CN112698149A - Method and device for detecting electrification of urban rail transit substation - Google Patents
Method and device for detecting electrification of urban rail transit substation Download PDFInfo
- Publication number
- CN112698149A CN112698149A CN202011422916.8A CN202011422916A CN112698149A CN 112698149 A CN112698149 A CN 112698149A CN 202011422916 A CN202011422916 A CN 202011422916A CN 112698149 A CN112698149 A CN 112698149A
- Authority
- CN
- China
- Prior art keywords
- substation
- main
- current
- judgment result
- slave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
Abstract
The invention discloses a method and a device for detecting electrification of an urban rail transit substation. The method comprises the following steps: a feeder line of a main substation is maintained and grounded, or three phases of a bus side of a current transformer of the main substation are short-circuited; the main substation and the slave substations form a passage; and closing an isolating switch of a power transformer feeder line of the tail-end substation, and closing a breaker of the power transformer feeder line. The set currents are input to A, B, A, C and B, C phases on the high-voltage side of the power transformer, and it is determined whether or not the currents flowing through the protection devices of the main substation, the slave substation and the end substation are correct. The invention can check the differential protection polarity and the primary cable phase verification of the protection device by applying current to the high-voltage terminal of the power transformer and returning the current to the outlet side of the upper-stage substation.
Description
Technical Field
The invention relates to the technical field of power transmission, in particular to a method and a device for detecting electrification of an urban rail transit substation.
Background
Before the urban rail transit substation is powered on, a primary circuit is generally subjected to a power-on test to finally verify the installation correctness of the high-voltage cable and the correctness of secondary wiring of the current transformer, so that the differential protection is prevented from misoperation, and the primary power transmission is successful. The existing detection method has the following problems: although the polarity of the secondary connection wire of the current transformer with differential protection can be corrected during the test, the secondary connection wire still has the possibility of loosening and falling in the time period from the test to the power transmission. Particularly, the differential protection circuits of two adjacent substations are difficult to actually test from the root, so that the possibility of polarity error still exists. The conventional primary circuit current (current) test is difficult to perform due to difficult actual operation and large consumption of manpower and material resources, and is generally controlled from the principle of a protection device and the polarity of a current transformer. However, in the actual power transmission process, malfunction of the differential protection due to a polarity problem may occur.
Therefore, how to verify the correctness of the secondary wiring of the differential circuit and the correctness of the installation of the primary circuit cable by adopting a simple and easy method to carry out an electrifying test on the urban rail transit substation becomes a technical problem to be solved and a key point of constant research for technical personnel in the field.
Disclosure of Invention
In view of this, the embodiment of the invention provides an urban rail transit substation energization detection method and an urban rail transit substation energization detection device, so as to solve the problems of low efficiency, low accuracy, high operation difficulty and high maintenance cost of the urban rail transit substation energization detection method in the prior art.
Therefore, the embodiment of the invention provides the following technical scheme:
the invention provides a first aspect of an urban rail transit substation electrifying detection method, which comprises the following steps:
the method comprises the following steps of maintaining and grounding a feeder line of a main substation, or short-circuiting three phases at a bus side of a current transformer of the main substation; the main substation and the slave substations form a passage;
closing an isolation switch of a power transformer feeder of a terminal substation, closing a circuit breaker of the power transformer feeder, the terminal substation forming a path with the master substation and the slave substations;
inputting a first set current to A, B phases on a high-voltage side of the power transformer, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail end substation are correct to obtain a first judgment result;
if the first judgment result is yes, inputting a second set current to A, C phases on the high-voltage side of the power transformer, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail-end substation are correct to obtain a second judgment result;
if the second determination result is yes, inputting a third set current to the B, C phase on the high-voltage side of the power transformer, and determining whether the currents flowing through the protection devices of the main substation, the slave substations and the end substation are correct to obtain a third determination result;
and if the third judgment result is yes, the main substation, the auxiliary substation and the tail end substation are correctly connected.
Further, the determining whether or not the currents flowing through the protection devices of the main substation, the slave substations, and the end substation are correct includes:
and determining whether or not the values of the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct, and determining whether or not the polarities of the currents flowing through the protection devices of the main substation and the slave substation are correct.
