CN213990152U - 330kV high-voltage parallel reactor compensation station system - Google Patents
330kV high-voltage parallel reactor compensation station system Download PDFInfo
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- CN213990152U CN213990152U CN202022981334.5U CN202022981334U CN213990152U CN 213990152 U CN213990152 U CN 213990152U CN 202022981334 U CN202022981334 U CN 202022981334U CN 213990152 U CN213990152 U CN 213990152U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 230000001965 increasing effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The utility model discloses a 330kV high voltage parallel reactor compensation station system, including the compensation station body and set up 330kV high voltage parallel reactor, isolator, arrester, voltage transformer and the cable terminal in the compensation station, wherein, high voltage overhead transmission line draws high tension cable to cable management corridor through isolator parallel connection 330kV high voltage parallel reactor in the post through double framework introduction, draws high tension cable to cable management corridor through the cable terminal, and 330kV high voltage parallel reactor connects arrester, voltage transformer through the downlead. The compensation station can solve the problems of power frequency overvoltage and operation overvoltage generated by long-distance transmission of large-scale high-voltage cables, improve voltage distribution along the line and reactive power distribution in light-load circuits, and reduce line loss.
Description
Technical Field
The utility model relates to a parallelly connected electricity high voltage reactor compensation station, concretely relates to 330kV high voltage parallel reactor compensation station system.
Background
The improvement is opened, the urbanization process is accelerated, the urban power load demand is increased rapidly, and the large-scale construction of the high-voltage and ultra-high-voltage overhead transmission lines solves the urban power supply demand problem to a great extent. However, with the rapid expansion of urban areas and the increasing requirements of citizens on quality of life and urban environment, the appearance of urban cities is affected by high-voltage overhead lines, and the development of cities is restricted. Therefore, cities such as Beijing, Shanghai, Nanjing, Xian and the like successively start and build a batch of 220kV, 330kV and 500kV overhead transmission line ground transfer projects, and a good demonstration effect is achieved.
With the grounding of a large number of high-voltage overhead lines, when a large number of large-scale long-distance high-voltage cables are in a line live state, a considerable amount of capacitive reactive power (namely charging power) generated in cable line interphase and ground capacitance is far higher than the charging power generated by the overhead lines, the charging power per kilometer can reach 8.6MVar, and when large-capacity capacitive power passes through inductive elements (a generator, a transformer and a power transmission line) of a system, the terminal voltage is about to rise, namely, the phenomenon of capacity rise, which brings great challenges to the safety and stability of a power grid.
The above problems are solved by installing shunt reactors of the same voltage class on some line sides of the ultra-high voltage distribution device of 330kV and above, and the following objects can be achieved:
(1) and reducing the power frequency voltage increase value.
The "volume-rise" phenomenon is particularly severe when the system is operated in a small manner. After the shunt reactor is connected to the ultrahigh voltage transmission line, the rise of the power frequency voltage at the tail end of the line can be obviously reduced.
(2) The operating overvoltage is reduced.
When the circuit breaker is used for switching on or cutting off part of electrical elements in a system, the operation overvoltage can appear on a fracture of the circuit breaker, the operation overvoltage often appears on the basis of the increase of power frequency voltage, such as load shedding, single-phase grounding and the like, the increase of the power frequency voltage is generated, when the circuit breaker cuts off a grounding fault or is reclosed after the grounding fault is cut off, the system operation overvoltage is caused, and the power frequency voltage increase and the operation overvoltage are superposed, so that the operation overvoltage is higher. Therefore, the degree of the power frequency voltage rise directly affects the magnitude of the operating overvoltage. After the shunt reactor is additionally arranged, the increase of power frequency voltage is limited, so that the amplitude of the operation overvoltage is reduced.
When the no-load line with the shunt reactor is cut off, residual charges on the cut-off line are discharged to the ground along the reactor, so that the recovery voltage on the fracture of the circuit breaker is slowly increased from zero, the possibility of restriking of the fracture of the circuit breaker is greatly reduced, and the operation overvoltage is also reduced.
(3) Improve the voltage distribution along the line and the reactive distribution in the light load line and reduce the line loss.
When the power transmitted on the line is not equal to the natural power, the voltage of each point along the line deviates from a rated value, sometimes even greatly, for example, the increase of the line voltage can be restrained by the compensation of a shunt reactor.
