CN112821265B - Method and device for automatically shielding and releasing signals for overhauling electrical equipment - Google Patents
Method and device for automatically shielding and releasing signals for overhauling electrical equipment Download PDFInfo
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- CN112821265B CN112821265B CN202011629118.2A CN202011629118A CN112821265B CN 112821265 B CN112821265 B CN 112821265B CN 202011629118 A CN202011629118 A CN 202011629118A CN 112821265 B CN112821265 B CN 112821265B
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000012423 maintenance Methods 0.000 claims abstract description 33
- 238000012790 confirmation Methods 0.000 claims description 14
- 230000000873 masking effect Effects 0.000 claims 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 description 5
- 230000011664 signaling Effects 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
Abstract
The invention discloses a method and a device for automatically shielding and releasing signals of electric equipment maintenance, wherein the method for automatically shielding and releasing the signals of the electric equipment maintenance comprises the following steps: acquiring the position state of the equipment-spaced ground knife; acquiring the position states of the disconnecting link at two sides of the equipment interval and the current flowing through the disconnecting link at two sides; when the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions, the starting signal shielding or the releasing signal shielding is determined according to the position states of the ground knife. The signal shielding is started or released through the position state of the ground knife, when the ground knife is in the closed position, the signal shielding is started, once the condition that the ground knife is in the closed position is changed, the dispatching automation system acquires the current position state of the ground knife according to the ground knife position state signal uploaded by the ground knife in real time, the position state of the ground knife is determined to be changed, the signal shielding is released immediately, and the monitoring signal is prevented from being leaked and recovered after the maintenance of the electrical equipment is completed.
Description
Technical Field
The embodiment of the invention relates to a technology for overhauling electric equipment, in particular to a method and a device for automatically shielding and releasing signals for overhauling electric equipment.
Background
With the increase of power demand and power grid construction speed, social power demand is gradually increased, and the inspection work of power grid equipment is also increased. The power grid is continuously increased, the signals of the dispatching end monitoring disc are more and more, and when equipment is subjected to fixed inspection and other works, a large number of interference signals are generated, so that the work of the dispatching end monitoring disc is seriously influenced.
At present, a station end shielding or a scheduling end shielding is generally adopted for a power grid, but no matter which method is adopted, the workload is increased, and the risk of missing recovery after the work is finished exists.
Disclosure of Invention
The invention provides a method and a device for automatically shielding and releasing signals of electric equipment maintenance, which are used for realizing automatic signal shielding when the equipment is in a maintenance state and automatic shielding when the equipment is not in the maintenance state.
In a first aspect, an embodiment of the present invention provides a method for automatically shielding and unmasking a signal for overhauling an electrical apparatus, where the method for automatically shielding and unmasking the signal for overhauling the electrical apparatus includes:
acquiring the position state of the equipment-spaced ground knife;
acquiring the position states of the two side disconnecting links of the equipment interval and the current flowing through the two side disconnecting links;
and when the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions, determining to start signal shielding or release signal shielding according to the position states of the ground knife.
Optionally, the device interval includes: at least one of a switching interval, a line interval, and a main transformer interval.
Optionally, the device interval is a switch interval;
determining to start signal shielding or to release signal shielding according to the position state of the ground knife comprises the following steps:
if the ground knives on two sides of the switch interval are in the combined state, starting signal shielding;
if the ground knife on one side of the switch interval is in a combined state and the ground knife on the other side of the switch is in a separated state, the signal is kept in an original state;
and if the ground knives on two sides of the switch interval are in the separated state, the signal shielding is released.
Optionally, the device interval is a line interval;
determining to start signal shielding or to release signal shielding according to the position state of the ground knife comprises the following steps:
if the line interval ground knife is in a combined state, starting signal shielding;
and if the ground knives of the line interval are in a split state, the signal shielding is released.
Optionally, the equipment interval is a main transformer interval;
determining to start signal shielding or to release signal shielding according to the position state of the ground knife comprises the following steps:
if the earth knife at any side of the main transformer interval is in a closing state, starting signal shielding;
and if the ground knives on the two sides of the main transformer interval are in a separated state, removing the signal shielding.
