CN210669141U - Skid-mounted distribution equipment - Google Patents
Skid-mounted distribution equipment Download PDFInfo
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- CN210669141U CN210669141U CN201921415935.0U CN201921415935U CN210669141U CN 210669141 U CN210669141 U CN 210669141U CN 201921415935 U CN201921415935 U CN 201921415935U CN 210669141 U CN210669141 U CN 210669141U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The utility model relates to the technical field of power distribution, in particular to skid-mounted power distribution equipment, which comprises a skid-mounted box body, wherein the skid-mounted box body comprises a high-voltage chamber, a low-voltage chamber and a transformer chamber, the high-voltage chamber is connected with the transformer chamber through a cable, and the transformer chamber is connected with the low-voltage chamber through a third bus bar; the high-voltage chamber comprises a first wire inlet cabinet, a metering cabinet and a first wire outlet cabinet, the first wire inlet cabinet and the metering cabinet are connected through a first bus bar, and the metering cabinet and the first wire outlet cabinet are connected through a second bus bar; the low-voltage chamber comprises a second incoming line cabinet, an electric energy quality optimization device and a second outgoing line cabinet, the second incoming line cabinet is connected with the electric energy quality optimization device through a fourth busbar, the second incoming line cabinet is connected with the second outgoing line cabinet through a fifth busbar, and the electric energy quality optimization device comprises a power compensation cabinet. Through the arrangement, the power distribution equipment with the reactive compensation and harmonic suppression functions is very stable, and the problems of quick change of direct current, voltage flicker and low power factor can be solved.
Description
Technical Field
The utility model relates to a distribution technical field especially relates to a sled dress formula distribution equipment.
Background
At present, diesel oil is generally adopted in an oil field drilling machine power distribution system for power generation, and the drilling machine is a large energy consumption household in the petroleum industry. National drilling rigs consume over a million tons of diesel fuel each year and emit millions of tons of carbon dioxide. Exhaust pollution and noise cause public nuisance, the pollution to the environment is more and more serious, and the method is not suitable for the energy-saving and environment-friendly requirements of China at present. Meanwhile, the diesel generator is complex in structure, and the requirement on the machining precision of parts is high. The required technology is complex, the number of devices is large, the workload is large, the consequences of improper operation are serious, the maintenance is difficult when a fault occurs, and the period is long.
The current of the direct current drilling machine changes rapidly, the voltage flicker, the power factor is low, therefore it is required that the power supply system supplies power very stably, and there is a power distribution device in the prior art to arrange the power compensation device in the high-voltage chamber for power compensation, but the voltage transmitted will become unstable again after passing through the circuit of the variable voltage chamber and the low-voltage chamber.
In the prior art, reactive compensation is carried out by adopting an FC passive filter compensation and SVG active dynamic filter compensation parallel hybrid device, but the stability is poor and the compensation is slow.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the invention provides skid-mounted power distribution equipment which comprises a skid-mounted box body, wherein the skid-mounted box body internally comprises a high-voltage chamber, a low-voltage chamber and a transformer chamber, the high-voltage chamber is connected with the transformer chamber through a cable, and the transformer chamber is connected with the low-voltage chamber through a third busbar; the high-voltage chamber comprises a first wire inlet cabinet, a metering cabinet and a first wire outlet cabinet, the first wire inlet cabinet and the metering cabinet are connected through a first bus bar, and the metering cabinet and the first wire outlet cabinet are connected through a second bus bar; the low-voltage chamber comprises a second incoming line cabinet, an electric energy quality optimization device and a second outgoing line cabinet, the second incoming line cabinet is connected with the electric energy quality optimization device through a fourth busbar, the second incoming line cabinet is connected with the second outgoing line cabinet through a fifth busbar, and the electric energy quality optimization device comprises a power compensation cabinet.
Further, skid-mounted box body external rain-proof wiring terminal, rain-proof wiring terminal one end is passed through the cable and is connected with the consumer, and the rain-proof wiring terminal other end is passed through the cable and is connected with the second cabinet of being qualified for the next round of competitions.