Further, the third determination result is that after the third determination result is yes, the method further includes:
inputting a fourth set current to the A, B phase on the high-voltage side of the power transformer, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail end substation are correct to obtain a fourth judgment result;
if the fourth judgment result is yes, inputting a fifth set current to the A, C phase of the high-voltage side of the power transformer, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail end substation are correct to obtain a fifth judgment result;
if the fifth judgment result is yes, inputting a sixth set current to the B, C phase of the high-voltage side of the power transformer, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail end substation are correct to obtain a sixth judgment result;
and if the sixth judgment result is yes, the main substation, the slave substation and the tail end substation are correctly connected.
Further, the first setting current, the second setting current and the third setting current are all 5A.
Further, the fourth setting current, the fifth setting current and the sixth setting current are all 20A.
Further, the main substation, the slave substation and the terminal substation are all substations of a GIS cabinet.
Further, the main substation, the slave substation and the terminal substation are all AIS cabinet substations; and carrying out short circuit on the three phases at the bus side of the current transformer of the main substation by using a copper bar at the bus side of the current transformer of the main substation.
In a second aspect of the present invention, an apparatus for detecting the electrification of an urban rail transit substation is provided, which includes a current source;
the method comprises the following steps of maintaining and grounding a feeder line of a main substation, or short-circuiting three phases at a bus side of a current transformer of the main substation; the main substation and the slave substations form a passage; closing an isolating switch of a power transformer feeder of a terminal substation, closing a breaker of the power transformer feeder, and supplying power to feeders of a path formed by the terminal substation, the main substation and the auxiliary substation;
the current source is connected to A, B phases on the high-voltage side of the power transformer, a first set current is input, and whether the current flowing through the protection devices of the main substation, the auxiliary substation and the tail-end substation is correct or not is judged to obtain a first judgment result;
if the first judgment result is yes, switching the current source into A, C phases on the high-voltage side of the power transformer, inputting a second set current, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail end substation are correct to obtain a second judgment result;
if the second judgment result is yes, switching the current source into B, C phases on the high-voltage side of the power transformer, inputting a third set current, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail end substation are correct to obtain a third judgment result;
and if the third judgment result is yes, the main substation, the auxiliary substation and the tail end substation are correctly connected.
After the third determination result is yes, the current source is further configured to input a fourth set current to the A, B phase on the high-voltage side of the power transformer, and determine whether or not the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct to obtain a fourth determination result;
if the fourth determination result is yes, the current source is further configured to input a fifth set current to the A, C phase on the high-voltage side of the power transformer, and determine whether or not the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct to obtain a fifth determination result;
if the fifth judgment result is yes, the current source is further configured to input a sixth set current to the B, C phase on the high-voltage side of the power transformer, and judge whether or not the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct to obtain a sixth judgment result;
and if the sixth judgment result is yes, the main substation, the slave substation and the tail end substation are correctly connected.
Further, the main substation, the slave substation and the terminal substation are all AIS cabinet substations; the electrified detection device of the urban rail transit substation further comprises a short-circuit wire, and the short-circuit wire is used for short-circuiting a copper bar on the bus side of a current transformer of the main substation of the AIS cabinet.
The technical scheme of the embodiment of the invention has the following advantages:
the embodiment of the invention provides a method and a device for detecting electrification of an urban rail transit substation. The existing method for detecting the electrification of the urban rail transit substation has the problems of difficult actual operation and more consumed manpower and material resources. The invention can check the differential protection polarity and the primary cable phase verification of the protection device by applying current to the high-voltage terminal of the power transformer and returning the current to the outlet side of the upper-stage substation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of an urban rail transit substation energization detection method according to an embodiment of the present invention.
Fig. 2 is a diagram of a structure of detecting the power-on of a substation of a GIS cabinet according to an embodiment of the present invention.
Fig. 3 is a structure diagram of the power-on detection of the substation of the AIS cabinet according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Fig. 1 is a flowchart of an urban rail transit substation energization detection method according to an embodiment of the present invention. As shown in fig. 1, the invention discloses a method for detecting the electrification of an urban rail transit substation, which comprises the following steps:
s101: and maintaining the feeder line of the main substation to be grounded, or short-circuiting the three phases of the bus side of the current transformer of the main substation. The master substation and the slave substations form a path. In this embodiment, the maintaining the ground includes closing the line-in/out disconnectors and circuit breakers of the master substation and the slave substations
S102: and closing an isolating switch of a power transformer feeder of the tail end substation, closing a breaker of the power transformer feeder, and forming a passage between the tail end substation and the main substation as well as the auxiliary substation. In this embodiment, in order to prevent the power transformer from tripping, the protection device of the power transformer is in a state where the protection function is exited. The main substation, the slave substations and the end substations include all substations supplied with power through the feeder line. The number of the slave substations is 3-6.