Optionally, when the position states of the two side knife switches and the current flowing through the two side knife switches meet the preset conditions, the method includes:
the two side knife switches are in a separated state, and the current flowing through the two side knife switches is zero.
Optionally, when the position state of the two side knife switches and the current flowing through the two side knife switches do not meet the preset condition, the signal shielding is released.
Optionally, when the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions, determining to start signal shielding or to release signal shielding according to the position states of the ground knife includes:
and generating a popup window confirmation window, and shielding or unmasking signals after receiving a confirmation shielding or unmasking instruction.
In a second aspect, an embodiment of the present invention further provides an apparatus for automatically shielding and shielding a signal for overhauling an electrical apparatus, where the apparatus for automatically shielding and shielding a signal for overhauling an electrical apparatus includes:
the first acquisition module is used for acquiring the position state of the ground knife at equipment intervals;
the second acquisition module is used for acquiring the position states of the two side disconnecting links of the equipment interval and the current flowing through the two side disconnecting links;
and the operation module is used for determining to start signal shielding or release signal shielding according to the position state of the ground knife when the position state of the two side knife switches and the current flowing through the two side knife switches meet preset conditions.
Optionally, the operation module includes:
and the confirmation unit is used for generating a popup confirmation window, and shielding or unmasking signals after receiving a confirmation shielding or unmasking instruction.
The embodiment of the invention provides a method and a device for automatically shielding and releasing signals for overhauling electric equipment, wherein the method for automatically shielding and releasing the signals for overhauling the electric equipment comprises the following steps: acquiring the position state of the equipment-spaced ground knife; acquiring the position states of the disconnecting link at two sides of the equipment interval and the current flowing through the disconnecting link at two sides; when the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions, the starting signal shielding or the releasing signal shielding is determined according to the position states of the ground knife. Compared with the station end shielding or scheduling end shielding mode in the prior art, after equipment overhaul is completed, the power system reacquires state signals of equipment intervals and sends shielding removing instructions to the station end or the scheduling end according to the state signals, the technical scheme of the embodiment starts signal shielding or removes signal shielding through the position states of the ground knives, when the ground knives are in an overhaul state, the signal shielding is started, once the situation that the ground knives are in the overhaul state is changed, the power system acquires the current position state of the ground knives according to the ground knife position state signals uploaded in real time, and determines that the position state of the ground knives is changed, the signal shielding is immediately removed, and the signal leakage recovery after the overhaul of the electrical equipment is avoided.
Drawings
Fig. 1 is a flowchart of a method for automatically shielding and unmasking signals for overhauling an electrical device according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method for automatically shielding and unmasking signals for overhauling an electrical device according to a second embodiment of the present invention.
Fig. 3 is a flowchart of another method for automatically shielding and unmasking signals for overhauling electrical equipment according to a second embodiment of the present invention.
Fig. 4 is a flowchart of a method for automatically shielding and unmasking signals for overhauling an electrical device according to a third embodiment of the present invention.
Fig. 5 is a flowchart of a method for automatically shielding and unmasking signals for overhauling another electrical device according to the third embodiment of the present invention.
Fig. 6 is a flowchart of a method for automatically shielding and unmasking signals for overhauling an electrical device according to a fourth embodiment of the present invention.
Fig. 7 is a flowchart of a method for automatically shielding and unmasking signals for overhauling another electrical device according to a fourth embodiment of the present invention.
Fig. 8 is a flowchart of a method for automatically shielding and unmasking signals for overhauling an electrical device according to a fifth embodiment of the present invention.
Fig. 9 is a schematic structural diagram of an apparatus for automatically shielding and removing a signal for overhauling an electrical device according to a sixth embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Example 1
Fig. 1 is a flowchart of a method for automatically shielding and removing a signal for electrical equipment maintenance according to an embodiment of the present invention, where the embodiment is applicable to a case where signal shielding is started or removed according to a state of an apparatus during electrical equipment maintenance, and the method may be performed by a device for automatically shielding and removing a signal for electrical equipment maintenance, and specifically includes the following steps:
s100: acquiring the position state of the equipment-spaced ground knife;
the equipment interval can be a switch interval, a line interval or a main control interval, and comprises a ground knife and two side knife switches, wherein the ground knife is connected with the ground, and the two side knife switches are connected between the bus and the ground knife. The position states of the ground knife comprise two states of the ground knife in a separated position and the ground knife in a combined position. The equipment interval generates a position state signal of the ground knife according to the position of the ground knife of the equipment interval and transmits the position state signal to the power dispatching automation system, and the dispatching automation system acquires the position state of the ground knife of the equipment interval.