Further, first inlet wire cabinet includes the first inlet wire circuit of leading into sled dress formula distribution equipment with the high pressure, and the measurement cabinet is including the measurement circuit of measurement power consumption, and first outlet wire cabinet is including drawing forth the high pressure to the indoor first circuit of being qualified for the next round of competitions of transformer, wherein: the first incoming line circuit, the metering circuit and the first outgoing line circuit are connected in series through a first bus bar and a second bus bar; the second inlet wire cabinet includes and introduces the low pressure to the second inlet wire circuit in the low-voltage chamber, and power quality optimizing device includes power optimization circuit, and the second outlet wire cabinet is drawn forth the low pressure for the second circuit of being qualified for the next round of competitions of consumer, wherein: the second outgoing line circuit is connected with the electric energy optimization circuit in parallel and then connected with the second incoming line circuit in series.
Further, the first incoming line circuit comprises a load switch, a first capacitor, a first charged display and a first lightning arrester; the rear end of the load switch is connected with a first incoming line terminal of the first busbar, and the front end of the load switch is respectively connected with one end of the first capacitor and one end of the first lightning arrester; the other end of the first capacitor is connected with the first charged display, and the other end of the first charged display is grounded; the other end of the first arrester is grounded.
Further, the metering circuit comprises a first current transformer, a first voltage transformer and a first fuse; one end of the first current transformer is connected with a first wire outlet terminal of the first busbar, the other end of the first current transformer is connected with a second wire inlet terminal of the second busbar and one end of the first fuse respectively, and the other end of the first fuse is connected with the first voltage transformer.
Further, the first outlet circuit comprises a grounding switch, a first circuit breaker, a second current transformer, a second capacitor and a second electrified display; one end of the first breaker is connected with a second wire outlet terminal of the second busbar, and the other end of the first breaker is connected with one end of the second current transformer; the other end of the second current transformer is respectively connected with one end of the grounding switch and one end of the second capacitor; the other end of the second capacitor is connected with one end of a second electrified display, the other end of the second electrified display is grounded, and the other end of the second current transformer is further connected with the transformer chamber through a cable.
Furthermore, the transformer chamber comprises a first transformer, one end of the first transformer is connected with the second current transformer through a cable, and the other end of the first transformer is connected with a third incoming terminal of the third busbar.
Further, the second incoming line circuit comprises a third current transformer, a second circuit breaker, a second transformer, a third circuit breaker, a fourth current transformer, a fourth circuit breaker, a fifth circuit breaker, a third transformer, a sixth circuit breaker, a fifth current transformer and a distribution box; one end of a third current transformer is connected with a third wire outlet terminal of the third busbar, and the other end of the third current transformer is respectively connected with one end of a second circuit breaker, one end of a fourth circuit breaker and one end of a fifth circuit breaker; one end of the second transformer is connected with the other end of the second circuit breaker, and the other end of the second transformer is connected with the third circuit breaker; one end of a fourth current transformer is connected with the other end of the fourth circuit breaker, the other end of the fourth current transformer is connected with a fourth incoming line terminal of the fourth busbar, and the other end of the fourth current transformer is also connected with a fifth incoming line terminal of the fifth busbar; one end of a third transformer is connected with the other end of the fifth circuit breaker, the other end of the third transformer is connected with one end of a sixth circuit breaker, the other end of the sixth circuit breaker is connected with one end of a fifth current transformer, and the other end of the fifth current transformer is connected with a distribution box.
Further, the electric energy optimization circuit comprises a control circuit and a plurality of reactive compensation circuits which are connected in parallel with each other and are connected with the control circuit in series, wherein the control circuit comprises a sixth current transformer, a master controller, a second voltage transformer, a second fuse, a second lightning arrester, a seventh circuit breaker, a first resistor and a third capacitor; a first end of a sixth current transformer is connected with a fourth wire outlet terminal of the fourth busbar, and a second end of the sixth current transformer is respectively connected with one end of a second fuse, one end of a seventh circuit breaker and the reactive power compensation circuit; the other end of the second fuse is respectively connected with one end of a second lightning arrester and one end of a second voltage transformer, and the other end of the second lightning arrester is grounded; the other end of the seventh circuit breaker is connected with one end of a first resistor, the other end of the first resistor is connected with one end of a third capacitor, and the other end of the third capacitor is grounded; the main controller is respectively connected with a tap of the sixth current transformer and the other end of the second voltage transformer, and the main controller is also in communication connection with the reactive power compensation circuit.
Further, the reactive compensation circuit comprises an eighth circuit breaker, an inductor, a power unit circuit, a contactor and a second resistor, wherein the eighth circuit breaker, the inductor and the power unit circuit are connected in series, one end of the eighth circuit breaker is connected with the second end of the sixth current transformer, the contactor is connected with the second resistor in series, and the contactor is connected with the eighth circuit breaker in parallel after being connected with the second resistor in series.