S103: a first set current is input to A, B phases on the high voltage side of the power transformer. In this embodiment, the first setting current is input through the current source. The first set current may be selected to be 5A. A first determination result is obtained by determining whether or not the current flowing through the protection devices of the main substation, the slave substation, and the end substation is correct. In this embodiment, the determining whether or not the magnitudes of the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct includes: the method includes the steps of determining whether or not the values of the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct, and determining whether or not the polarities of the currents flowing through the protection devices of the main substation and the slave substation are correct. If the first judgment result is negative, the main substation or the auxiliary substation has wiring errors, the current needs to be stopped, and the reason is found according to the specific current condition.
S104: if the first determination result is yes, the second set current is input to the A, C phase on the high-voltage side of the power transformer. In this embodiment, the second setting current is optionally 5A. And judging whether the current flowing through the protection devices of the main substation, the slave substation and the tail end substation is correct or not to obtain a second judgment result. In this embodiment, the determining whether or not the magnitudes of the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct includes: the method includes the steps of determining whether or not the values of the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct, and determining whether or not the polarities of the currents flowing through the protection devices of the main substation and the slave substation are correct. If the second judgment result is negative, the main substation or the auxiliary substation has wiring errors, the current needs to be stopped, and the reason is found according to the specific current condition.
S105: if the second determination result is yes, a third set current is input to the B, C phase on the high-voltage side of the power transformer. In this embodiment, the third setting current is optionally 5A. And judging whether the current flowing through the protection devices of the main substation, the slave substation and the tail end substation is correct or not to obtain a third judgment result. In this embodiment, the determining whether or not the magnitudes of the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct includes: the method includes the steps of determining whether or not the values of the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct, and determining whether or not the polarities of the currents flowing through the protection devices of the main substation and the slave substation are correct. In this embodiment, if the third determination result is negative, the main substation or the slave substation has a wiring error, and the current application needs to be stopped, and the cause is found according to the specific current condition.
S106: and if the third judgment result is yes, the main substation, the slave substation and the tail end substation are correctly wired.
In this embodiment, if the difference between the value of the current flowing through the protection devices of the main substation, the slave substation, and the end substation and the input current is zero and the phase of the current is the same as the phase of the input current, the current is correct.
Compared with the prior art, the invention can check the differential protection polarity and primary cable phase verification of the protection device by applying current to the high-voltage terminal of the power transformer and returning the current to the outlet side of the upper-stage substation. The device required by the invention is only a current source, and the device is simple, light and convenient to carry. When the device is used, 3-6 substations can be verified by once current supply without removing any cable, so that the device is convenient and quick, and the time is saved. And reliable guarantee is provided for smooth power transmission.
In a specific embodiment, after the third determination result is yes, a fourth set current is input to the A, B phase on the high-voltage side of the power transformer, and a fourth determination result is obtained by determining whether or not the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct. And if the fourth judgment result is negative, the main substation or the auxiliary substation has wiring errors, the current is required to be stopped to be added, and the reason is found according to the specific current condition. If the fourth determination result is yes, a fifth set current is input to the A, C phase on the high-voltage side of the power transformer, and it is determined whether or not the currents flowing through the protection devices of the main substation, the sub-substation, and the end substation are correct, thereby obtaining a fifth determination result. And if the fifth judgment result is negative, the main substation or the auxiliary substation has wiring errors, the current needs to be stopped being added, and the reason is found according to the specific current condition. If the fifth determination result is yes, a sixth set current is input to the B, C phase on the high-voltage side of the power transformer, and a sixth determination result is obtained by determining whether or not the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct. If the sixth judgment result is negative, the main substation or the auxiliary substation has wiring errors, the current needs to be stopped, and the reason is found according to the specific current condition. If the sixth judgment result is yes, the main substation, the slave substation and the end substation are correctly wired.
In this embodiment, the determining whether or not the magnitudes of the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct includes: the method includes determining whether or not the magnitudes of currents flowing through the protection devices of the main substation, the slave substation, and the end substation are the same, and determining whether or not the polarities of the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct. The fourth setting current, the fifth setting current and the sixth setting current are all selected to be larger than the maximum value of the first setting current, the second setting current and the third setting current. The fourth setting current, the fifth setting current and the sixth setting current are all optionally 20A.
