CN205583650U - Differential protective system is opened by photovoltaic power plant transformer - Google Patents
Differential protective system is opened by photovoltaic power plant transformer Download PDFInfo
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- CN205583650U CN205583650U CN201620406901.5U CN201620406901U CN205583650U CN 205583650 U CN205583650 U CN 205583650U CN 201620406901 U CN201620406901 U CN 201620406901U CN 205583650 U CN205583650 U CN 205583650U
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- opened
- differential current
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- transformer
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Abstract
The utility model relates to a differential protective system is opened by photovoltaic power plant transformer, by the box transformer of photovoltaic, inlay entry control system, communication module, backend server monitored control system and constitute, the box transformer output end of its photovoltaic opens signal modules with high -pressure side differential current mutual -inductor, low tension side differential current mutual -inductor, gas, the temperature is opened signal modules and is linked to each other, and wherein an analog quantity communication module 1 is connected jointly to high -pressure side differential current mutual -inductor and low tension side differential current mutual -inductor lower extreme, gas opens signal modules and one division of income volume collection module is connected jointly to temperature division income signal modules lower extreme, the beneficial effects of the utility model are that: the completion is to the all -round protection of photovoltaic power plant transformer configuration, and the perfect protection configuration of photovoltaic power plant transformer has improved photovoltaic power plant transformer reliability of operation.
Description
Technical field:
This utility model relates to a kind of simple in construction, and the photovoltaic plant transformator of convenient application is opened into differential protection.
Background technology:
China's photovoltaic generation industry fast development, to the energy supply of increase China, readjusting the energy structure and preserving the ecological environment serves positive role.The operation of photovoltaic plant box type transformer has the factor of a lot of causing trouble; wherein happen occasionally because temperature anomaly causes transformer fault even to burn; so for the stability and the safety that improve box type transformer work in photovoltaic plant; every case becomes all can configure a temperature intelligent supervising device, and the factor of these possible causing trouble is monitored and is protected.Temperature acquisition point dispersion in becoming due to photovoltaic plant case, difficult wiring, it is difficult to all monitor each collection point data, directly affects photovoltaic plant box type transformer reliability of operation, for this this utility model very well by each temperature acquisition point data concentrated collection and use wireless communication mode to upload, in achieving photovoltaic plant box type transformer, temperature monitors entirely, decreases monitoring in real time and the difficulty of management of staff.
Utility model content
This utility model provides a kind of photovoltaic plant transformator to open into differential protection; mainly solve the running protection requirement in particular circumstances of photovoltaic plant transformator; the perfect relaying configuration of photovoltaic plant transformator, improves photovoltaic plant transformator reliability of operation and safety.
This utility model is mainly characterized by: be made up of photovoltaic box type transformer, embedded control system, communication module, background server monitoring system, its photovoltaic box type transformer outfan is opened with high-pressure side differential current transformer, low-pressure side differential current transformer, gas and is opened be connected into signaling module into signaling module, temperature, and wherein high-pressure side differential current transformer and low-pressure side differential current transformer lower end connect an analogue collection module jointly；Gas is opened to open into signaling module and temperature and is jointly connected an intake acquisition module into signaling module lower end；Its analogue collection module is all connected with embedded control system with intake acquisition module outfan, and embedded control system output port is connected with communication module, and communication module output port is connected with background server monitoring system.
The beneficial effects of the utility model are: complete the configuration of the omnibearing protection to photovoltaic plant transformator, the perfect relaying configuration of photovoltaic plant transformator, improve photovoltaic plant transformator reliability of operation.
Accompanying drawing explanation
Fig. 1 is product structure principle schematic of the present utility model.
Detailed description of the invention
By detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings:
As shown in Figure 1: a kind of photovoltaic plant transformator is opened into differential protection; it is made up of photovoltaic box type transformer, embedded control system, communication module, background server monitoring system; its photovoltaic box type transformer outfan is opened with high-pressure side differential current transformer, low-pressure side differential current transformer, gas and is opened be connected into signaling module into signaling module, temperature, and wherein high-pressure side differential current transformer and low-pressure side differential current transformer lower end connect an analogue collection module jointly；Gas is opened to open into signaling module and temperature and is jointly connected an intake acquisition module into signaling module lower end；Its analogue collection module is all connected with embedded control system with intake acquisition module outfan, and embedded control system output port is connected with communication module, and communication module output port is connected with background server monitoring system.
Operation principle:
Analog quantity is tested: the result of analog measurement shows in " measuring in real time " menu.