The utility model discloses a sled dress formula distribution equipment has following beneficial effect at least:
1. and the power supply is stable, and before the electric energy is output from the low-voltage chamber, the electric energy quality optimization device realizes real-time tracking and compensation of output voltage and current, so that the power supply stability is ensured.
2. The power distribution device has the characteristics of convenient movement and good sealing effect, the power distribution device integrally adopts a skid-mounted mode, and practical outdoor power equipment is continuously moved; meanwhile, the sealing effect is good, and the power supply can still be ensured not to be influenced under the severe outdoor weather conditions.
3. Factor of safety is high, and distribution circuit is equipped with a plurality of fuses, circuit breaker, can realize multiple protect function to make things convenient for staff's testing and maintenance.
Drawings
Fig. 1 is a structural diagram of a skid-mounted power distribution apparatus according to an embodiment of the present invention;
fig. 2 is a circuit diagram of the inside of a high-voltage chamber according to an embodiment of the present invention;
fig. 3 is a circuit diagram of an indoor transformer according to an embodiment of the present invention;
fig. 4 is a second incoming line circuit diagram according to an embodiment of the present invention;
fig. 5 is a circuit diagram of an electric energy optimization circuit according to an embodiment of the present invention;
fig. 6 is a second outlet circuit diagram according to an embodiment of the present invention;
wherein: 1-skid box body, 2-high voltage chamber, 201-first incoming line cabinet, 202-metering cabinet, 203-first outgoing line cabinet, 3-transformer chamber, 4-low voltage chamber, 401-second incoming line cabinet, 402-electric energy quality optimization device, 403-second outgoing line cabinet, 5-first incoming line circuit, 6-metering circuit, 7-first outgoing line circuit, 8-first busbar, 801-first incoming line terminal, 802-first outgoing line terminal, 9-second busbar, 901-second incoming line terminal, 902-second outgoing line terminal, 10-third busbar, 1001-third incoming line terminal, 1002-third outgoing line terminal, 11-second incoming line circuit, 12-distribution box, 13-control circuit, 14-reactive compensation circuit, 15-power unit circuit, 16-fourth busbar, 1601-fourth incoming line terminal, 1602-fourth outgoing line terminal, 17-fifth busbar, 1701-fifth incoming line terminal and 1702-fifth outgoing line terminal.
Detailed Description
For a clearer explanation of the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
In an embodiment, as shown in fig. 1, for the utility model provides a structure diagram of a skid-mounted power distribution equipment, the skid-mounted power distribution equipment includes skid-mounted box 1, skid-mounted box 1 is inside including high-voltage chamber 2, transformer room 3, low-voltage chamber 4, high-voltage chamber 2, transformer room 3 and low-voltage chamber 4 are independent to become one, be convenient for the mill to preassemble, connect through the cable between high-voltage chamber 2 and transformer room 3, connect through third bus 10 between transformer room 3 and the low-voltage chamber 4, include first incoming line cabinet 201, measurement cabinet 202 and first outgoing line cabinet 203 in the high-voltage chamber 2, connect through first bus 8 between first incoming line cabinet 201 and the measurement cabinet 202, connect through second bus 9 between measurement cabinet 202 and the first outgoing line cabinet 203; the low-voltage chamber 4 comprises a second incoming line cabinet 401, an electric energy quality optimization device 402 and a second outgoing line cabinet 403, the second incoming line cabinet 401 is connected with the electric energy quality optimization device 402 through a fourth busbar 16, the second incoming line cabinet 401 is connected with the second outgoing line cabinet 403 through a fifth busbar 17, the electric energy quality optimization device 402 comprises a power compensation cabinet to realize reactive compensation of electric energy output from the second incoming line cabinet 401 to the second outgoing line cabinet 402, and stable power supply is guaranteed.
