CN106325060B - High-voltage motor closing control method and system - Google Patents
High-voltage motor closing control method and system Download PDFInfo
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- CN106325060B CN106325060B CN201610962102.0A CN201610962102A CN106325060B CN 106325060 B CN106325060 B CN 106325060B CN 201610962102 A CN201610962102 A CN 201610962102A CN 106325060 B CN106325060 B CN 106325060B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B7/00—Arrangements for obtaining smooth engagement or disengagement of automatic control
- G05B7/02—Arrangements for obtaining smooth engagement or disengagement of automatic control electric
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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Abstract
The invention discloses a high-voltage motor switching-on control method and a system, wherein a switching-on loop in a high-voltage power distribution cabinet is divided into a working position switching-on loop and a test position switching-on loop which are connected in parallel, and the working position switching-on loop is connected with a switching-on interlocking joint of soft start control equipment and a switching-on loop of a field operation box; when the high-voltage equipment is subjected to test inspection and maintenance, the operation of the high-voltage power distribution cabinet is only needed, the state limitation of the soft start control equipment is avoided, the equipment is simplified, and the efficiency is improved.
Description
Technical Field
The invention relates to the technical field of high-voltage motors.
Background
At present, high-power high-voltage motors are powered by a high-voltage power distribution cabinet, and the starting load is reduced by various soft-start control devices to complete the starting process. The "ready and closing allowable" interlocking contact of the soft start control device is connected in series in a closing loop of the high-voltage power distribution cabinet, and is limited by the state of the "ready and closing allowable" interlocking contact of the soft start control device no matter the field operation box or the panel of the high-voltage power distribution cabinet performs closing operation. In practical use, a plurality of defects are found:
1) Wasting money. The field operation box is generally installed near the soft start control equipment, often has a distance of hundreds of meters from the high-voltage power distribution cabinet, and cabling is needed to transmit signals between the field operation box and the high-voltage power distribution cabinet and between the soft start control equipment and the high-voltage power distribution cabinet.
2) The failure point is increased. Long cabling distances, if damaged, can affect normal start-up and shut-down operations and even cause abnormal shut-down.
3) The difficulty and the workload of fault investigation are increased, and the fault processing time is prolonged. Once a fault occurs, multiple departments are required to cooperatively troubleshoot the fault, and troubleshooting personnel are required to run, communicate and check the fault between a field operation box, soft start control equipment and a high-voltage power distribution cabinet.
4) The normal maintenance work of the high-voltage motor is limited. When a high-voltage maintainer is in normal test and inspection, the operator of the soft start control equipment needs to be contacted in advance to put the soft start control equipment in a state of 'ready and allowable closing', so that the maintenance time is prolonged.
5) Waste energy. When the high-voltage motor is tested, inspected and maintained, the soft start control equipment needs to be in a state of being ready and allowing to be switched on, and the detection, cooling and control equipment in the soft start control equipment is in a working state, so that electric energy is consumed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a high-voltage motor closing control method and a system, which reduce the cable laying length, prevent the high-voltage motor from being limited by the state of soft start control equipment during test inspection and maintenance, simplify the equipment, and are safe, convenient to operate and improve the efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
a high-voltage motor closing control method comprises the following steps: dividing a switching-on loop in a high-voltage power distribution cabinet into a working position switching-on loop and a test position switching-on loop which are connected in parallel, wherein the working position switching-on loop is connected with a switching-on interlocking joint of soft start control equipment and a switching-on loop of a field operation box; when the high-voltage motor is in a working state, the switching-on and switching-off are controlled by the working position switching-on loop, the switching-on interlocking contact of the soft start control device and the switching-on loop of the field operation box together, and the test position switching-on loop is disconnected; when the high-voltage motor is in a test state, the test position switching-on loop controls switching-off and switching-on, and the working position switching-on loop is disconnected.
The high-voltage motor switching-on control system comprises a high-voltage power distribution cabinet, a field operation box and soft start control equipment, wherein a working position switching-on loop and a test position switching-on loop are arranged in the high-voltage power distribution cabinet, and are connected with an operating power supply in parallel through a selection switch, so that the working position switching-on loop and the test position switching-on loop can be switched on at different times; the switching-on interlocking contact of the soft start control device is connected in series to a switching-on loop of the field operation box; and the switching-on loop of the field operation box is connected in series with the switching-on loop of the working position.
Preferably, a working position signal contact and a test position signal contact of a circuit breaker in the high-voltage power distribution cabinet are respectively connected in series in the working position closing loop and the test position closing loop.
Preferably, the soft start control device is arranged in the field operation box, and a closing interlocking contact of the soft start control device is connected in series into a closing loop of the field operation box through a control cable.
Preferably, the selection switch is a trolley switch.
Preferably, a switching-on loop of the field operation box is connected with a switching-on button a in series to control switching-on and switching-off.