S200: acquiring the position states of the disconnecting link at two sides of the equipment interval and the current flowing through the disconnecting link at two sides;
the position states of the two side knife switches comprise two states that the two side knife switches are positioned at the separating position and the two side knife switches are positioned at the closing position. The device interval generates position state signals of the two side disconnecting link according to the positions of the two side disconnecting link of the device interval and transmits the position state signals to the dispatching automation system, and the dispatching automation system acquires the position states of the two side disconnecting link of the device interval. And current transformers with corresponding switches at the positions of the two side disconnecting links detect the current flowing through the two side disconnecting links and transmit the current to the dispatching automation system.
S300: when the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions, the starting signal shielding or the releasing signal shielding is determined according to the position states of the ground knife.
The preset condition may be that the two side knife switches are located at the split position and the current is zero. When the equipment is overhauled, the equipment interval is in an overhauling state, namely, two sides of the equipment interval are located at the split position, when the two sides of the equipment interval are located at the split position, the current flowing through the two sides of the equipment interval is zero, so that when the two sides of the equipment interval are located at the split position and the acquired current is zero, the starting signal shielding or the signal shielding releasing is determined according to the position state of the ground knife. When the equipment interval is a line interval, when the two side knife switches of the line interval are positioned at the split position and the acquired current is zero, if the ground knife is positioned at the combined position, signal shielding is started; if the ground knife is located at the split position, the signal shielding is released.
According to the method for automatically shielding and removing the shielding of the signals for overhauling the electrical equipment, firstly, the position states of the ground knives of the equipment interval are obtained, then, the position states of the knife switches on the two sides of the equipment interval and the currents flowing through the knife switches on the two sides are obtained, and when the position states of the knife switches on the two sides and the currents flowing through the knife switches on the two sides meet preset conditions, the signal shielding is started or the signal shielding is removed according to the obtained position states of the ground knives. Compared with the station end shielding or scheduling end shielding mode in the prior art, after equipment overhaul is completed, the power system reacquires state signals of equipment intervals and sends shielding removing instructions to the station end or the scheduling end according to the state signals, the technical scheme of the embodiment starts signal shielding or removes signal shielding through the position states of the ground knives, when the ground knives are in an overhaul state, the signal shielding is started, once the situation that the ground knives are in the overhaul state is changed, the power system acquires the current position state of the ground knives according to the ground knife position state signals uploaded in real time, and determines that the position state of the ground knives is changed, the signal shielding is immediately removed, and the signal leakage recovery after the overhaul of the electrical equipment is avoided.
Example two
Optionally, the device interval includes: at least one of a switching interval, a line interval, and a main transformer interval.
The switch interval comprises ground knives and two side knife switches on two sides, the line interval comprises the ground knives and the two side knife switches on one side, and the main transformer interval comprises the ground knives and the two side knife switches on two sides.
Fig. 2 is a flowchart of a method for automatically shielding and unmasking signals for overhauling electrical equipment according to a second embodiment of the present invention, and referring to fig. 2, an optional equipment interval is a switch interval; the method for automatically shielding and removing the signals for overhauling the electrical equipment comprises the following steps:
s100: acquiring the position state of the equipment-spaced ground knife;
s200: acquiring the position states of the disconnecting link at two sides of the equipment interval and the current flowing through the disconnecting link at two sides;
s310: when the position states of the two side disconnecting link and the current flowing through the two side disconnecting link meet the preset conditions,
s301: if the ground knives on two sides of the switch interval are in the combined state, starting signal shielding;
when the equipment interval is the switch interval, the switch interval includes the earth sword of both sides, and when the maintenance is needed, the switch interval should be in the maintenance state that the earth sword of both sides all is located and closes the position, and when the earth sword of both sides all is located closes the position, then starts signal shielding, then overhauls of equipment.