The power compensation cabinet realizes the reactive compensation function, and the electric energy in the low-voltage chamber 4 is output to the consumer through the second outgoing line cabinet 403 after being subjected to reactive compensation, and the number of the second outgoing line cabinet 403 can be multiple, so that the plurality of consumers can be supplied with power simultaneously. The utility model discloses an in the embodiment, adopt sled dress formula distribution equipment to replace traditional diesel generator to supply power for consumer especially the rig, compare in diesel generator and say the utility model provides a sled dress formula distribution equipment is more energy-conserving, and reduce cost reduces carbon and discharges, and the noise that produces simultaneously is littleer. The power distribution equipment adopts the sled dress formula, and adaptable consumer especially the characteristics that the rig constantly removed, after the consumer operation is accomplished, can use the crane to move the whole next department of power distribution equipment, convenient and fast. And simultaneously, the embodiment of the utility model provides a sled dress formula distribution equipment direct access 10KV commercial power is exported for consumer after carrying out step-down processing, reactive compensation to 10KV commercial power and handling, consequently compares in diesel engine electricity generation by oneself, and the power supply is more stable, improves the reliability of power supply operation. Optionally, the skid-mounted power distribution equipment is wholly of a full-sealing type, the skid-mounted power distribution equipment of the full-sealing type is good in sealing performance, has the functions of preventing rain, corrosion and wind and sand and preventing small animals from entering, and is suitable for supplying power to outdoor power utilization equipment. Optionally, sled dress formula distribution equipment's sled dress box 1 can use the stainless steel metal plate that accords with national standard to make, and corrosion resistant plate's rust-resistant function is good, makes distribution equipment durable more, and sled dress box 1 outside can increase insulating coating in order to solve the not good shortcoming of stainless steel plate insulating nature, and of course, sled dress box 1 can also adopt the cold-rolled steel sheet to make, and the quality is reliable and with low costs.
Further, in another embodiment of the present invention, the air conditioner may be disposed in the high-pressure chamber 2 and the low-pressure chamber 4, so as to ensure that the temperature inside the skid-mounted box 1 is in a suitable temperature condition for working, so that the skid-mounted power distribution equipment can also stably operate in an extreme environment such as high temperature or extreme cold, specifically, the interlayer may be disposed at the top of the low-pressure chamber 4, and the air conditioner supplies air to the interlayer, thereby absorbing the heat generated during the working process of the second incoming cabinet 401, the second outgoing cabinet 403 and the power quality optimization device 402 at the bottom of the low-pressure chamber 4.
Further, sled dress box 1 still includes external rain-proof binding post, and rain-proof binding post one end is passed through the cable and is connected with the consumer, and the rain-proof binding post other end passes through the cable and is connected with second outlet wire cabinet 403 to draw the low pressure in the low-voltage chamber 4 for the consumer, for the consumer supplies power.
Further, in another embodiment of the present invention, the first incoming line cabinet 201 includes a first incoming line circuit 5 for introducing high voltage into the skid-mounted power distribution equipment, the metering cabinet 202 includes a metering circuit 6 for metering power consumption, the first outgoing line cabinet 203 includes a first outgoing line circuit 7 for introducing high voltage into the transformer room 3, and the first incoming line circuit 5, the metering circuit 6, and the first outgoing line circuit 7 are connected in series through a first bus bar 8 and a second bus bar 9; the second incoming cabinet 401 includes a second incoming circuit 11 for introducing low voltage into the low voltage chamber 4, the power quality optimization apparatus 402 includes a power optimization circuit, and the second outgoing cabinet 403 includes a second outgoing circuit for leading out low voltage to the electric device, wherein: the second outgoing line circuit is connected in parallel with the electric energy optimization circuit and then connected in series with the second incoming line circuit 11. The first wire inlet circuit 5, the metering circuit 6 and the first wire outlet circuit 7 jointly form a high-voltage distribution system of the skid-mounted power distribution equipment, and the second wire inlet circuit 11, the electric energy optimization circuit and the second wire outlet circuit jointly form a low-voltage distribution system of the skid-mounted power distribution equipment.
Further, in another embodiment of the present invention, as shown in fig. 2, the first incoming line circuit 5 includes a load switch QB, a first capacitor C1, a first charged display M1, and a first lightning arrester F1, the rear end of the load switch QB is connected to the first incoming line terminal 801 of the first busbar 8, after the load switch QB is closed, the commercial power 10KV is high-voltage inserted into the first incoming line circuit 5 and is input to the metering circuit 6 through the first incoming line terminal 801 of the first busbar 8, one end of the first capacitor C1 is connected to the front end of the load switch QB, the other end of the first capacitor C1 is connected to one end of the first charged display M1, the other end of the first charged display M1 is grounded, one end of the first lightning arrester F1 is also connected to the front end of the load switch QB, and the other end of the first lightning arrester F1 is grounded. When the inlet wire circuit inserts commercial power 10KV high pressure, the display window of first electrified display M1 sends and flashes, it is electrified to warn staff high-voltage equipment, prevent electric maloperation, be equipped with first arrester F1 in first inlet wire circuit 5, can effectively prevent the thunder and lightning overvoltage, the impact of operation overvoltage etc. and the condition of damaging each electrical equipment, be equipped with load switch QB in first inlet wire circuit 5, separate the equipment that will overhaul when carrying out the circuit maintenance or circuit and power with an obvious disconnection point, in order to guarantee the safety of maintainer and equipment. Through the above arrangement, multiple safety protections are provided for equipment and workers. When short-circuit fault occurs in the electrified operation of the electric equipment, the load switch QB of the first incoming line circuit 5 can be automatically cut off, so that the power failure of a high-voltage power grid can not be caused, and the normal operation of other electric equipment can be guaranteed.