Preferably, a test position switching-on loop of the high-voltage power distribution cabinet is connected with a switching-on button b in series to control switching-on and switching-off.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in: according to the invention, only a cable is connected between the high-voltage power distribution cabinet and the field operation box, so that the cable between the high-voltage power distribution cabinet and the soft start control equipment is omitted, the field operation box and the soft start control equipment are arranged in the same power distribution room, the distance is short, the cable laying length is greatly reduced, the fault points are reduced, and the overhaul difficulty is reduced; when the high-voltage equipment is subjected to test inspection and maintenance, the operation of the high-voltage power distribution cabinet is only needed, the state limitation of the soft start control equipment is avoided, the equipment is simplified, and the efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of one embodiment of the present invention.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
The embodiment of the invention provides a switching-on control method of a high-voltage motor, which comprises the following steps: dividing a closing loop in a high-voltage power distribution cabinet into a working position closing loop and a test position closing loop which are connected in parallel, wherein the working position closing loop is connected with a 'ready and allowable closing' closing interlocking contact of soft start control equipment and a closing loop of a field operation box; when the high-voltage motor is in a working state, the switching-on and switching-off are controlled by a working position switching-on loop, a ' readiness ' of soft start control equipment, a switching-on interlocking contact allowing switching-on ' and a switching-on loop of a field operation box together, and a test position switching-on loop is disconnected; when the high-voltage motor is in a test state, the test position switching-on loop controls switching-off and switching-on, and the working position switching-on loop is disconnected.
As shown in fig. 1, the embodiment of the invention also provides a high-voltage motor switching-on control system, which adopts the high-voltage motor switching-on control method, and comprises a high-voltage power distribution cabinet, a field operation box and soft start control equipment, wherein a working position switching-on loop and a test position switching-on loop are arranged in the high-voltage power distribution cabinet, and are connected with an operation power supply in parallel through a selection switch, so that the working position switching-on loop and the test position switching-on loop can be switched on at different times; the soft start control equipment is ready and allows a closing interlocking contact of closing to be connected in series to a closing loop of the field operation box; and the switching-on loop of the field operation box is connected in series with the switching-on loop of the working position.
Preferably, a working position signal contact and a test position signal contact of a circuit breaker in the high-voltage power distribution cabinet are respectively connected in series in the working position closing loop and the test position closing loop.
Preferably, the soft start control device is arranged in the field operation box, and the 'ready, switch-on allowed' switch-on interlocking contact of the soft start control device is connected in series into a switch-on loop of the field operation box through a control cable.
Preferably, the selection switch is a trolley switch.
Preferably, a switching-on loop of the field operation box is connected with a switching-on button a in series to control switching-on and switching-off.
Preferably, a test position switching-on loop of the high-voltage power distribution cabinet is connected with a switching-on button b in series to control switching-on and switching-off.
The using process comprises the following steps: when the high-voltage motor is in a working state, when the selector switch is switched on the remote operation end, the working position switching-on loop of the high-voltage power distribution cabinet is connected with an operation power supply, and at the moment, the switching-on and switching-off operation of the high-voltage motor is jointly controlled by a switching-on button a of a switching-on switch and a switching-off button a of a field operation box, wherein the switching-on switch is ready and allowed to be switched on by soft start control equipment. When the high-voltage motor is in an overhauling and maintenance state, when the selection switch is switched on a local operation end, the test position switching-on loop of the high-voltage power distribution cabinet is switched on an operation power supply, and at the moment, the switching-on operation of the high-voltage motor is controlled by the switching-on button b of the high-voltage power distribution cabinet.
After the technical scheme is adopted, the following technical effects are realized:
(1) Saving the cost. Only need connecting cable between high-voltage distribution cabinet and the on-the-spot control box, saved the cable between high-voltage distribution cabinet and the soft start control equipment, on-the-spot control box and soft start control equipment arrange in same distribution room, and the distance is near, and the distance reduces to tens meters or even tens meters, has realized the reduction in a large margin of cable laying length. The average 300 meters can be used for saving about 3000 yuan.
(2) Reducing the failure point. The length of the cable is greatly reduced, the number of the cables is reduced, and fault points are reduced.
(3) And the difficulty and the workload of fault investigation are reduced. Once a fault occurs, the range of the fault point is clear, the cooperative investigation of multiple departments is not needed, maintenance personnel are not needed to run back and forth, communicate and check among the field operation box, the soft start control equipment and the high-voltage power distribution cabinet, and the fault processing time is shortened.
(4) The high-voltage motor is flexible in normal maintenance work and is not limited. When a high-voltage equipment maintainer performs normal test and inspection, maintenance work can be performed by only placing the panel selection switch of the high-voltage power distribution cabinet in local operation. Is not limited by the state of the soft start control equipment, and saves the interconnecting link and time.
(5) And energy is saved. When the high-voltage motor is inspected and maintained, the soft start control equipment can be in a complete stop state, so that electric energy consumption is avoided.
Claims (7)
1. A high-voltage motor closing control method is characterized in that: dividing a switching-on loop in a high-voltage power distribution cabinet into a working position switching-on loop and a test position switching-on loop which are connected in parallel, wherein the working position switching-on loop is connected with a switching-on interlocking joint of soft start control equipment and a switching-on loop of a field operation box; when the high-voltage motor is in a working state, the switching-on and switching-off are controlled by the working position switching-on loop, the switching-on interlocking contact of the soft start control device and the switching-on loop of the field operation box together, and the test position switching-on loop is disconnected; when the high-voltage motor is in a test state, the test position switching-on loop controls switching-off and switching-on, and the working position switching-on loop is disconnected.
