CN215300167U - High-capacity intelligent integrated power capacitance compensation device - Google Patents

Abstract

The utility model discloses a large-capacity intelligent integrated power capacitance compensation device, which belongs to the technical field of power capacitance compensation devices and solves the problems of easy failure and insufficient safety such as explosion of capacitor components, the key points of the technical proposal are that each three-phase compensation module is connected to a three-phase wiring terminal through a fling-cut switch, the three-phase compensation module and the three-phase compensation module respectively comprise a capacitor component which is integrated in an explosion-proof shell, the explosion-proof shell is provided with a temperature sensor, a liquid level sensor and insulating liquid, the capacitor component is immersed in the insulating liquid, the liquid level sensor is arranged on the side wall of the explosion-proof shell and is used for detecting the liquid level change of the insulating liquid, the temperature sensor is arranged outside the explosion-proof shell and is used for detecting the environmental temperature of the environmental explosion-proof shell, and the intelligent safety module judges the safety level according to the temperature signal and the liquid level signal, and controlling the effect of protecting the switching switch module.

Description

High-capacity intelligent integrated power capacitance compensation device

Technical Field

The utility model relates to a power capacitance compensation device field especially relates to an integrated power capacitance compensation device of large capacity intelligence.

Background

At present, publication (bulletin) no: CN204290325U patent, an intelligent integrated dynamic power capacitance compensation device, in which a circuit structure is connected with a high-power thyristor, a reactor and a capacitor.

It can be seen that the installation of the capacitor in the above compensation device is very important, and it is known that in such a large-capacity power capacitance compensation device, the connection mode of the capacitor compensation includes a three-phase compensation module and a three-phase compensation module, the three-phase compensation module and the three-phase compensation module all relate to the capacitor, and the capacitor is generally grouped into three groups.

During the operation of the capacitor bank, the capacitor bank is found to generate heat after long-term operation, and if the heat is accumulated, the outer shell of the capacitor bank is easy to expand or crack and even explode. Therefore, further improvement in safety protection of the capacitor module is required.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's weak point, solve the technical problem in the correlation technique to a certain extent at least, provide a large capacity intelligence integrated power capacitance compensation device, have and carry out the work control to capacitor assembly, the safety protection function improves the advantage of device operational reliability and stability.

In order to solve the technical problem, the technical scheme of the utility model is that: a high-capacity intelligent integrated power capacitance compensation device comprises a three-phase wiring terminal, a plurality of fling-cut switch modules and a plurality of three-phase common compensation modules, and a plurality of three-phase compensation modules, each three-phase compensation module is connected to the three-phase wiring terminal through a switching switch, the three-phase co-compensation module and the three-phase sub-compensation module respectively comprise capacitor components which are integrated in the explosion-proof shell, the explosion-proof shell is provided with a temperature sensor, a liquid level sensor and insulating liquid, the capacitor component is immersed in the insulating liquid, the liquid level sensor is arranged on the side wall of the explosion-proof shell and used for detecting the liquid level change of the insulating liquid, the temperature sensor is arranged outside the explosion-proof shell and used for detecting the environmental temperature of the environment explosion-proof shell;

the intelligent safety module judges the safety level according to the temperature signal and the liquid level signal and controls the switching switch module to perform protection action.

Through the technical scheme, the circuit is controlled by utilizing the fling-cut switch module, so that the input quantity of the three-phase separate compensation module and the three-phase common compensation module is freely controlled, the capacitor assembly can be more intensively arranged and integrated in the explosion-proof shell, the installation is more reliable and effective, the wire connection end of the capacitor assembly is connected with the explosion-proof shell into a whole, the explosion-proof shell is used for safety protection, the damage is avoided, in addition, the explosion-proof shell is internally sealed by insulating liquid, and simultaneously, the temperature sensor and the liquid level sensor are utilized for monitoring whether the volume of the capacitor is abnormal in real time, people know that if the volume of the capacitor assembly is abnormal, if the expanded volume is larger than the set safety level threshold value, the intelligent safety module can be directly utilized for disconnecting the compensation work of the capacitor assembly, and after the disconnection, further deterioration of the device can be avoided, thereby improving safety.