Further, in another embodiment of the present invention, as shown in fig. 2, the metering circuit 6 includes a first current transformer CT1, a first voltage transformer PT1 and a first fuse FU1, one end of the first current transformer CT1 is connected to the first outgoing line terminal 802 of the first busbar 8, the other end of the first current transformer CT1 is connected to the second incoming line terminal 901 of the second busbar 9 and one end of the first fuse FUI, and the other end of the first fuse 1 is connected to the first voltage transformer FU 1. When the first potential transformer PT1 fails, the current passing through the first fuse FU1 increases, and the circuit at the first fuse FU1 is broken, so that the first potential transformer PT1 is disconnected from the metering circuit 6, thereby protecting both the first potential transformer PT1 and the metering circuit 6. Further, can increase UPS emergency power source in measurement cabinet 202, when the circuit broke down, can carry out the time delay power supply for sled dress formula distribution equipment, guarantee sled dress formula distribution equipment's normal operating.
Further, in another embodiment of the present invention, as shown in fig. 2, the first outlet circuit 7 includes a ground switch K, a first breaker QF1, a second current transformer CT2, a second capacitor C2, and a second charged display M2, one end of the first breaker QF1 is connected to the second outlet terminal 902 of the second busbar 9, the other end of the first breaker QF1 is connected to one end of the second current transformer CT2, the other end of the second current transformer CT2 is connected to the ground switch K, the other end of the second current transformer CT2 is further connected to one end of the second capacitor C2, the other end of the second capacitor C2 is connected to the second charged display M2, and the second charged display M2 is grounded. The grounding switch K and the first breaker QF1 are synchronous switches. The other end of the second current transformer CT2 is also connected to the circuit in the transformer room 3 by a cable.
Further, in another embodiment of the present invention, as shown in fig. 3, the transformer room 3 includes a first transformer TC1, the high-voltage side of the first transformer TC1 is connected to the second current transformer CT2 through a cable, the low-voltage side of the first transformer TC1 is connected to the third incoming terminal 1001 of the third busbar 10, and by the above arrangement, the first transformer TC1 performs a voltage reduction process on the high voltage introduced from the high-voltage room 2 and outputs the processed low voltage to the low-voltage room 4, wherein the first transformer TC1 is a dry type transformer, and the dry type transformer outputs the low voltage of which the high voltage of the 10KV commercial power is reduced to 600V to the low-voltage distribution system composed of the second incoming circuit 11, the power optimization circuit and the second outgoing circuit in the low-voltage room 4.
Further, in another embodiment of the present invention, as shown in fig. 4, the second incoming circuit 11 includes a third current transformer CT3, a second breaker QF2, a second transformer TC2, a third breaker QF3, a fourth current transformer CT4, a fourth breaker QF4, a fifth breaker QF5, a third transformer TC3, a sixth breaker QF6, a fifth current transformer CT5, and the distribution box 12; one end of a third current transformer CT3 is connected with a third outlet terminal 1002 of the third busbar 10, and the other end of the third current transformer CT3 is connected with one end of a second breaker QF2, one end of a fourth breaker QF4 and one end of a fifth breaker QF5 respectively; one end of a second transformer TC2 is connected with the other end of a second breaker QF2, the other end of the second transformer TC2 is connected with a third breaker QF3, and the third breaker QF3 consists of two breakers connected in parallel; one end of a fourth current transformer CT4 is connected to the other end of the fourth circuit breaker QF4, and the other end of the fourth current transformer CT4 is connected to the fourth line terminal 1601 of the fourth busbar 16. The other end of the fourth current transformer CT4 is further connected to a fifth incoming line terminal 1701 of the fifth busbar 17; one end of a third transformer TC3 is connected with the other end of a fifth circuit breaker QF5, and the other end of the third transformer TC3 is connected with one end of a sixth circuit breaker QF 6; the other end of the sixth circuit breaker QF6 is connected to one end of a fifth current transformer CT5, and the other end of the fifth current transformer CT5 is connected to the distribution box 12. The second transformer TC2 converts 600V to 380V, and the third transformer TC3 converts 600V to 220V. 3 branches connected with third current transformer CT3 all are provided with the circuit breaker, can in time cut off the fault circuit when circuit fault appears and maintain, realize the protection to distribution circuit and maintainer.
