CN112003232B - Transformer substation tripping coincidence determination method based on network topology - Google Patents
Transformer substation tripping coincidence determination method based on network topology Download PDFInfo
- Publication number
- CN112003232B CN112003232B CN202010825109.4A CN202010825109A CN112003232B CN 112003232 B CN112003232 B CN 112003232B CN 202010825109 A CN202010825109 A CN 202010825109A CN 112003232 B CN112003232 B CN 112003232B
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- power station
- voltage
- substation
- scada system
- reclosing
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010248 power generation Methods 0.000 claims description 25
- 238000005259 measurement Methods 0.000 claims description 12
- 230000011664 signaling Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
Abstract
The invention relates to a substation tripping coincidence determination method based on network topology, wherein a voltage transformer is additionally arranged on an outlet line of a substation, and a voltage value is transmitted to an SCADA system through the voltage transformer; when an outgoing line switch of a transformer substation to be superposed is in a switching-off state, firstly judging whether voltage exists in an outgoing line of the transformer substation to be superposed or not; if the voltage is available, the power station with the topological connection relation of the substation to be reclosed is judged, the switching-on can not be realized directly through the input reclosing device, if the voltage is not available, the power station with the outgoing line switch of the substation to be reclosed without the topological connection relation is judged, and the switching-on can be realized through the reclosing function of the SCADA system. The reclosing method can effectively solve the problem that in the existing reclosing process, the power grid accident is easily caused by non-synchronous coincidence because the switch position does not correspond to starting and protection starting to serve as the basis for judging the reclosing, and the mode is not suitable for the condition that a receiving end has a power supply point similar to a power station.
Description
Technical Field
The invention relates to a substation tripping coincidence determination method based on network topology.
Background
In a normal situation, in a reclosing process, the starting and the protection starting which do not correspond to the switch position are used as the basis for judging the reclosing, and the method is not suitable for the situation that a receiving end has a power supply point similar to a power station, so that the problem of non-synchronous reclosing is easy to occur, and a power grid accident is caused.
Disclosure of Invention
The invention aims to provide a substation tripping coincidence judgment method based on network topology, which solves the problems that in the existing reclosing process, the corresponding starting and protection starting of a switch position are not taken as the basis for judging the reclosing, and the mode is not suitable for the condition that a receiving end has a power supply point similar to a power station, and asynchronous coincidence is easy to occur to cause a power grid accident.
The technical scheme adopted by the invention for solving the technical problems is as follows: a transformer substation tripping coincidence determination method based on network topology comprises the following steps:
step (1), additionally installing a voltage transformer on an outlet line of a transformer substation, and transmitting a voltage value to an SCADA system through the voltage transformer; when the outgoing line switch of the transformer substation to be superposed is in a brake-off state, firstly judging whether voltage exists in the outgoing line of the transformer substation to be superposed or not; if the voltage is available, judging that the power station of the substation to be reclosed has the topological connection relation, and switching on cannot be realized directly by inputting a reclosing device, entering the step (2), if the voltage is not available, judging that the power station of the substation to be reclosed does not have the topological connection relation, and switching on can be realized through the reclosing function of the SCADA system;
step (2), when the power station of which the transformer substation to be superposed has the connection relation is judged; determining whether a bus of the opposite side transformer substation connected with the transformer substation to be superposed has voltage or not through a topological relation; if the voltage is available, judging whether the power station is in a real power generation state, and entering the step (3);
if no voltage exists, remote measurement and remote communication quantity of an internet access switch corresponding to the power station show that the power station is in a non-power generation state, and the current value is 0, the power failure of the substation is judged, and the switching-on can be realized through the reclosing function of the SCADA system; if the remote measurement or remote signaling quantity shows that the power station is in a power generation state or the current value is not 0, the switching-on can not be realized directly through the reclosing function of the SCADA system, the on-line switch is required to be tripped off firstly, and then the switching-on is realized through the reclosing function of the SCADA system;
step (3) when judging whether the power station is in a real power generation state, checking a remote measurement value and a remote signaling value of an internet access switch corresponding to the power station and a current value of a main transformer of an opposite side transformer substation through the SCADA system, judging whether the power station is in the power generation state, if the remote measurement and the remote signaling indicate that the power station is in the non-power generation state and the current value is 0, judging that the power station is in the non-power generation state, and realizing closing through a reclosing function of the SCADA system; if the power station is in a power generation state or the current value is not 0, the switch-on can not be realized directly through the reclosing function of the SCADA system, the on-line switch is required to be tripped off firstly, and then the switch-on is realized through the reclosing function of the SCADA system.