Fig. 2 is a diagram of a structure of detecting the power-on of a substation of a GIS cabinet according to an embodiment of the present invention. As shown in fig. 2, the feeder of the main substation is maintained and grounded, the current source is controlled to apply current to the terminal of the high-voltage side of the power transformer of the end substation, the current is sent to the outgoing line side of the upper-stage substation, and the differential protection polarity and the primary cable phase are verified by checking the protection device.
Fig. 3 is a structure diagram of the power-on detection of the substation of the AIS cabinet according to the embodiment of the present invention. As shown in fig. 3, when the main substation, the slave substation and the end substation are all the substations of the AIS cabinet, the method further includes short-circuiting the copper bars on the bus side a/B/C of the current transformer of the main substation feeder line by short-circuiting flexible cables.
The invention also discloses a device for detecting the electrification of the urban rail transit substation, which comprises a current source. When the short-circuit protection device is used, a feeder line of a main substation is maintained and grounded or three phases of the bus side of a current transformer of the main substation are short-circuited, and a passage is formed between a secondary substation and the main substation; and closing an isolating switch of a power transformer feeder of the tail end substation, closing a breaker of the power transformer feeder, and forming a path among the tail end substation, the main substation and the auxiliary substations. The current source is connected to A, B phases on the high-voltage side of the power transformer, a first set current is input, and whether the current flowing through the protection devices of the main substation, the auxiliary substation and the tail-end substation is correct or not is judged to obtain a first judgment result. If the first judgment result is yes, the current source is connected to A, C phases on the high-voltage side of the power transformer, a second set current is input, and whether the currents flowing through the protection devices of the main substation, the auxiliary substation and the tail end substation are correct or not is judged to obtain a second judgment result. If the second judgment result is yes, the current source is connected to B, C phases on the high-voltage side of the power transformer, a third set current is input, and whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail-end substation are correct or not is judged to obtain a third judgment result. And if the third judgment result is yes, the main substation, the slave substation and the tail end substation are correctly wired. After the third determination result is yes, the current source is further configured to input a fourth set current to the A, B phase on the high-voltage side of the power transformer, and determine whether or not the current flowing through the protection devices of the main substation, the slave substation, and the end substation is correct, thereby obtaining a fourth determination result. If the fourth determination result is yes, the current source is further configured to input a fifth set current to the A, C phase on the high-voltage side of the power transformer, and determine whether or not the current flowing through the protection devices of the main substation, the slave substation, and the end substation is correct, thereby obtaining a fifth determination result. If the fifth determination result is yes, the current source is further configured to input a sixth setting current to the B, C phase on the high-voltage side of the power transformer, and determine whether or not the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct, thereby obtaining a sixth determination result. If the sixth judgment result is yes, the main substation, the slave substation and the end substation are correctly wired.
In this embodiment, the main substation, the slave substation, and the end substation are all AIS cabinet substations. The device also comprises a short circuit wire, wherein the short circuit wire is used for short-circuiting a copper bar on the bus side of a feeder line current transformer of the main substation of the AIS cabinet.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. A method for detecting electrification of an urban rail transit substation is characterized by comprising the following steps:
a feeder line of a main substation is maintained and grounded, or three phases of a bus side of a current transformer of the main substation are short-circuited; the main substation and the slave substations form a passage;
closing an isolation switch of a power transformer feeder of a terminal substation, closing a circuit breaker of the power transformer feeder, the terminal substation forming a path with the master substation and the slave substations;
inputting a first set current to A, B phases on a high-voltage side of the power transformer, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail end substation are correct to obtain a first judgment result;
if the first judgment result is yes, inputting a second set current to A, C phases on the high-voltage side of the power transformer, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail-end substation are correct to obtain a second judgment result;
if the second determination result is yes, inputting a third set current to the B, C phase on the high-voltage side of the power transformer, and determining whether the currents flowing through the protection devices of the main substation, the slave substations and the end substation are correct to obtain a third determination result;
and if the third judgment result is yes, the main substation, the auxiliary substation and the tail end substation are correctly connected.
2. The method for detecting the electrification of the urban rail transit substation according to claim 1, wherein the step of judging whether the currents flowing through the protection devices of the main substation, the slave substations and the end substations are correct comprises the steps of:
and determining whether or not the values of the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct, and determining whether or not the polarities of the currents flowing through the protection devices of the main substation and the slave substation are correct.