At present, the area where the overhead transmission line falls to the ground is just the area where the city rapidly develops, and most transformer substations in the area have no extension possibility and cannot be provided with newly-added high-voltage shunt reactors.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a 330kV high voltage shunt reactor compensation station system, this compensation station can solve the power frequency overvoltage that extensive high voltage cable long distance transmission produced, operate the problem of overvoltage, improves the reactive power distribution in voltage distribution and the underloading circuit along the line and reduces the line loss.
In order to achieve the above object, 330kV high voltage parallel reactor compensation station system include the compensation station body and set up 330kV high voltage parallel reactor, isolator, arrester, voltage transformer and the cable termination in the compensation station, wherein, high voltage overhead transmission line draws high tension cable to cable management corridor through isolator parallel connection 330kV high voltage parallel reactor in the post through double framework introduction, 330kV high voltage parallel reactor connects arrester, voltage transformer through the downlead.
The high-voltage shunt reactor is arranged in the middle of the compensation station body in a straight line shape.
The compensation station body is also internally provided with a master control communication room, a monitoring center for circuits and an exhibition hall.
The lightning arrester is a zinc oxide lightning arrester.
The 330kV high-voltage parallel reactor is an outdoor three-phase oil-immersed high-voltage reactor.
The utility model discloses following beneficial effect has:
330kV high voltage shunt reactor compensation station system when concrete operation, arrange 330kV high voltage shunt reactor, isolator, arrester, voltage transformer and cable terminal equipartition in the compensation station, realize the purpose that high-voltage overhead transmission line fell to the ground, simultaneously can be in the station a large amount of capacitive idle that balanced long distance high tension cable transmission produced, solve the power frequency overvoltage that extensive high tension cable long distance transmission produced, the problem of operation overvoltage, improve the reactive distribution and the reduction line loss in voltage distribution and the underloading circuit along the line.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, 330kV high voltage parallel reactor compensation station system include the compensation station body and set up 330kV high voltage parallel reactor, isolator, arrester, voltage transformer and the cable terminal in the compensation station, wherein, high voltage overhead transmission line draws high tension cable to cable management corridor through isolator parallel connection 330kV high voltage parallel reactor in the post through double framework introduction, 330kV high voltage parallel reactor connects arrester, voltage transformer through the downlead.
The high-voltage shunt reactor is arranged in the middle of the compensation station body in a straight line shape.
The compensation station body is also internally provided with a master control communication room, a monitoring center for circuits and an exhibition hall.
It should be noted that the utility model discloses in arranging 330kV high voltage shunt reactor, isolator, arrester, voltage transformer and cable terminal equipartition in the compensation station, realize the purpose that high tension overhead transmission line falls to the ground, can be in the station simultaneously the transmission of balanced long distance high tension cable produce a large amount of capacitive idle.
Claims (3)
1. A330 kV high-voltage parallel reactor compensation station system is characterized by comprising a compensation station body, a 330kV high-voltage parallel reactor, an isolating switch, an arrester, a voltage transformer and a cable terminal, wherein the 330kV high-voltage parallel reactor, the isolating switch, the arrester, the voltage transformer and the cable terminal are arranged in the compensation station, the arrester is a zinc oxide arrester, a high-voltage overhead transmission line is led into the station through a double-row framework and then is connected with the 330kV high-voltage parallel reactor in parallel through the isolating switch, a high-voltage cable is led out to a cable duct through the cable terminal, and the 330kV high-voltage parallel reactor is connected with the arrester and the voltage transformer through a down lead;
the high-voltage shunt reactor is arranged in the middle of the compensation station body in a straight line shape.
2. The 330kV high-voltage shunt reactor compensation station system as claimed in claim 1, wherein a main control communication room, a monitoring center for lines and an exhibition hall are further arranged in the compensation station body.
3. The 330kV high-voltage shunt reactor compensation station system according to claim 1, wherein the 330kV high-voltage shunt reactor is an outdoor, three-phase or oil-immersed high-voltage reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022981334.5U CN213990152U (en) | 2020-12-10 | 2020-12-10 | 330kV high-voltage parallel reactor compensation station system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022981334.5U CN213990152U (en) | 2020-12-10 | 2020-12-10 | 330kV high-voltage parallel reactor compensation station system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213990152U true CN213990152U (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022981334.5U Active CN213990152U (en) | 2020-12-10 | 2020-12-10 | 330kV high-voltage parallel reactor compensation station system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213990152U (en) |
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2020
- 2020-12-10 CN CN202022981334.5U patent/CN213990152U/en active Active
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