Further, in another embodiment of the present invention, as shown in fig. 5, the electric energy optimization circuit includes a control circuit 13 and a plurality of reactive compensation circuits 14 connected in parallel to each other and connected in series with the control circuit 13, the control circuit 13 includes a sixth current transformer CT6, a master controller, a second voltage transformer PT2, a second fuse FU2, a second lightning arrester F2, a seventh breaker QF7, a first resistor R1, and a third capacitor C3; a first end of a sixth current transformer CT6 is connected with a fourth outgoing line terminal 1602 of the fourth busbar 16, a second end of a sixth current transformer CT6 is connected with one end of a second fuse FU2, the other end of the second fuse FU2 is respectively connected with one end of a second voltage transformer PT2 and one end of a second lightning arrester F2, and the other end of the second lightning arrester F2 is grounded; the second end of the sixth current transformer CT6 is further connected with one end of a seventh breaker QF7, the other end of the seventh breaker is connected with one end of a first resistor R1, the other end of the first resistor R1 is connected with one end of a third capacitor C3, and the other end of the third capacitor C3 is grounded; the second end of the sixth current transformer CT6 is also connected with a plurality of reactive power compensation circuits which are connected in parallel, the master controller is connected with a tap of the sixth current transformer CT6 for current sampling, the master controller is also connected with the other end of the second voltage transformer PT2 for voltage sampling, and the master controller is in communication connection with the reactive power compensation circuits. The main controller in the control circuit 13 samples voltage and current in real time, and calculates the component values of harmonic waves and reactive current in the compensation current by using a rapid SVG (Static Var Generator) technology, and the power unit circuit 15 comprises a direct current capacitor and an inverter bridge, wherein the inverter bridge is composed of semiconductor devices IGBT which can be turned off. In operation, the amplitude and phase of the voltage inverted from direct current to alternating current can be controlled by adjusting the switch of the IGBT device in the inverter bridge, so that the whole device is equivalent to a phase modulation power supply. Through required idle work among the detecting system, can send the idle work of the same size, opposite phase fast, realize idle balance on the spot, keep the real-time high power factor operation of system, the harmonic among the filtering power supply system for power supply system is reliable and stable, and owing to only use the SVG technique, therefore the compensation is quick, more safe and stable. Specifically, the main controller is further connected with a human-computer interface and is connected with the main control background through the human-computer interface, and workers can control the main controller through the human-computer interface and the main control background.
Further, in another embodiment of the present invention, as shown in fig. 5, the reactive power compensation circuit 14 includes an eighth breaker QF8, an inductor L, a power unit circuit 15, a contactor KM1, and a second resistor R2, the eighth breaker QF8, the inductor L, and the power unit circuit 15 are connected in series, one end of the eighth breaker QF8 is connected to the second end of the sixth current transformer CT6, and the contactor KM1 is connected in series with the second resistor R2 and then connected in parallel with the eighth breaker QF 8. The contactor KM1 and a second resistor R2 are used for protecting the reactive compensation circuit 14. The power unit circuit 15 is used for reactive compensation under the control of the main controller. The utility model discloses in with reactive compensation circuit setting in power compensation cabinet, can set up a plurality of power compensation cabinets in the low-pressure chamber, optional, the reactive compensation circuit in every power compensation cabinet can set up to 4, and 4 reactive compensation circuits are parallelly connected, through the aforesaid setting for electric energy quality optimization device 402 in the low-pressure chamber 4 can carry out reactive compensation to the electric energy of exporting a plurality of consumer simultaneously.
Further, in another embodiment of the present invention, as shown in fig. 6, the second outlet circuit includes a ninth circuit breaker QF9 and a seventh current transformer CT7, the fifth outlet terminal 1702 of the one end fifth busbar 17 of the ninth circuit breaker QF9 is connected, and the other end of the ninth circuit breaker QF9 is connected to the seventh current transformer CT 7.
When for consumer such as the rig power supply, especially when supplying power to the direct current rig, because direct current rig current change is fast, voltage flicker, power factor is very low, consequently requires power supply system's reactive compensation and harmonic to administer very stably, the utility model provides a sled dress formula distribution equipment is equipped with electric energy quality optimizing device in the low-voltage chamber, and wherein master controller carries out voltage and current sampling, calculates the harmonic of compensating current the inside and reactive current's component value, then compensates according to calculating to harmonic in the filtering system effectively solves direct current rig current change fast with stable current output for the consumer, voltage flicker, problem that power factor is low.
The circuit in the skid-mounted power distribution equipment realizes the functions of overload and undervoltage automatic power-off by arranging devices such as a circuit breaker and a fuse, and provides safety protection for the equipment.
The present invention has been further described with reference to specific embodiments, but it should be understood that the specific description herein should not be construed as limiting the spirit and scope of the present invention, and that various modifications to the above-described embodiments, which would occur to persons skilled in the art after reading this specification, are within the scope of the present invention.
Claims (10)
1. The skid-mounted power distribution equipment is characterized by comprising a skid-mounted box body, wherein the skid-mounted box body internally comprises a high-voltage chamber, a low-voltage chamber and a transformer chamber, the high-voltage chamber is connected with the transformer chamber through a cable, and the transformer chamber is connected with the low-voltage chamber through a third busbar;
the high-voltage chamber comprises a first wire inlet cabinet, a metering cabinet and a first wire outlet cabinet, the first wire inlet cabinet and the metering cabinet are connected through a first bus bar, and the metering cabinet and the first wire outlet cabinet are connected through a second bus bar;
the low-voltage chamber comprises a second incoming line cabinet, an electric energy quality optimization device and a second outgoing line cabinet, the second incoming line cabinet is connected with the electric energy quality optimization device through a fourth busbar, the second incoming line cabinet is connected with the second outgoing line cabinet through a fifth busbar, and the electric energy quality optimization device comprises a power compensation cabinet.
2. The skid-mounted power distribution equipment as claimed in claim 1, wherein a rain-proof wiring terminal is arranged outside the skid-mounted box body, one end of the rain-proof wiring terminal is connected with electric equipment through a cable, and the other end of the rain-proof wiring terminal is connected with the second outlet cabinet through a cable.
3. The skid-mounted power distribution apparatus of claim 2, wherein the first inlet cabinet comprises a first inlet circuit that introduces high voltage into the skid-mounted power distribution apparatus, the metering cabinet comprises a metering circuit that meters power usage, and the first outlet cabinet comprises a first outlet circuit that directs high voltage to the transformer room, wherein: the first wire inlet circuit, the metering circuit and the first wire outlet circuit are connected in series through the first busbar and the second busbar;
the second incoming line cabinet comprises a second incoming line circuit for introducing low voltage into the low-voltage chamber, the electric energy quality optimization device comprises an electric energy optimization circuit, the second outgoing line cabinet comprises a second outgoing line circuit for leading the low voltage out of the electric equipment, and the second outgoing line cabinet comprises a first outgoing line circuit for leading the low voltage out of the electric equipment, wherein: and the second outlet circuit is connected with the electric energy optimization circuit in parallel and then connected with the second inlet circuit in series.
4. The skid-mounted power distribution apparatus of claim 3, wherein the first incoming electrical circuit comprises a load switch, a first capacitor, a first live display, a first lightning arrestor;
the rear end of the load switch is connected with a first incoming line terminal of the first busbar, and the front end of the load switch is respectively connected with one end of the first capacitor and one end of the first lightning arrester; the other end of the first capacitor is connected with the first charged display, and the other end of the first charged display is grounded; the other end of the first arrester is grounded.
5. The skid-mounted power distribution apparatus of claim 4, wherein the metering circuit comprises a first current transformer, a first fuse, a first voltage transformer, wherein:
one end of the first current transformer is connected with a first wire outlet terminal of the first busbar, and the other end of the first current transformer is respectively connected with a second wire inlet terminal of the second busbar and one end of the first fuse; the other end of the first fuse is connected with the first voltage transformer.
6. The crowbar power distribution apparatus of claim 5, wherein the first outlet circuit includes a ground switch, a first circuit breaker, a second current transformer, a second capacitor, a second live display; wherein:
one end of the first circuit breaker is connected with a second wire outlet terminal of the second busbar, and the other end of the first circuit breaker is connected with one end of the second current transformer; the other end of the second current transformer is respectively connected with one end of the grounding switch and one end of the second capacitor; the other end of the second capacitor is connected with one end of the second electrified display, and the other end of the second electrified display is grounded; the other end of the second current transformer is also connected with the transformer chamber through a cable.
7. The skid-mounted power distribution apparatus of claim 6, wherein the transformer compartment comprises a first transformer, one end of the first transformer is connected to the second current transformer through a cable, and the other end of the first transformer is connected to a third input terminal of the third busbar.
8. The skid-mounted power distribution apparatus of claim 7, wherein the second incoming circuit comprises a third current transformer, a second circuit breaker, a second transformer, a third circuit breaker, a fourth current transformer, a fourth circuit breaker, a fifth circuit breaker, a third transformer, a sixth circuit breaker, a fifth current transformer, and a distribution box, wherein:
one end of the third current transformer is connected with a third wire outlet terminal of the third busbar, and the other end of the third current transformer is respectively connected with one end of the second circuit breaker, one end of the fourth circuit breaker and one end of the fifth circuit breaker;
one end of the second transformer is connected with the other end of the second circuit breaker, and the other end of the second transformer is connected with the third circuit breaker;
one end of the fourth current transformer is connected with the other end of the fourth circuit breaker, the other end of the fourth current transformer is connected with a fourth incoming line terminal of the fourth busbar, and the other end of the fourth current transformer is also connected with a fifth incoming line terminal of the fifth busbar;
one end of the third transformer is connected with the other end of the fifth circuit breaker, the other end of the third transformer is connected with one end of the sixth circuit breaker, the other end of the sixth circuit breaker is connected with one end of the fifth current transformer, and the other end of the fifth current transformer is connected with the distribution box.
9. The skid-mounted power distribution apparatus of claim 8, wherein the power optimization circuit comprises a control circuit and a plurality of reactive compensation circuits in parallel with each other in series with the control circuit, wherein:
the control circuit comprises a sixth current transformer, a master controller, a second voltage transformer, a second fuse, a second lightning arrester, a seventh circuit breaker, a first resistor and a third capacitor;
the first end of the sixth current transformer is connected with a fourth wire outlet terminal of the fourth busbar, and the second end of the sixth current transformer is respectively connected with one end of the second fuse, one end of the seventh circuit breaker and the plurality of reactive compensation circuits which are connected in parallel; the other end of the second fuse is respectively connected with one end of the second lightning arrester and one end of the second voltage transformer, and the other end of the second lightning arrester is grounded; the other end of the seventh circuit breaker is connected with one end of the first resistor, the other end of the first resistor is connected with one end of the third capacitor, and the other end of the third capacitor is grounded;
the main controller is respectively connected with a tap of the sixth current transformer and the other end of the second voltage transformer, and the main controller is also in communication connection with the reactive compensation circuit.
10. The skid-mounted power distribution apparatus of claim 9, wherein the reactive compensation circuit comprises an eighth circuit breaker, an inductor, a power cell circuit, a contactor, and a second resistor, the eighth circuit breaker, the inductor, and the power cell circuit being connected in series, the eighth circuit breaker having one end connected to the sixth current transformer second end, the contactor being connected in series with the second resistor and then connected in parallel with the eighth circuit breaker.
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| CN201921415935.0U CN210669141U (en) | 2019-08-29 | 2019-08-29 | Skid-mounted distribution equipment |
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| CN201921415935.0U CN210669141U (en) | 2019-08-29 | 2019-08-29 | Skid-mounted distribution equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594917A (en) * | 2021-04-23 | 2021-11-02 | 胜利油田恒源电气有限责任公司 | Integrated skid-mounted device for electrical equipment of oil well site |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594917A (en) * | 2021-04-23 | 2021-11-02 | 胜利油田恒源电气有限责任公司 | Integrated skid-mounted device for electrical equipment of oil well site |
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Effective date of registration: 20201020 Address after: No.10 Guoan Road, comprehensive bonded zone, Caofeidian Industrial Zone, Tangshan City, Hebei Province Patentee after: TANGSHAN JIDONG PETROLEUM MACHINERY Co.,Ltd. Patentee after: PetroChina Company Limited Address before: 063200 No. 261, New Town Street, Tang Hai Town, Caofeidian District, Tangshan City, Hebei Patentee before: TANGSHAN JIDONG PETROLEUM MACHINERY Co.,Ltd. |