid crystal display screen includes a liquid crystal display module LCD1602, and a resistor R3 and a resistor R4 are connected to the liquid crystal display module LCD1602.

During specific implementation, the setting method of the keyboard can simulate the button layout of the actual protection device on site, so that the device users can be familiar with the button layout of the protection device during training, and better achieve the training effect. Fig. 2 is an embodiment of the front panel of the upper casing, the left side is a liquid crystal display, the right side is a control button, and the buttons are circular, and the left side, the middle and the right side are respectively provided with 2, 5 and 2 buttons , a total of 9 buttons. In another embodiment of the front panel of the upper housing in Fig. 3, the left side is a liquid crystal display, and the keys in the right keypad are square keys arranged in a nine-square grid. The 9 buttons realize the button functions of "Up", "Down", "Left", "Right", "Add", "Minus", "Confirm", "Cancel" and "Area Code" on the relay protection device respectively. The liquid crystal display is a liquid crystal display module LCD1602 with a size of 16*4. Relay protection fixed value setting simulation operation part of the circuit is controlled by ATMEGA16L single-chip microcomputer and displayed by 16*4 1602 LCD display.

The power supply circuits in Figures 6 and 7 are connected to a 5V power supply from the outside to provide two voltages of 5V and 3.3V for the internal circuit.

The portable relay protection fixed value setting simulation training device of the present utility model comprises a casing, and a control circuit and a storage battery for powering the portable relay protection fixed value setting simulation training device are arranged inside the casing; the casing The body includes an upper case and a lower case. The upper and lower shells together form a portable box structure, which is easy to carry. At the same time, it has a power interface, and a battery is installed inside the shell, which can also be used when the external power supply cannot be connected, so that the training work of relay protection setting simulation is very convenient and fast, which improves the training efficiency and reduces the training time. The cost is improved, and the success rate of on-site setting value setting is improved.

Although the utility model has been described above according to the preferred embodiment, this does not mean that the scope of the utility model is only limited to the above-mentioned structure, as long as the structures covered by the claims of the utility model are all within the scope of protection . Equivalent alternative structures that can be easily developed by those skilled in the art after reading the above descriptions, all equivalent changes and modifications made without departing from the spirit and scope of the present invention shall be covered by the protection of the present invention. within range.

Claims (7)

1. The portable relay protection fixed value setting simulation training device is characterized in that it includes a housing (1), and the housing (1) is provided with a control circuit and is used for portable relay protection fixed value setting simulation training A storage battery (4) powered by the device; the housing (1) includes an upper housing (2) and a lower housing (3); a liquid crystal display (5) is arranged on the front panel of the upper housing (2) ), a control keyboard (6) and an ISP download interface (7); the front panel of the lower housing (3) is provided with a touch screen (8), a JTAG download port (9) and a charging interface (10); The control circuit includes a single-chip microcomputer circuit, a JTAG interface circuit, a power supply circuit, a microcontroller U1, an ISP interface circuit and a touch screen drive circuit; the microcontroller U1 is connected with a plurality of keys (11) of the control keyboard, so The microcontroller U1 is also connected with an external crystal oscillator circuit and a reset circuit; the microcontroller U1 is also connected with an ISP interface chip J2. 2. The portable relay protection setting simulation training device according to claim 1, characterized in that, the single-chip microcomputer circuit includes a single-chip microcomputer LM3S615, a reset chip CAT811R, a reset button S10, a resistor R5, capacitors C5-C11, and a crystal oscillator Y2 The VCC end of the reset chip CAT811R is connected to an external power supply, one end of the reset button S10 is connected to the MR end of the reset chip CAT811R, and the other end of the reset button S10 is grounded; the RST end of the reset chip CAT811R It is connected with the RST end of the single-chip microcomputer LM3S615; one end of the resistor R5 is connected with the RST end of the reset chip CAT811R, and the other end of the resistor R5 is grounded; Both ends of the capacitors C5-C11 are connected with the single-chip microcomputer LM3S615; On both ends of Y2, the other end of the capacitor C10 and the other end of the capacitor C11 are grounded. 3. the portable relay protection fixed value setting simulation training device according to claim 1, is characterized in that, described JTAG interface circuit comprises JTAG chip and the resistor group that is made of 8 resistors that the resistance value is 10K two-by-two parallel connection RP1; the resistor group RP1 is connected to the JTAG chip. 4. The portable relay protection setting simulation training device according to claim 1, characterized in that, the power circuit includes a power interface circuit and a voltage stabilizing circuit; the power interface circuit includes a power plug connector J1, a capacitor C3 , light emitting diode D2 and resistor R2; the two ends of the capacitor C3 are respectively connected to the two connection terminals of the power plug connector J1; one end of the resistor R2 is connected to one end of the capacitor C3, and the resistor The other end of R2 is connected to the other end of the capacitor C3 through the light emitting diode D2; The voltage stabilizing circuit includes a voltage stabilizing chip SPX1117M3-3.3 capable of outputting +3.3V voltage, an electrolytic capacitor C12, an electrolytic capacitor C13, and a voltage stabilizing diode D3; the anode of the voltage stabilizing diode D3 is connected to a +5V power supply, and the The negative pole of the voltage stabilizing diode D3 is connected to the positive pole of the electrolytic capacitor C12 and then connected to the Vin terminal of the voltage stabilizing chip SPX1117M3-3.3; the positive pole of the electrolytic capacitor C13 is connected to the Vout terminal of the voltage stabilizing chip SPX1117M3-3.3, The negative poles of the electrolytic capacitors C12 and C13 are both connected to the GND terminal of the voltage stabilizing chip SPX1117M3-3.3 and grounded. 5. The portable relay protection setting simulation training device according to claim 1, characterized in that, the microcontroller U1 is ATMEGA16L; the multiple keys of the control keyboard include keys S1～S9; the keys S1～S9 are all connected with the microcontroller U1; The external crystal oscillator circuit includes a capacitor C1, a capacitor C2 and a crystal oscillator Y1; both ends of the crystal oscillator Y1 are connected to the microcontroller U1; one end of the capacitor C1 and one end of the capacitor C2 are respectively connected to the crystal oscillator Y2 On both ends, the other end of the capacitor C1 and the other end of the capacitor C2 are grounded; The reset circuit includes a reset button S0, a capacitor C4, a resistor R1 and a diode D1; one end of the reset button S0 connected in parallel with the capacitor C4 is grounded, and the other end of the reset button S0 connected in parallel with the capacitor C4 is connected to the The RESET terminal of the microcontroller U1 is connected; one end of the parallel connection of the resistor R1 and the diode D1 is connected to a +5V power supply, and the other end of the parallel connection of the resistor R1 and the diode D1 is connected to the RESET terminal of the microcontroller U1 connected. 6. The portable relay protection setting simulation training device according to claim 1, characterized in that, the touch screen drive circuit includes a touch screen control chip ADS7846, capacitor C14, capacitor C15, resistor R6; the capacitor C14, capacitor Both C15 and resistor R6 are connected to the touch screen control chip ADS7846, and the touch screen is connected to the touch screen control chip ADS7846 and driven and controlled by the touch screen control chip ADS7846. 7. The portable relay protection setting simulation training device according to claim 1, wherein the liquid crystal display screen includes a liquid crystal display module LCD1602, and the liquid crystal display module LCD1602 is connected with a resistor R3 and a resistor R4.