S302: if the ground knife on one side of the switch interval is in a combined state and the ground knife on the other side of the switch is in a separated state, the signal is kept in an original state;
when the earth blades on two sides of the switch interval are operated, the earth blades on two sides may not be operated at the same time, so that the earth blade on one side is in a combined position, the earth blade on one side is in a separated position, and the signal is maintained in an original state, namely, the signal is in a shielding state before the signal, the shielding state of the signal is continuously maintained, and if the signal is in an unshielded state, the unshielded state of the signal is continuously maintained.
S303: and if the ground knives on two sides of the switch interval are in the separated state, the signal shielding is released.
When the ground knives on two sides are located at the separated positions, the overhaul state of the switch interval is changed, the overhaul is completed, the switch interval is changed to a cold standby state, and at the moment, the signal shielding is immediately released.
Fig. 3 is a flowchart of another method for automatically shielding and removing shielding signals for overhauling electric equipment according to the second embodiment of the present invention, referring to fig. 3, optionally, when the equipment interval is a switch interval, and when the knife switches on both sides of the switch are in separated positions and the current is zero, the ground knives on both sides of the switch interval are in combined positions, then signal shielding is started; the ground knife at one side of the switch interval is at the closing position, and the ground knife at one side is at the separating position, so that the original state is kept; the ground knives on the two sides of the switch are separated, and then the signal shielding is released. When the situation that the disconnecting link at the two sides of the switch is separated and the current is zero is not met, the signal shielding is released, and the switch is prompted to remotely measure the abnormal remote signaling, wherein the remote signaling refers to the measurement of the current quantity, and the remote signaling refers to the position state of the equipment interval.
In the method for automatically shielding and releasing the signals for overhauling the electrical equipment, when the equipment interval is the switch interval, when the ground knives on two sides of the switch interval are both in the on-position state, the signal shielding is started; when the ground knife at one side of the switch interval is in a combined state and the ground knife at the other side of the switch interval is in a separated state, the signal is kept in an original state; when the ground knives on two sides of the switch interval are in a separated state, the signal shielding is released, the starting signal shielding or the signal releasing is determined according to the position states of the ground knives on two sides of the switch interval, when the ground knives are in an overhauling state, the signal shielding is started, once the situation that the ground knives are in the overhauling state is changed, the overhauling state is changed into a cold standby state, the electric power system acquires the current position state of the ground knives according to the ground knife position state signals uploaded by the ground knives in real time, and the signal shielding is immediately released after the position state of the ground knives is determined to be changed, so that the signal leakage recovery after the overhauling of the electric equipment is avoided.
Example III
Fig. 4 is a flowchart of a method for automatically shielding and unmasking signals for overhauling an electrical device according to a third embodiment of the present invention, and referring to fig. 4, an optional device interval is a line interval;
s100: acquiring the position state of the equipment-spaced ground knife;
s200: acquiring the position states of the disconnecting link at two sides of the equipment interval and the current flowing through the disconnecting link at two sides;
s310: when the position states of the two side disconnecting link and the current flowing through the two side disconnecting link meet the preset conditions,
s304: if the line interval ground knife is in a combined state, starting signal shielding;
the line interval only comprises a ground knife at one side, when the line interval is in an overhauling state, namely the ground knife at the line interval is located at the closing position, and when the ground knife at the line interval is located at the closing position, signal shielding is started to start line overhauling.
S305: if the line-spaced ground knives are in the split state, the signal shielding is released.
When the ground knives of the line intervals are all located at the separated positions, the overhaul state of the line intervals is changed, the overhaul is completed, the line intervals are switched to a cold standby state, and at the moment, the signal shielding is immediately released.
Fig. 5 is a flowchart of another method for automatically shielding and removing a signal for overhauling an electrical device according to the third embodiment of the present invention, referring to fig. 5, optionally, when the device interval is a line interval, and when the knife switches on two sides of the line interval are in separated positions and the current is zero, the ground knife on the line interval is in combined positions, and then signal shielding is started; the line-spaced ground knives are split, and the signal shielding is released. When the two side disconnecting link which does not meet the line interval is in split position and the current is zero, the signal shielding is released, and the line interval telemetry remote signaling abnormality is prompted.
