Signal intelligent sending device

Abstract

The present application discloses a signal intelligent sending device, including a main relay and a sub-relay; the main contact of the main relay is connected in series with the knife switch position contact and the operation light to form a main circuit; the signal contact is connected with a branch circuit, and each branch circuit includes three branches, namely: the normally open contact of the main relay, the normally closed contact of the sub-relay, the normally open contact of the main relay, the parallel shielding button and the normally open contact of the sub-relay, the main contact of the sub-relay, and the abnormal light. The signal intelligent sending device provided by the embodiment of the present invention effectively eliminates the situation that the dispatcher cannot monitor the operation of the busbar protection device of the section when it is known that a certain protection has an abnormality waiting to be processed or is working; prevents a certain protection abnormality from not being discovered during this period and causing an over-tripping to cause the accident to expand, resulting in a large-scale power outage; improves the reliability of power supply; avoids the problem of adding a public measurement and control device in the high-voltage room to solve this problem, and the problem of power outage and high cost.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power safety, and in particular relates to an intelligent signal sending device. Background Art

[0002] At present, long-term and large-scale power outages in cities will seriously affect the normal operation of urban production and life, and affect people's life experience to a certain extent. However, how to effectively control the scope and duration of power outages is a difficult problem that both the main grid and the distribution network are very concerned about. At present, the misoperation and refusal of circuit breakers in the power system are the main factors that expand the scope of power outages and increase the duration of power outages. Therefore, it is necessary to effectively monitor the operating status of circuit breakers, protection devices and tripping and closing circuits to ensure that circuit breakers, devices and circuit abnormalities can be discovered and handled in time. Among them, the 10kV circuit breaker is the main bridge between the main grid and the distribution network, and it is also one of the main electrical equipment that directly affects customers' electricity consumption. In the current main grid, most substations, especially those with long service life and heavy loads, are connected to the public measurement and control device in the form of hand-in-hand, and merged into several hard contact signals to be sent to the monitoring background and dispatching end. However, there are problems with the merged signal transmission:

[0003] (1) When a 10kV interval is under maintenance or operating abnormally, the protection device sends such important hard contact signals. The monitoring background and dispatching end receive the hard contact signals of the 10kV busbar where the device is located, and other intervals cannot be effectively monitored, resulting in a monitoring blind spot.

[0004] (2) Failure to handle abnormalities in a timely manner is likely to lead to over-tripping, causing the accident to expand and causing large-scale power outages.

[0005] At present, in order to solve this problem, a public measurement and control panel is installed in the high-voltage room of a newly built substation. At the same time, a cable is laid from each switch cabinet to the public measurement and control panel to realize the separate transmission of the hard contact signals of each switch cabinet. However, using this method to transform the signal problem of the old station requires a large amount of work, a long power outage time, and a long load loss. At the same time, the economic and labor costs of the transformation are very high, and some stations are very difficult to transform due to their years of operation. Summary of the invention

[0006] The purpose of the present invention is to provide a signal intelligent sending device to solve the above technical problems.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] The intelligent signal sending device includes a main relay and a sub-relay;

[0009] The main contact of the main relay is connected in series with the switch position contact and the running light to form a main circuit;

[0010] The signal contact is connected to a branch circuit, each of which includes three branches:

[0011] The normally open contact of the main relay and the normally closed contact of the auxiliary relay,

[0012] The normally open contact of the main relay, the parallel shielding button and the normally open contact of the auxiliary relay, the main contact of the auxiliary relay,

[0013] and abnormal lights.

[0014] As an optional technical solution of the embodiment of the present invention, the number of the auxiliary relays is several, and each signal contact is connected to one of the branch circuits;

[0015] Among them, each branch circuit corresponds to a separate auxiliary relay, a normally open contact of the main relay, a shielding button, and an abnormal light.

[0016] As an optional technical solution of the embodiment of the present invention, the operating light and the abnormal light are both light emitting diodes.

[0017] As an optional technical solution of the embodiment of the present invention, each auxiliary relay is further connected in series with a high resistor.

[0018] As an optional technical solution of the embodiment of the present invention, each abnormal lamp is further connected in series with a protection resistor.

[0019] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0020] The intelligent signal sending device provided in the embodiment of the present invention effectively eliminates the situation where the dispatcher is unable to monitor the operation of the busbar protection device of the section when it is known that a certain protection has an abnormality waiting to be processed or is working; prevents a certain protection abnormality from not being discovered during this period and causing over-tripping, resulting in the expansion of the accident and causing a large-scale power outage; improves the power supply reliability; and avoids the problem of adding a public measurement and control device in the high-voltage room to solve this problem, which requires a power outage and is costly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0023] Figure 1 An electrical schematic diagram of a signal intelligent sending device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1 shown.