The invention has the beneficial effects that: the reclosing method has the advantages that whether a line of the transformer substation has voltage or not, whether a bus of the opposite side transformer substation has voltage or not and whether the power station is in a real power generation state or not are combined, the reclosing after tripping of the transformer substation is progressively judged, the logic of the real method is strict, the reliability of reclosing is improved, the method is suitable for the situation that a receiving end has a power supply point similar to the power station, the possible asynchronous problem in the process of reclosing is effectively avoided, the existing reclosing process is effectively solved, the situation that the switching position does not correspond to starting and protective starting serves as the basis for judging the reclosing, the mode is not suitable for the situation that the receiving end has the power supply point similar to the power station, and the problem that asynchronous reclosing is easy to occur and a power grid accident is caused.
The present invention will be described in more detail with reference to the following examples.
Detailed Description
The embodiment provides a substation trip coincidence determination method based on network topology, which comprises the following steps:
step (1), additionally installing a voltage transformer on an outlet line of a transformer substation, and transmitting a voltage value to an SCADA system through the voltage transformer; when an outgoing line switch of a transformer substation to be superposed is in a switching-off state, firstly judging whether voltage exists in an outgoing line of the transformer substation to be superposed or not; if the voltage is available, judging that the power station of the substation to be reclosed has the topological connection relation, and switching on cannot be realized directly by inputting a reclosing device, entering the step (2), if the voltage is not available, judging that the power station of the substation to be reclosed does not have the topological connection relation, and switching on can be realized through the reclosing function of the SCADA system;
step (2), when the power station of which the transformer substation to be superposed has the connection relation is judged; determining whether a bus of the opposite side transformer substation connected with the transformer substation to be superposed has voltage or not through a topological relation; if the voltage is available, judging whether the power station is in a real power generation state, and entering the step (3);
if no voltage exists, remote measurement and remote communication quantity of an internet access switch corresponding to the power station show that the power station is in a non-power generation state, and the current value is 0, the power failure of the substation is judged, and the switching-on can be realized through the reclosing function of the SCADA system; if the remote measurement or remote signaling quantity shows that the power station is in a power generation state or the current value is not 0, the switching-on can not be realized directly through the reclosing function of the SCADA system, the on-line switch is required to be tripped off firstly, and then the switching-on is realized through the reclosing function of the SCADA system; the current value here is the current value of the on-line switch.
Step (3) when judging whether the power station is in a real power generation state, checking a remote measurement value and a remote signaling value of an internet access switch corresponding to the power station and a current value of a main transformer of a transformer substation on the opposite side of the power station through the SCADA system, judging whether the power station is in the power generation state, and if the remote measurement value and the remote signaling value show that the power station is in the non-power generation state and the current value is 0, judging that the power station is in the non-power generation state, and realizing closing through a reclosing function of the SCADA system; if the power station is in a power generation state or the current value is not 0, the switch-on can not be realized directly through the reclosing function of the SCADA system, the on-line switch is required to be tripped off firstly, and then the switch-on is realized through the reclosing function of the SCADA system.
In the description of the present invention, it is to be understood that the terms "central," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used merely for convenience in describing and simplifying the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention. 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.