In the method for automatically shielding and releasing the signals for overhauling the electrical equipment, when the equipment interval is the line interval, when the earth knife of the line interval is in the combined state, the signal shielding is started; when the ground knife of the line interval is in a split state, the signal shielding is released. When the ground knife is in the maintenance state, starting signal shielding, and once the condition that the ground knife is in the maintenance state is changed, changing from the maintenance state to the cold standby state, acquiring the current position state of the ground knife by the power system according to the ground knife position state signal uploaded by the ground knife in real time, determining that the ground knife position state is changed, immediately removing the signal shielding, and avoiding the signal from leaking and recovering after the maintenance of the electrical equipment is completed.
Example IV
Fig. 6 is a flowchart of a method for automatically shielding and unmasking signals for overhauling electrical equipment according to a fourth embodiment of the present invention, and referring to fig. 6, an optional equipment interval is a main transformer interval;
s100: acquiring the position state of the equipment-spaced ground knife;
s200: acquiring the position states of the disconnecting link at two sides of the equipment interval and the current flowing through the disconnecting link at two sides;
s310: when the position states of the two side disconnecting link and the current flowing through the two side disconnecting link meet the preset conditions,
s306: if the ground knife on any side of the main transformer interval is in the close state, starting signal shielding;
when the equipment interval is the main transformer interval, the main transformer interval comprises ground knives at two sides, and when maintenance is needed, the main transformer interval is in a maintenance state. When the main transformer interval is in an overhauling state, the ground knives on any side are located at the combined position, signal shielding is started at the moment, and then overhauling of equipment is conducted.
S307: and if the ground knives on the two sides of the main transformer interval are in the separated state, the signal shielding is released.
When the ground knives on two sides of the main transformer interval are located at different positions, the overhaul state of the main transformer interval is changed, the overhaul is completed, the main transformer interval is changed into a cold standby state, and at the moment, the signal shielding is immediately released.
Fig. 7 is a flowchart of another method for automatically shielding and removing a signal for overhauling an electrical device according to the fourth embodiment of the present invention, referring to fig. 7, alternatively, when the device interval is a main transformer interval, when the knife switches on both sides of the main transformer interval are in separated positions and the current is zero, and when the knife on either side of the main transformer interval is in combined positions, the signal shielding is started; and if all the earth knives on each side of the main transformer interval are in separated positions, the signal shielding is released. When the two side disconnecting link which does not meet the main transformer interval is in split position and the current is zero, the signal shielding is released, and the main transformer interval remote sensing and remote signaling abnormality is prompted.
In the method for automatically shielding and releasing the signals for overhauling the electrical equipment, when the equipment interval is the main transformer interval, when the ground knife at any side of the main transformer interval is in the closed state, the signal shielding is started; and when the ground knives on the two sides of the main transformer interval are in the separated state, the signal shielding is released. When the ground knife is in the maintenance state, starting signal shielding, and once the condition that the ground knife is in the maintenance state is changed, changing from the maintenance state to the cold standby state, acquiring the current position state of the ground knife by the power system according to the ground knife position state signal uploaded by the ground knife in real time, determining that the ground knife position state is changed, immediately removing the signal shielding, and avoiding the signal from leaking and recovering after the maintenance of the electrical equipment is completed.
Example five
Fig. 8 is a flowchart of a method for automatically shielding and shielding an electrical equipment overhauling signal according to a fifth embodiment of the present invention, referring to fig. 8, optionally, the method for automatically shielding and shielding an electrical equipment overhauling signal specifically includes:
s100: acquiring the position state of the equipment-spaced ground knife;
s200: acquiring the position states of the disconnecting link at two sides of the equipment interval and the current flowing through the disconnecting link at two sides;
s300: when the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions, determining to start signal shielding or release signal shielding according to the position states of the ground knife;
optionally, a popup window is generated, and after receiving a confirmation shielding or shielding release instruction, signal shielding or shielding release is performed.