Preferably, the intelligent safety module comprises a temperature judgment module, a liquid level judgment module, an AND gate circuit, an OR gate circuit, a selection switch and a warning circuit, the temperature sensor is connected with the temperature judgment module, the liquid level sensor is connected with the liquid level judgment module, the output ends of the temperature judgment module and the liquid level judgment module are connected with the AND gate circuit or the OR gate circuit through the selection switch, and the output ends of the AND gate circuit and the OR gate circuit are connected with the warning circuit.

Through above-mentioned technical scheme, utilize temperature sensor and level sensor, temperature and liquid level in the control explosion-proof shell body utilize temperature to judge module, liquid level to judge the module simultaneously and carry out signal judgment and handle, avoid the misjudgement, improve the accuracy, and "gate circuit," or "gate circuit carries out the logic processing of signal to logic processing function can switch, utilizes the select switch to switch. When the AND gate circuit is selected, the judgment condition is strict, the warning circuit can work only when dual abnormity of temperature and liquid level is required to be met, when a selection switch is switched to the OR gate logic circuit, the mechanism can be judged by the meter, and when any abnormity of temperature or liquid level occurs, the warning circuit can directly work.

Preferably, the warning circuit comprises a triode Q1, a warning light, a relay and a buzzer, wherein a coil of the relay is connected with a collector of a triode Q1, a base of the triode Q1 is used for being connected with output ends of an AND gate circuit and an OR gate circuit, an emitting electrode of the triode Q1 is grounded, and the warning light and the buzzer are connected with the coil of the relay in parallel.

Through above-mentioned technical scheme, warning circuit's function is the suggestion of realizing reporting to the police, and when the behavior is unusual, relay work this moment, and warning light and bee calling organ all work simultaneously for the staff can in time know the device unusual, and the relay realizes the protection that opens circuit.

Preferably, the relay includes a relay coil and a normally closed switch, and the normally closed switch is connected to a bus line on the three-phase terminal.

Through above-mentioned technical scheme, through the disconnection of control circular telegram total line for capacitor assembly's compensation arrangement can avoid further damage.

Preferably, the liquid level sensor comprises a magnetic floating ball and a Hall sensor module fixed on the outer wall of the explosion-proof shell and used for sensing the height of the magnetic floating ball, a limiting groove is formed in the inner wall of the explosion-proof shell, the magnetic floating ball is installed in the limiting groove and floats up and down, and the Hall sensor module is close to the magnetic floating ball and used for sensing a magnetic field.

Through above-mentioned technical scheme, in order to realize wireless detection liquid level, and let level sensor be convenient for maintain, then need set up its main circuit device in explosion-proof housing's outside, consequently, utilize magnetic magnet floater to be showing the liquid level height, utilize hall sensor to carry out the principle of responding to the magnetic field that is close to its detection range, thereby realize that hall sensor module sets up in explosion-proof housing outsidely, carry out the liquid level to explosion-proof housing inside and detect, thereby be convenient for the maintenance and the maintenance in later stage.

Compared with the prior art, the utility model discloses technical effect mainly embodies in following aspect:

1. the explosion-proof shell is safer and more reliable, and can be used for safety protection, so that the damage caused by explosion of the capacitor assembly is avoided or reduced;

2. the capacitor assembly is placed under the insulating liquid, so that the effects of isolation and insulation sealing are achieved, and the safety is improved;

3. carry out physical monitoring through intelligent security module to capacitor assembly's work, judge the volume change to can effectively open circuit the protection, improve fail safe nature.

Drawings

FIG. 1 is a schematic diagram of the wiring of the compensating device in the embodiment;

FIG. 2 is a schematic view of the structural assembly of the capacitor assembly in the example;

FIG. 3 is a partial circuit diagram of an intelligent security module in an embodiment;

fig. 4 is a schematic diagram of an alarm circuit of the intelligent security module in the embodiment.

Reference numerals: 1. a three-phase terminal; 2. a switching switch module; 3. a three-phase co-compensation module; 4. a three-phase sub-compensation module; 5. a capacitor component; 6. an explosion-proof housing; 601. a conductive post; 7. a temperature sensor; 8. a liquid level sensor; 801. a magnet floating ball; 802. a Hall sensor module; 803. a limiting groove; 9. an insulating liquid; 10. an intelligent security module; 101. a temperature judgment module; 102. a liquid level judgment module; 103. an AND gate circuit; 104. an OR gate circuit; 105. a selector switch; 106. a warning circuit; 201. a relay coil; 202. a normally closed switch.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and grasped.