2. A high-voltage motor closing control system, adopting the high-voltage motor closing control method as claimed in claim 1, characterized in that: the high-voltage power distribution cabinet is internally provided with a working position switching-on loop and a test position switching-on loop, the working position switching-on loop and the test position switching-on loop are connected with an operating power supply in parallel through a selection switch, and the working position switching-on loop and the test position switching-on loop can be switched on at different times; the switching-on interlocking contact of the soft start control device is connected in series to a switching-on loop of the field operation box; and the switching-on loop of the field operation box is connected in series with the switching-on loop of the working position.
3. The high-voltage motor switching-on control system according to claim 2, wherein a working position signal contact and a test position signal contact of a circuit breaker in the high-voltage power distribution cabinet are respectively connected in series in the working position switching-on loop and the test position switching-on loop.
4. The high-voltage motor switching-on control system according to claim 2, wherein the soft start control device is arranged in the field operation box, and switching-on interlocking contacts of the soft start control device are connected in series into a switching-on loop of the field operation box through a control cable.
5. A high voltage motor closing control system as claimed in claim 2, wherein the selector switch is a trolley switch.
6. A high voltage motor closing control system as claimed in claim 2, wherein the closing circuit of the field operation box is connected in series with a closing button a to control on and off.
7. The high-voltage motor switching-on control system according to claim 2, wherein the test position switching-on loop of the high-voltage power distribution cabinet is connected in series with a switching-on button b to control switching-on and switching-off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610962102.0A CN106325060B (en) | 2016-11-04 | 2016-11-04 | High-voltage motor closing control method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610962102.0A CN106325060B (en) | 2016-11-04 | 2016-11-04 | High-voltage motor closing control method and system |
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| CN106325060A CN106325060A (en) | 2017-01-11 |
| CN106325060B true CN106325060B (en) | 2023-06-20 |
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Citations (7)
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|---|---|---|---|---|
| CN201039046Y (en) * | 2007-05-17 | 2008-03-19 | 北京合康亿盛科技有限公司 | High-voltage frequency conversion start cabinet |
| GB201321401D0 (en) * | 2013-12-04 | 2014-01-15 | Eaton Ind Netherlands Bv | Automatic reclosing alternating current circuit breaker |
| CN104320039A (en) * | 2014-10-31 | 2015-01-28 | 武汉钢铁(集团)公司 | Drive control method and device of final dusting high-voltage motor of steel mill |
| CN104806507A (en) * | 2015-05-04 | 2015-07-29 | 中国市政工程西北设计研究院有限公司 | Electronic control system of water pump test board with two kinds of high voltage power supplies of 6 kV and 10 kV |
| CN204576122U (en) * | 2015-04-22 | 2015-08-19 | 许继（厦门）智能电力设备股份有限公司 | A kind of intelligent convergence control cabinet of improvement |
| CN105334761A (en) * | 2015-11-27 | 2016-02-17 | 安徽马钢工程技术集团有限公司 | On-off control circuit for 10kV motor |
| CN105897066A (en) * | 2014-12-22 | 2016-08-24 | 李伏书 | New technology enabling high-voltage variable-frequency system to drag cement production line high-temperature fan to continuously operate |
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2016
- 2016-11-04 CN CN201610962102.0A patent/CN106325060B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201039046Y (en) * | 2007-05-17 | 2008-03-19 | 北京合康亿盛科技有限公司 | High-voltage frequency conversion start cabinet |
| GB201321401D0 (en) * | 2013-12-04 | 2014-01-15 | Eaton Ind Netherlands Bv | Automatic reclosing alternating current circuit breaker |
| CN104320039A (en) * | 2014-10-31 | 2015-01-28 | 武汉钢铁(集团)公司 | Drive control method and device of final dusting high-voltage motor of steel mill |
| CN105897066A (en) * | 2014-12-22 | 2016-08-24 | 李伏书 | New technology enabling high-voltage variable-frequency system to drag cement production line high-temperature fan to continuously operate |
| CN204576122U (en) * | 2015-04-22 | 2015-08-19 | 许继（厦门）智能电力设备股份有限公司 | A kind of intelligent convergence control cabinet of improvement |
| CN104806507A (en) * | 2015-05-04 | 2015-07-29 | 中国市政工程西北设计研究院有限公司 | Electronic control system of water pump test board with two kinds of high voltage power supplies of 6 kV and 10 kV |
| CN105334761A (en) * | 2015-11-27 | 2016-02-17 | 安徽马钢工程技术集团有限公司 | On-off control circuit for 10kV motor |
Non-Patent Citations (1)
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| 杨鸿儒 ; 王钊 ; 王新梅 ; .液阻软启动装置在水泵机组高压电动机的应用.石油矿场机械.2007,(第07期),97-100. * |
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| CN106325060A (en) | 2017-01-11 |
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