In the description of the present invention, it should 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; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The above embodiments are not to be considered from a limiting point of view, but rather from an illustrative point of view. The scope of the invention is indicated by the appended claims rather than by the foregoing description, and all differences within the scope and range of equivalents thereof will be construed as being included in the present invention. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.
Claims (1)
1. A transformer substation tripping coincidence determination method based on network topology is characterized by comprising the following steps: the method comprises the following steps:
step (1), additionally installing a voltage transformer on an outlet line of a transformer substation, and transmitting a voltage value to an SCADA system through the voltage transformer; when an outgoing line switch of a transformer substation to be superposed is in a switching-off state, firstly judging whether voltage exists in an outgoing line of the transformer substation to be superposed or not; if the voltage is available, judging that the power station of the substation to be reclosed has the topological connection relation, and switching on cannot be realized directly by inputting a reclosing device, entering the step (2), if the voltage is not available, judging that the power station of the substation to be reclosed does not have the topological connection relation, and switching on can be realized through the reclosing function of the SCADA system;
step (2), when the power station of which the transformer substation to be superposed has the connection relation is judged; determining whether a bus of the opposite side transformer substation connected with the transformer substation to be superposed has voltage or not through a topological relation; if the voltage is available, judging whether the power station is in a real power generation state, and entering the step (3);
if no voltage exists, the remote measurement and remote communication quantity of the corresponding internet access switch of the power station show that the power station is in a non-power generation state, and the current value is 0, the power failure of the power station is judged, and the switching-on can be realized through the reclosing function of the SCADA system; if the remote measurement or remote signaling quantity shows that the power station is in a power generation state or the current value is not 0, the switching-on can not be realized directly through the reclosing function of the SCADA system, the on-line switch is required to be tripped off firstly, and then the switching-on is realized through the reclosing function of the SCADA system;
step (3) when judging whether the power station is in a real power generation state, checking a remote measurement value and a remote signaling value of an internet access switch corresponding to the power station and a current value of a main transformer of an opposite side transformer substation through the SCADA system, judging whether the power station is in the power generation state, if the remote measurement and the remote signaling indicate that the power station is in the non-power generation state and the current value is 0, judging that the power station is in the non-power generation state, and realizing closing through a reclosing function of the SCADA system; if the power station is in a power generation state or the current value is not 0, the switch-on can not be realized directly through the reclosing function of the SCADA system, the on-line switch is required to be tripped off firstly, and then the switch-on is realized through the reclosing function of the SCADA system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010825109.4A CN112003232B (en) | 2020-08-17 | 2020-08-17 | Transformer substation tripping coincidence determination method based on network topology |
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| CN202010825109.4A CN112003232B (en) | 2020-08-17 | 2020-08-17 | Transformer substation tripping coincidence determination method based on network topology |
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| CN112003232A CN112003232A (en) | 2020-11-27 |
| CN112003232B true CN112003232B (en) | 2022-07-01 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124672A (en) * | 2014-07-28 | 2014-10-29 | 国家电网公司 | Power restoration method for voltage type fault section front end |
| CN205790973U (en) * | 2016-06-17 | 2016-12-07 | 广东电网有限责任公司揭阳供电局 | The electric power system of transformer lines unit connection |
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2020
- 2020-08-17 CN CN202010825109.4A patent/CN112003232B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124672A (en) * | 2014-07-28 | 2014-10-29 | 国家电网公司 | Power restoration method for voltage type fault section front end |
| CN205790973U (en) * | 2016-06-17 | 2016-12-07 | 广东电网有限责任公司揭阳供电局 | The electric power system of transformer lines unit connection |
Non-Patent Citations (1)
| Title |
|---|
| 图论在智能变电站二次安全措施中的应用探索;黄文英等;《电网技术》;20200131;第44卷(第1期);第291-297页、附录A * |
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| CN112003232A (en) | 2020-11-27 |
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