Example (b):

a large-capacity intelligent integrated power capacitance compensation device is shown in a figure 1 and comprises a three-phase wiring terminal 1, a plurality of fling-cut switch modules 2, a plurality of three-phase co-compensation modules 3 and a plurality of three-phase sub-compensation modules 4. The three-phase terminals 1 are for connection to an external three-phase power supply, and are A, B, C phases and U, V, W three phases. The switching switch module 2 is an electronic switch, and comprises a knife switch, a resistor, an inductor L1-3, reliable silicon devices GA, GB, GC and the like. The three-phase co-compensation module 3 or the three-phase sub-compensation module 4 is composed of three capacitors C1-C3, and the connection mode is a delta connection method or a star connection method.

On the basis of the operation structure, the unique improvement is that each three-phase common compensation module 3 is connected to the three-phase terminal 1 through a fling-cut switch, and each three-phase sub-compensation module 4 is connected to the three-phase terminal 1 through a fling-cut switch. With the structure, the switching switch module 2 can be controlled by an external controller, so that the purpose of improving the use convenience degree is achieved.

In addition, the scheme is improved in that a capacitor assembly 5 is included on each of the three-phase co-compensation module 3 and the three-phase sub-compensation module 4, which are described with reference to fig. 1 and 2. The capacitor assembly 5 is integrated within an explosion-proof housing 6. The explosion-proof housing 6 is made of ABS resin or engineering plastic. The bottom of the explosion-proof housing 6 is provided with an integrated conductive column 601, the conductive column 601 is communicated with the inside and the outside, and the capacitor assembly 5 is conductively connected with the conductive column 601 in the explosion-proof housing 6. The explosion-proof shell 6 is provided with a temperature sensor 7, a liquid level sensor 8 and insulating liquid 9, the capacitor assembly 5 is immersed in the insulating liquid 9, the liquid level sensor 8 is installed on the side wall of the explosion-proof shell 6 and used for detecting the liquid level change of the insulating liquid 9, and the temperature sensor 7 is installed outside the explosion-proof shell 6 and used for detecting the environment temperature of the environment explosion-proof shell 6. According to the scheme, the temperature sensor 7 and the liquid level sensor 8 are connected with the intelligent safety module 10, the intelligent safety module 10 judges the safety level according to the temperature signal and the liquid level signal, and controls the switching switch module 2 to perform protection action.

As further shown in fig. 3, the smart security module 10 includes a temperature determination module 101, a liquid level determination module 102, an and gate 103, an or gate 104, a selection switch 105, and an alarm circuit 106. The temperature sensor 7 is connected with the temperature judging module 101, the liquid level sensor 8 is connected with the liquid level judging module 102, the output ends of the temperature judging module 101 and the liquid level judging module 102 are connected with the AND gate 103 or the OR gate 104 through the selection switch 105, and the output ends of the AND gate 103 and the OR gate 104 are connected with the warning circuit 106.

The temperature judging module 101 and the liquid level judging module 102 have the same circuit structure. Therefore, the temperature determination module 101 is used for illustration, and the liquid level determination module 102 is not described in detail. The temperature determination module 101 has a comparator LM1, a resistor R1, a resistor R3 and a potentiometer Rp1, which are connected in the connection manner shown in fig. 3, wherein a signal end of the temperature sensor 7 is connected to one end of the resistor R1 and inputs a temperature signal to a non-inverting end of the comparator LM1, a voltage Vcc is connected to one end of the resistor R3, and the other end of the resistor R3 is grounded through the potentiometer Rp1, wherein an adjusting end of the potentiometer Rp1 is connected to an inverting end of the comparator LM1, and when the temperature determination module operates, the potentiometer Rp1 outputs a set threshold signal Vref1, and when the temperature is higher than the threshold, the comparator LM1 outputs a high-level signal. Similarly, when the liquid level is higher than the set value, the liquid level determining module 102 outputs a high level signal. The selection switch 105 is a dial switch, which can be controlled by the user.

As for the warning circuit 106, as shown in fig. 4, the warning circuit 106 includes a transistor Q1, a warning light LED, a relay, and a buzzer LB. The coil of the relay is connected with the collector of a triode Q1, the base of a triode Q1 is used for connecting the output ends of an AND gate 103 and an OR gate 104, the emitter of a triode Q1 is grounded, and the prompting lamp and the buzzer are connected with the coil of the relay in parallel. As shown in fig. 4 and fig. 1, the relay includes a relay coil 201 and a normally closed switch 202, and the normally closed switch 202 is connected to a bus line on the three-phase terminal 1.