When the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions, a popup window is generated without judging the position states of the ground knife, and after a shielding confirmation instruction is received, signals are shielded. When the position states of the two side disconnecting link or the current flowing through the two side disconnecting link do not meet the preset condition, the signal shielding is released.
S400: and when the position states of the two side disconnecting link and the current flowing through the two side disconnecting link do not meet the preset conditions, the signal shielding is released.
The preset condition is that the two side knife switches are positioned at the split position, the current flowing through the two side knife switches is zero, when the two side knife switches are positioned at the split position, the current flowing through the two side knife switches is not zero or the two side knife switches are positioned at the closed position, the current flowing through the two side knife switches is zero or the two side knife switches are positioned at the closed position, the position states of the two side knife switches and the current flowing through the two side knife switches do not meet the preset condition, at the moment, the possible current information acquisition is wrong or the error occurs when the position states of the two side knife switches are acquired, or the equipment interval is not in the maintenance state and signal shielding is not needed, the signal shielding is released, and the position states of the two side knife switches and the current flowing through the two side knife switches are acquired again.
According to the method for automatically shielding and removing the shielding of the signals for overhauling the electrical equipment, when the position states of the knife switches at the two sides and the current flowing through the knife switches at the two sides meet preset conditions, a popup window is generated, and after receiving a shielding instruction, a controller inputs the shielding instruction into the popup window to shield the signals; and when the position states of the two side disconnecting link and the current flowing through the two side disconnecting link do not meet the preset conditions, the signal shielding is released. After receiving the shielding instruction, the generated popup window is used for signal shielding, and when the position states of the two side disconnecting link and the current flowing through the two side disconnecting link do not meet the preset conditions, the signal shielding is released, so that the correctness of the signal shielding situation is further ensured, and the signal is prevented from being shielded by mistake.
Example six
Fig. 9 is a schematic structural diagram of an apparatus for automatically shielding and shielding signals for overhauling an electrical device according to a sixth embodiment of the present invention, and referring to fig. 9, optionally, the apparatus for automatically shielding and shielding signals for overhauling an electrical device includes:
a first acquiring module 10, configured to acquire a position state of a ground knife of an equipment interval;
a second obtaining module 20, configured to obtain the position states of the two side disconnecting links at the equipment interval and the currents flowing through the two side disconnecting links;
and the operation module 30 is used for determining to start signal shielding or release signal shielding according to the position state of the ground knife when the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions.
The device for automatically shielding and removing the shielding of the signals for overhauling the electrical equipment provided by the embodiment comprises: the first acquisition module is used for acquiring the position state of the ground knife at equipment intervals; the second acquisition module is used for acquiring the position states of the two side disconnecting links of the equipment interval and the current flowing through the two side disconnecting links; and the operation module is used for determining to start signal shielding or release signal shielding according to the position state of the ground knife when the position state of the knife switches at the two sides and the current flowing through the knife switches at the two sides meet preset conditions. When the knife switches on the two sides are positioned at the split position and the current is zero, the operation module starts signal shielding if the ground knife is positioned at the split position, and releases the signal shielding if the ground knife is positioned at the combined position. According to the technical scheme, the signal shielding is started or released through the position state of the ground knife, when the ground knife is in the maintenance state, the signal shielding is started, once the condition that the ground knife is in the maintenance state changes, the electric power system acquires the current position state of the ground knife according to the ground knife position state signal uploaded by the ground knife in real time, and the situation that the ground knife position state changes is determined, the signal shielding is released immediately, and the signal leakage recovery after the maintenance of the electric equipment is completed is avoided. With continued reference to fig. 9, the optional execution module 30 includes:
and the confirmation unit 31 is used for generating a popup confirmation window, and performing signal shielding or unmasking after receiving a confirmation shielding or unmasking instruction.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (8)
1. A method for automatically shielding and unmasking signals for electrical equipment maintenance, comprising:
acquiring the position state of the equipment-spaced ground knife;
the equipment interval is a switch interval, the switch interval comprises a ground knife and two side knife switches at two sides, the ground knife is connected with the ground, and the two side knife switches are connected between a bus and the ground knife;
acquiring the position states of the two side disconnecting links of the equipment interval and the current flowing through the two side disconnecting links;
when the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions, determining to start signal shielding or release signal shielding according to the position states of the ground knife;
when the two side knife switches are in a separated state and the current flowing through the two side knife switches is zero, the preset condition is met;
when the two side knife switches are in a separated state and the current flowing through the two side knife switches is zero, determining to start signal shielding or release signal shielding according to the position state of the ground knife, including:
if the ground knives on two sides of the switch interval are in the combined state, starting signal shielding;
if the ground knife on one side of the switch interval is in a combined state and the ground knife on the other side of the switch interval is in a separated state, the signal is kept in an original state;
and if the ground knives on two sides of the switch interval are in a split state, the signal shielding is released.
2. A method for automatically shielding and unmasking signals for electrical equipment maintenance, comprising:
acquiring the position state of the equipment-spaced ground knife;
the equipment interval is a line interval, the line interval comprises a ground knife and two side knife switches at one side, the ground knife is connected with the ground, and the two side knife switches are connected between a bus and the ground knife;
acquiring the position states of the two side disconnecting links of the equipment interval and the current flowing through the two side disconnecting links;
when the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions, determining to start signal shielding or release signal shielding according to the position states of the ground knife;
when the two side knife switches are in a separated state and the current flowing through the two side knife switches is zero, the preset condition is met;
determining to start signal shielding or to release signal shielding according to the position state of the ground knife comprises the following steps:
if the earth knife of the line interval is in a closing state, starting signal shielding;
and if the ground knives of the line interval are in a split state, the signal shielding is released.
3. A method for automatically shielding and unmasking signals for electrical equipment maintenance, comprising:
acquiring the position state of the equipment-spaced ground knife;
the equipment interval is a main transformer interval, the main transformer interval comprises ground knives and two side knife switches at two sides, the ground knives are connected with the ground, and the two side knife switches are connected between a bus and the ground knives;
acquiring the position states of the two side disconnecting links of the equipment interval and the current flowing through the two side disconnecting links;
when the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions, determining to start signal shielding or release signal shielding according to the position states of the ground knife;
when the two side knife switches are in a separated state and the current flowing through the two side knife switches is zero, the preset condition is met;
determining to start signal shielding or to release signal shielding according to the position state of the ground knife comprises the following steps:
if the earth knife on either side of the main transformer interval is in a combined state, starting signal shielding;
and if the ground knives on the two sides of the main transformer interval are in a split state, removing the signal shielding.
4. A method for automatically shielding and unmasking signals for electrical equipment maintenance, comprising:
acquiring the position state of the equipment-spaced ground knife;
the equipment interval comprises the ground knife and two side knife switches, the ground knife is connected with the ground, and the two side knife switches are connected between a bus and the ground knife;
acquiring the position states of the two side disconnecting links of the equipment interval and the current flowing through the two side disconnecting links;
when the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions, a popup window confirmation window is generated, and after a confirmation shielding instruction is received, signals are shielded;
when the two side disconnecting link is positioned at the split position and the current flowing through the two side disconnecting link is zero, the preset condition is met;
when the two side knife switches are positioned at the split position, the current flowing through the two side knife switches is not zero or the two side knife switches are positioned at the closed position, the current flowing through the two side knife switches is not zero, the preset condition is not met, and the signal shielding is released.
5. An apparatus for automatically shielding and de-shielding signals for electrical equipment maintenance, comprising:
the first acquisition module is used for acquiring the position state of the ground knife at equipment intervals;
the equipment interval is a switch interval, the switch interval comprises a ground knife and two side knife switches at two sides, the ground knife is connected with the ground, and the two side knife switches are connected between a bus and the ground knife;
the second acquisition module is used for acquiring the position states of the two side disconnecting links of the equipment interval and the current flowing through the two side disconnecting links;
the operation module is used for determining to start signal shielding or release signal shielding according to the position state of the ground knife when the position state of the two side knife switches and the current flowing through the two side knife switches meet preset conditions;
when the two side knife switches are in a separated state and the current flowing through the two side knife switches is zero, the preset condition is met;
wherein determining to activate or deactivate signal masking based on the position status of the earth blade comprises:
if the ground knives on two sides of the switch interval are in the combined state, starting signal shielding;
if the ground knife on one side of the switch interval is in a combined state and the ground knife on the other side of the switch interval is in a separated state, the signal is kept in an original state;
and if the ground knives on two sides of the switch interval are in a split state, the signal shielding is released.