3. The method for detecting the electrification of the urban rail transit substation according to claim 1, wherein the third judgment result is yes, and then the method further comprises:
inputting a fourth set current to the A, B phase on the high-voltage side of the power transformer, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail end substation are correct to obtain a fourth judgment result;
if the fourth judgment result is yes, inputting a fifth set current to the A, C phase of the high-voltage side of the power transformer, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail end substation are correct to obtain a fifth judgment result;
if the fifth judgment result is yes, inputting a sixth set current to the B, C phase of the high-voltage side of the power transformer, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail end substation are correct to obtain a sixth judgment result;
and if the sixth judgment result is yes, the main substation, the slave substation and the tail end substation are correctly connected.
4. The method for detecting the electrification of the urban rail transit substation according to claim 1, wherein the first set current, the second set current and the third set current are all 5A.
5. The method for detecting the electrification of the urban rail transit substation according to claim 3, wherein the fourth set current, the fifth set current and the sixth set current are all 20A.
6. The urban rail transit substation electrifying detection method according to claim 1, wherein a feeder line of a main substation is maintained and grounded, and the main substation, the slave substation and the terminal substation are all substations of a GIS cabinet.
7. The urban rail transit substation electrifying detection method according to claim 1, wherein three phases on the bus side of a current transformer of a main substation are short-circuited; the main substation, the slave substation and the tail end substation are all the substations of the AIS cabinet.
8. The electrified detection device of the urban rail transit substation is characterized by comprising a current source;
the method comprises the following steps of maintaining and grounding a feeder line of a main substation, or short-circuiting three phases at a bus side of a current transformer of the main substation; the main substation and the slave substations form a passage; closing an isolating switch of a power transformer feeder of a terminal substation, closing a breaker of the power transformer feeder, and supplying power to feeders of a path formed by the terminal substation, the main substation and the auxiliary substation;
the current source is connected to A, B phases on the high-voltage side of the power transformer, a first set current is input, and whether the current flowing through the protection devices of the main substation, the auxiliary substation and the tail-end substation is correct or not is judged to obtain a first judgment result;
if the first judgment result is yes, switching the current source into A, C phases on the high-voltage side of the power transformer, inputting a second set current, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail end substation are correct to obtain a second judgment result;
if the second judgment result is yes, switching the current source into B, C phases on the high-voltage side of the power transformer, inputting a third set current, and judging whether the currents flowing through the protection devices of the main substation, the auxiliary substations and the tail end substation are correct to obtain a third judgment result;
and if the third judgment result is yes, the main substation, the auxiliary substation and the tail end substation are correctly connected.
9. The urban rail transit substation energization detecting device according to claim 8, wherein after the third determination result is yes, the current source is further configured to input a fourth set current to the A, B phases on the high-voltage side of the power transformer, and determine whether or not the currents flowing through the protection devices of the main substation, the secondary substation, and the end substation are correct to obtain a fourth determination result;
if the fourth determination result is yes, the current source is further configured to input a fifth set current to the A, C phase on the high-voltage side of the power transformer, and determine whether or not the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct to obtain a fifth determination result;
if the fifth judgment result is yes, the current source is further configured to input a sixth set current to the B, C phase on the high-voltage side of the power transformer, and judge whether or not the currents flowing through the protection devices of the main substation, the slave substation, and the end substation are correct to obtain a sixth judgment result;
and if the sixth judgment result is yes, the main substation, the slave substation and the tail end substation are correctly connected.