[0026] This embodiment provides a signal intelligent sending device, including a main relay and a sub-relay.

[0027] The main contacts of the main relay are connected in series with the switch position contacts and the running light to form a main circuit.

[0028] The signal contact is connected to a branch circuit, each of which includes three branches:

[0029] The normally open contact of the main relay and the normally closed contact of the auxiliary relay,

[0030] The normally open contact of the main relay, the parallel shielding button and the normally open contact of the auxiliary relay, the main contact of the auxiliary relay,

[0031] and abnormal lights.

[0032] As an optional manner of this embodiment, the number of the auxiliary relays is several, and each signal contact is connected to one of the branch circuits respectively.

[0033] Among them, each branch circuit corresponds to a separate auxiliary relay, a normally open contact of the main relay, a shielding button, and an abnormal light.

[0034] As an optional manner of this embodiment, the operating light and the abnormal light are both light emitting diodes.

[0035] Furthermore, each slave relay is also connected in series with a high resistance, namely, high resistance RH1 to high resistance RHN.

[0036] Each abnormal lamp is also connected in series with a protection resistor, namely, the protection resistor R1 to the protection resistor RN.

[0037] Wherein, N is a natural number.

[0038] The working principle of the signal intelligent sending device provided in this embodiment is as follows:

[0039] When a 10kV interval is under maintenance, the busbar switch must be opened, and the corresponding switch position contact S is disconnected. At this time, the running light L (i.e., light-emitting diode L) goes out, and the relay K loses its magnetism. At the same time, the normally open contact of K is disconnected, and the hard contact signal loop is exited, so as to prevent the monitoring background and dispatching end from receiving the 10kV busbar hard contact signal of the section where the device is located, and avoid the impact on the effective monitoring of hard contact signals of other intervals.

[0040] When a certain 10kV interval is in operation, the busbar switch must be closed, and its corresponding switch position contact S is closed. At this time, the operating light L (i.e., light-emitting diode L) is on, relay K is energized and the normally open contact of K is closed, and the hard contact signal circuit is put into operation. The monitoring background and dispatching end can effectively monitor the operating interval hard contact signal.

[0041] When a 10kV interval reports an abnormal signal 1, that is, the signal contact S1 is closed, the device abnormal light L1 (i.e., light-emitting diode L1) is on, and the corresponding hard contact signal sent by the interval can be sent normally, but the monitoring background and dispatching end receive the hard contact signal of the 10kV bus section where the device is located, and cannot effectively monitor other intervals of the bus section. At this time, the operation and maintenance personnel should notify the team members to deal with the abnormality in time. For abnormalities that need to be handled by spare parts, by pressing the shielding button S1, the relay K1 is energized and the K1 normally open contact is closed, so that the relay K1 is self-retained, and the K1 normally closed contact is disconnected, and the hard contact signal circuit exits, thereby shielding the hard contact signal of the interval, and also avoiding the impact on the effective monitoring of the hard contact signals of other intervals. After the spare parts are in place to handle the abnormality, the signal contact S1 is disconnected, the relay K1 is demagnetized, the K1 normally open contact is disconnected, the K1 normally closed contact is closed, the hard contact signal circuit is re-entered, and the device abnormal light L1 is off.

[0042] Similarly, the principles of other signal contacts of the device are the same. Among them, C00N and d00N are nodes of the Nth branch loop, a001 and b001 are nodes of the main loop, and N is a natural number.

[0043] The intelligent signal sending device provided in the embodiment of the present invention effectively eliminates the situation where a dispatcher is unable to monitor the operation of the busbar protection device of a certain section when it is known that a certain protection has an abnormality waiting to be processed or is working; it prevents a certain protection abnormality from not being discovered during this period and causing an over-tripping, which causes the accident to expand and cause a large-scale power outage; it improves the power supply reliability; it avoids the need to add a public measurement and control device in the high-voltage room to solve this problem, which requires a power outage and is costly; this device is based on engineering reality and provides the industry with an innovative solution to the problems of the prior art that does not require a power outage, has a fast transformation time and is low in cost.

[0044] Here, technical vocabulary is used only for the purpose of describing specific example embodiments and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" used herein may be intended to include the plural forms as well. The terms "comprises", "comprising", "including", and "having" are inclusive, and thus specify the presence of the claimed features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or additional presence of one or more other features, wholes, steps, operations, elements, components, and / or combinations thereof. Unless the order of execution is explicitly indicated, the method steps, processing, and operations described herein are not interpreted as necessarily needing to be performed in the specific order discussed and shown. It should also be understood that additional or optional steps may be adopted.