6. An apparatus for automatically shielding and de-shielding signals for electrical equipment maintenance, comprising:
the first acquisition module is used for acquiring the position state of the ground knife at equipment intervals;
the equipment interval is a line interval, the line interval comprises a ground knife and two side knife switches on one side, the ground knife is connected with the ground, and the two side knife switches are connected between a bus and the ground knife;
the second acquisition module is used for acquiring the position states of the two side disconnecting links of the equipment interval and the current flowing through the two side disconnecting links;
the operation module is used for determining to start signal shielding or release signal shielding according to the position state of the ground knife when the position state of the two side knife switches and the current flowing through the two side knife switches meet preset conditions;
when the two side knife switches are in a separated state and the current flowing through the two side knife switches is zero, the preset condition is met;
wherein determining to activate or deactivate signal masking based on the position status of the earth blade comprises:
if the earth knife of the line interval is in a closing state, starting signal shielding;
and if the ground knives of the line interval are in a split state, the signal shielding is released.
7. An apparatus for automatically shielding and de-shielding signals for electrical equipment maintenance, comprising:
the first acquisition module is used for acquiring the position state of the ground knife at equipment intervals;
the equipment interval is a main transformer interval, the main transformer interval comprises ground knives and two side knife switches at two sides, the ground knives are connected with the ground, and the two side knife switches are connected between a bus and the ground knives;
the second acquisition module is used for acquiring the position states of the two side disconnecting links of the equipment interval and the current flowing through the two side disconnecting links;
the operation module is used for determining to start signal shielding or release signal shielding according to the position state of the ground knife when the position state of the two side knife switches and the current flowing through the two side knife switches meet preset conditions;
when the two side knife switches are in a separated state and the current flowing through the two side knife switches is zero, the preset condition is met;
wherein determining to activate or deactivate signal masking based on the position status of the earth blade comprises:
if the earth knife on either side of the main transformer interval is in a combined state, starting signal shielding;
and if the ground knives on the two sides of the main transformer interval are in a split state, removing the signal shielding.
8. An apparatus for automatically shielding and de-shielding signals for electrical equipment maintenance, comprising:
the first acquisition module is used for acquiring the position state of the ground knife at equipment intervals;
the equipment interval comprises the ground knife and two side knife switches, wherein the ground knife is connected with the ground, and the two side knife switches are connected between a bus and the ground knife;
the second acquisition module is used for acquiring the position states of the two side disconnecting links of the equipment interval and the current flowing through the two side disconnecting links;
the operation module is used for generating a popup window confirmation window when the position states of the two side knife switches and the current flowing through the two side knife switches meet preset conditions, and shielding signals after receiving a confirmation shielding instruction;
when the two side disconnecting link is positioned at the split position and the current flowing through the two side disconnecting link is zero, the preset condition is met;
when the two side knife switches are positioned at the split position, the current flowing through the two side knife switches is not zero or the two side knife switches are positioned at the closed position, the current flowing through the two side knife switches is not zero, the preset condition is not met, and the signal shielding is released.
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| CN202011629118.2A CN112821265B (en) | 2020-12-31 | 2020-12-31 | Method and device for automatically shielding and releasing signals for overhauling electrical equipment |
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| CN202011629118.2A CN112821265B (en) | 2020-12-31 | 2020-12-31 | Method and device for automatically shielding and releasing signals for overhauling electrical equipment |
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| CN103269124A (en) * | 2013-05-07 | 2013-08-28 | 国家电网公司 | System achieving substation misinformation remote signaling scheduling end filtration |
| CN103236745A (en) * | 2013-05-07 | 2013-08-07 | 国家电网公司 | Distinguishing method of misreported remote signaling and correct remote signaling of transformer substation |
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| KR101920933B1 (en) * | 2016-10-26 | 2018-11-21 | 박경희 | Switchboard with smart remote control doors |
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