Configuring condition according to high-pressure side with low-pressure side CT arranges the parameter of " system setting " menu interior " simulation control word ", selects class rating and the number of both sides CT of current transformer；The mode of connection of high and low pressure side current rating and transformator is set in " definite value setting " menu.Device automatically adjusts the phase place of low-pressure side electric current, the display adapting to current value according to the parameter arranged and adjusts the judgment formula of CT broken string.If transformator is Y/ Δ-11 type wiring, in " definite value setting " menu, " Y/ Δ type " place is set to 11；Transformator is that interior " the Y/ Δ type " place of Y/ Δ-01 type wiring then " definite value setting " menu is set to 01；Transformator is that interior " the Y/ Δ type " place of Y/Y-12 type wiring then " definite value setting " menu is set to 12.Device calculates the phase current of every phase, spill current and stalling current.Spill current and stalling current are all converted to grade same with high voltage side current, conversion factor K=high-pressure side rated value/low-pressure side rated value.
Difference stream Icd=| Im+K*In ∠ φ；|
Stalling current Ires=| Im-K*In ∠ φ |/2；
Im, In are respectively high-pressure side, low-pressure side electric current；∠ φ represents and is adjusted to differ 1800 with high voltage side current by low-pressure side current phase.
Intake is tested: current intake state shows in " opening into state " menu.
To open and open into then corresponding intake action time input Kx short circuit (disconnecting during normally closed contact) with corresponding into negative supply (-KM).In " system setting " menu, " opening into contact " place can arrange effective logic of every road intake input is normally opened or normally closed.
Output measurement examination: the corresponding relay Reliability of Microprocessor with busy relay in " outputing control " menu, can be controlled.
Menu of " outputing control " is interior presses the actuating of relay once (output passive null contact) that " determination " key then cursor is expert at.In " system setting " menu, " outputing mode " place can arrange corresponding relay is level or the pulse way of output；In " system setting " menu, " alternate outlets association " place can arrange alternate outlets is that protection is jumped or the cascade (alternate outlets may be configured as level or the pulse way of output equally, and the relay after cascade is not affected by the working method being cascaded relay) of alarm outlet.To be always maintained at after the actuating of relay during level way of output；Automatic resetting after the actuating of relay 300 milliseconds during the pulse way of output.Performing involution order can be by all of relay and status indicator lamp involution.
Communication function is tested:
Device configures RS-232 (device debugging is used) interface simultaneously, device can only communicate with host computer, first correct order wire between attachment means and host computer, then in " system setting " menu, " messaging parameter " place selects corresponding communication mode, address, baud rate (during Ethernet pattern, communication speed is fixed as 10M) are set, the communication parameter configuration keeping host computer is consistent with device, performs host computer communication software and can realize communication.Communication function can realize remote measurement between host computer and device, remote control, remote signalling, read-write definite value etc..When intake state changes, device can send the time that intake state after change and change occur to host computer；When event occurs, device can send the SOE information of event to host computer in time, and after protection act, device can send the data of failure wave-recording to host computer in time.The communication terminal of same names is please connected on same transmission line when accessing bus by many table apparatus.Order wire connects the detailed description with parameter configuration and refers to " communication terminal mode of connection and parameter configuration guide " chapters and sections.
Claims (1)
1. a photovoltaic plant transformator is opened into differential protection; it is characterized in that: be made up of photovoltaic box type transformer, embedded control system, communication module, background server monitoring system; its photovoltaic box type transformer outfan is opened with high-pressure side differential current transformer, low-pressure side differential current transformer, gas and is opened be connected into signaling module into signaling module, temperature, and wherein high-pressure side differential current transformer and low-pressure side differential current transformer lower end connect an analogue collection module jointly；Gas is opened to open into signaling module and temperature and is jointly connected an intake acquisition module into signaling module lower end；Its analogue collection module is all connected with embedded control system with intake acquisition module outfan, and embedded control system output port is connected with communication module, and communication module output port is connected with background server monitoring system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620406901.5U CN205583650U (en) | 2016-05-05 | 2016-05-05 | Differential protective system is opened by photovoltaic power plant transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620406901.5U CN205583650U (en) | 2016-05-05 | 2016-05-05 | Differential protective system is opened by photovoltaic power plant transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205583650U true CN205583650U (en) | 2016-09-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620406901.5U Expired - Fee Related CN205583650U (en) | 2016-05-05 | 2016-05-05 | Differential protective system is opened by photovoltaic power plant transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205583650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111834984A (en) * | 2020-06-17 | 2020-10-27 | 南京国电南自电网自动化有限公司 | Method, system and device for protecting non-electric quantity of transformer |
-
2016
- 2016-05-05 CN CN201620406901.5U patent/CN205583650U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111834984A (en) * | 2020-06-17 | 2020-10-27 | 南京国电南自电网自动化有限公司 | Method, system and device for protecting non-electric quantity of transformer |
| CN111834984B (en) * | 2020-06-17 | 2022-09-09 | 南京国电南自电网自动化有限公司 | Method, system and device for protecting non-electric quantity of transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 |