[0045] When an element or layer is referred to as being "on ...", "engaged with ...", "connected to" or "coupled to" another element or layer, it may be directly on another element or layer, engaged with another element or layer, connected to or coupled to another element or layer, or there may be an intervening element or layer. In contrast, when an element or layer is referred to as being "directly on ...", "directly engaged with ...", "directly connected to" or "directly coupled to" another element or layer, there may be no intervening element or layer. Other words used to describe element relationships should be interpreted in a similar manner (e.g., "between ..." and "directly between ...", "adjacent" and "directly adjacent", etc.). The term "and / or" used herein includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts are not limited by these terms. These terms may only be used to distinguish one element, component, region or part from another element, component, region or part. Unless clearly indicated by the context, the use of terms such as "first", "second" and other numerical terms herein does not imply sequence or order. Therefore, the first element, component, region, layer or part discussed below can adopt the terminology of the second element, component, region, layer or part without departing from the teaching of the exemplary embodiment.

[0046] Spatially relative terms, such as "inside", "outside", "below", "below...", "lower", "above", "upper", etc., may be used herein for ease of description to describe the relationship between one element or feature and one or more other elements or features as shown in the figure. Spatially relative terms may be meant to include different orientations of the device in addition to the orientation depicted in the figure. For example, if the device in the figure is flipped, the elements described as "below other elements or features" or "below elements or features" will be oriented as "above other elements or features". Therefore, the example term "below..." may include both upward and downward orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations) and interpreted with the spatially relative descriptions herein.

[0047] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The signal intelligent sending device is characterized by: Including main relay and auxiliary relay; The main contact of the main relay is connected in series with the switch position contact and the running light to form a main circuit; The signal contact is connected to a branch circuit, each of which includes three branches: The normally open contact of the main relay and the normally closed contact of the auxiliary relay, The normally open contact of the main relay, the parallel shielding button and the normally open contact of the auxiliary relay, the main contact of the auxiliary relay, and abnormal lights; There are several auxiliary relays, and each signal contact is connected to one of the branch circuits. When a 10kV interval is under maintenance, the bus switch must be opened, and its corresponding switch position contact is disconnected. At this time, the running light goes out and the main relay loses magnetism. At the same time, the normally open contact of the main relay is disconnected, and the hard contact signal circuit is exited to prevent the monitoring background and the dispatching end from receiving the 10kV bus hard contact signal of the section where the signal intelligent uploading device is located, thereby avoiding the impact on the effective monitoring of the hard contact signals of other intervals. When a 10kV interval is running, the bus switch must be closed, and its corresponding switch position contact is closed. At this time, the running light is on, the main relay is energized, and the normally open contact of the main relay is closed, and the hard contact signal circuit is put into use. The monitoring background and the dispatching end can effectively monitor the operating interval hard contact signal. When a 10kV interval alarm signal is abnormal, that is, the signal corresponding to the interval is The signal contact is closed, and the abnormal light is on. The corresponding hard contact signal from the interval can be sent up normally, but the monitoring background and dispatching end receive the hard contact signal of the 10kV busbar section where the device is located, and cannot effectively monitor other intervals of this busbar section. At this time, the operation and maintenance personnel notify the team members to deal with the abnormality in time; for the abnormality that needs to be handled by spare parts, by pressing the shielding button, the auxiliary relay is energized and the normally open contact of the auxiliary relay is closed, so that the auxiliary relay is self-holding, and the normally closed contact of the auxiliary relay is disconnected, and the hard contact signal circuit exits, thereby shielding the hard contact signal of the interval, and also avoiding the impact on the effective monitoring of the hard contact signals of other intervals; after the spare parts are in place to handle the abnormality, the signal contact is disconnected, the auxiliary relay is demagnetized, the normally open contact of the auxiliary relay is disconnected, the normally closed contact of the auxiliary relay is closed, the hard contact signal circuit is re-engaged, and the abnormal light of the device goes out.

2. The intelligent signal sending device according to claim 1, characterized in that: Each branch circuit corresponds to a separate auxiliary relay, a normally open contact of the main relay, a shielding button, and an abnormal light.

3. The intelligent signal sending device according to claim 2, characterized in that: The operating light and abnormal light are both light emitting diodes.

4. The intelligent signal sending device according to claim 3 is characterized in that: Each slave relay is also connected in series with a high resistor.

5. The intelligent signal sending device according to claim 4, characterized in that: Each abnormal lamp is also connected in series with a protective resistor.

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