In addition, the liquid level sensor 8 may be a common liquid level sensor 8 on the market, for example, a drop-in liquid level transmitter using Nanjing Aier sensing, and the liquid level sensor 8 of this product needs to be installed in a built-in manner.

In this embodiment, referring to fig. 2, the liquid level sensor 8 includes a magnet floating ball 801, and a hall sensor module 802 fixed on the outer wall of the explosion-proof housing 6 for sensing the height of the magnet floating ball 801, a limit groove 803 is provided on the inner wall of the explosion-proof housing 6, the magnet floating ball 801 is installed in the limit groove 803 and floats up and down, and the hall sensor module 802 is close to the magnet floating ball 801 for sensing the magnetic field. The position of the magnet is sensed by a Hall sensor so as to determine the height of the liquid level. Through the structure of this scheme, can realize the external installation that the liquid level was surveyed to be convenient for the maintenance and the maintenance of device.

By integrating the structure of the scheme, the structural design of the scheme is that the working process is more reliable and safer.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims (5)

1. The utility model provides an integrated power capacitance compensation arrangement of large capacity intelligence, includes three-phase wiring end (1), a plurality of fling-cut switch module (2), a plurality of three-phases mends module (3) altogether to a plurality of three-phases divides mends module (4), characterized by: each three-phase common compensation module (3) is connected to the three-phase terminal (1) through a fling-cut switch, each three-phase sub-compensation module (4) is connected to the three-phase terminal (1) through a fling-cut switch, the three-phase co-compensation module (3) and the three-phase sub-compensation module (4) both comprise capacitor components (5), the capacitor assembly (5) is integrated in an explosion-proof shell (6), a temperature sensor (7), a liquid level sensor (8) and insulating liquid (9) are arranged on the explosion-proof shell (6), the capacitor assembly (5) is immersed in insulating liquid (9), the liquid level sensor (8) is mounted on the side wall of the explosion-proof housing (6) for detecting the liquid level change of the insulating liquid (9), the temperature sensor (7) is arranged outside the explosion-proof shell (6) and is used for detecting the ambient temperature of the environment explosion-proof shell (6);

the intelligent safety protection device is characterized in that the temperature sensor (7) and the liquid level sensor (8) are connected with an intelligent safety module (10), the intelligent safety module (10) judges the safety level according to the temperature signal and the liquid level signal, and controls the switching switch module (2) to perform protection action.

2. The large capacity intelligent integrated power capacitance compensation device according to claim 1, wherein: the intelligent safety module (10) comprises a temperature judgment module (101), a liquid level judgment module (102), an AND gate circuit (103), an OR gate circuit (104), a selection switch (105) and a warning circuit (106), wherein the temperature sensor (7) is connected with the temperature judgment module (101), the liquid level sensor (8) is connected with the liquid level judgment module (102), the output ends of the temperature judgment module (101) and the liquid level judgment module (102) are connected with the AND gate circuit (103) or the OR gate circuit (104) through the selection switch (105), and the output ends of the AND gate circuit (103) and the OR gate circuit (104) are connected with the warning circuit (106).

3. The large capacity intelligent integrated power capacitance compensation device according to claim 2, wherein: the warning circuit (106) comprises a triode Q1, a warning light, a relay and a buzzer, wherein a coil of the relay is connected with a collector of the triode Q1, a base electrode of the triode Q1 is used for being connected with output ends of an AND gate circuit (103) and an OR gate circuit (104), an emitting electrode of the triode Q1 is grounded, and the warning light and the buzzer are connected to the coil of the relay in parallel.

4. The large capacity intelligent integrated power capacitance compensation device according to claim 3, wherein: the relay comprises a relay coil (201) and a normally closed switch (202), wherein the normally closed switch (202) is connected to a main circuit on the three-phase terminal (1).

5. The large capacity intelligent integrated power capacitance compensation device according to claim 1, wherein: liquid level sensor (8) include magnet floater (801), fix and be used for responding to hall sensor module (802) of magnet floater (801) height at explosion-proof housing (6) outer wall, be provided with spacing groove (803) on the inner wall of explosion-proof housing (6), magnet floater (801) is installed and is floated from top to bottom in spacing groove (803), and hall sensor module (802) are pressed close to magnet floater (801) are used for induction magnetic field.

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