10. The urban rail transit substation electrification detecting device according to claim 8, wherein the main substation, the slave substation and the terminal substation are all AIS cabinet substations; the electrified detection device of the urban rail transit substation further comprises a short-circuit wire, and the short-circuit wire is used for short-circuiting a copper bar on the bus side of a current transformer of the main substation of the AIS cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011422916.8A CN112698149B (en) | 2020-12-08 | 2020-12-08 | Method and device for detecting electrification of urban rail transit substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011422916.8A CN112698149B (en) | 2020-12-08 | 2020-12-08 | Method and device for detecting electrification of urban rail transit substation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112698149A true CN112698149A (en) | 2021-04-23 |
| CN112698149B CN112698149B (en) | 2022-11-18 |
Family
ID=75505590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011422916.8A Active CN112698149B (en) | 2020-12-08 | 2020-12-08 | Method and device for detecting electrification of urban rail transit substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112698149B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11299080A (en) * | 1998-04-09 | 1999-10-29 | Toshiba Corp | Protective relay device |
| CN102608485A (en) * | 2012-03-23 | 2012-07-25 | 云南电网公司 | Detection method for zero-sequence current loops of transformer substations |
| CN109283421A (en) * | 2018-10-16 | 2019-01-29 | 中铁电气化（武汉）设计研究院有限公司 | A kind of rail traction substation low-voltage is powered detection test method and device |
| CN110031718A (en) * | 2019-04-22 | 2019-07-19 | 中铁二局集团电务工程有限公司 | A kind of method of rail traction institute's low-pressure side pressurization verification ac circuit integrality |
| CN209373017U (en) * | 2018-10-16 | 2019-09-10 | 中铁电气化（武汉）设计研究院有限公司 | A kind of rail traction substation low-voltage energization detection experimental rig |
| CN110429586A (en) * | 2019-07-16 | 2019-11-08 | 西南交通大学 | The analysis method and device of power supply system |
-
2020
- 2020-12-08 CN CN202011422916.8A patent/CN112698149B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11299080A (en) * | 1998-04-09 | 1999-10-29 | Toshiba Corp | Protective relay device |
| CN102608485A (en) * | 2012-03-23 | 2012-07-25 | 云南电网公司 | Detection method for zero-sequence current loops of transformer substations |
| CN109283421A (en) * | 2018-10-16 | 2019-01-29 | 中铁电气化（武汉）设计研究院有限公司 | A kind of rail traction substation low-voltage is powered detection test method and device |
| CN209373017U (en) * | 2018-10-16 | 2019-09-10 | 中铁电气化（武汉）设计研究院有限公司 | A kind of rail traction substation low-voltage energization detection experimental rig |
| CN110031718A (en) * | 2019-04-22 | 2019-07-19 | 中铁二局集团电务工程有限公司 | A kind of method of rail traction institute's low-pressure side pressurization verification ac circuit integrality |
| CN110429586A (en) * | 2019-07-16 | 2019-11-08 | 西南交通大学 | The analysis method and device of power supply system |
Non-Patent Citations (1)
| Title |
|---|
| 贺小锋: "35KV变电所施工技术", 《安装》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112698149B (en) | 2022-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3506445B1 (en) | System for identification of a feeder with high-ohmic earth fault in a distribution network | |
| JP6805252B2 (en) | Inverters with system cutoff points and insulation resistance measurements, and methods for measuring insulation resistance | |
| CN103267928B (en) | Low-current system single-phase earth fault line selection control circuit | |
| CN104635107A (en) | Small-current grounding fault line selection system and line selection method | |
| CN101958530A (en) | Main transformer differential protection CT polarity check method of pumped storage power station | |
| CN104934950B (en) | A kind of guard method of multistage DC distribution feeder line | |
| CN108983020A (en) | The method and measuring device of the production process of voltage source are established for monitoring modular | |
| CN101403779B (en) | Parameter measuring apparatus and system for high tension power line | |
| CN111226363A (en) | Method and device for identifying fault sections in a multi-terminal hybrid line | |
| CN102280864A (en) | Post-failure live treatment method for protection device of distribution network system and portable protection device | |
| CN203204115U (en) | Control circuit for selection of single-phase ground faults of low-current system | |
| JP2009268188A (en) | Charger for electric vehicle | |
| CN106885959B (en) | Test method for replacing short-circuit copper bar by grounding knife switch in power plant electric main start test | |
| CN207457417U (en) | A kind of Simple Substation dc bus insulation monitoring device | |
| JP2018036054A (en) | Earth detector, ground fault protection device, and method for detecting ground fault | |
| CN112698149B (en) | Method and device for detecting electrification of urban rail transit substation | |
| Gudzius et al. | Characteristics of fault detection system for smart grid distribution network | |
| CN102177617B (en) | Device and method for protecting link in medium-, high- or very high-voltage electric network | |
| CN103308811B (en) | 750kV transformer station subsystem debugging apparatus | |
| CN202330619U (en) | Novel intelligent low-current grounded line selection device | |
| CN103018631A (en) | System for 10kV fault line detection | |
| CN104685749B (en) | Circuit device with inverter | |
| Al-Abdulwahab et al. | Reliability assessment of distribution system with innovative Smart Grid technology implementation | |
| CN106877276A (en) | Reclosing device | |
| CN203287459U (en) | Subsystem debugging device of 750 kV transformer station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |