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The rapid anti-harmonic intelligent power capacitor is designed for the situation where the harmonic content of the power network is large, the reactive power changes rapidly, and ordinary power capacitors cannot operate normally. It uses special technologies and processes and is composed of a circuit breaker, a thyristor, a reactor, and an aluminum-shell low-voltage power capacitor. It has the characteristics of fast response speed, zero-crossing switching of the capacitor, no inrush current impact, effectively prolonging the service life of the capacitor, no amplification effect on harmonics, and the ability to absorb part of the harmonics.
9. The construction plan should also be attached with the pouring route map, layered pouring map, and temperature measurement point layout map of mass concrete. The construction plan is the theoretical guidance for construction practice. It guides actual operations through theoretical demonstration and then verifies the feasibility and reliability of the theory through practice. Only through repeated theoretical demonstrations and practical tests can the construction technology be continuously improved and the construction quality be ensured. Therefore, when formulating the construction plan, it is not only necessary.
It is widely applicable to indoor high-voltage electrical equipment with a voltage of 3.6 - 40.5KV and a frequency of 50Hz. The new voltage sensor (sensing unit) has the advantages of beautiful appearance, small partial discharge, large creepage distance, and high bending load. The indoor electromagnetic door lock is an electronically controlled mechanism interlocking device to prevent electrical misoperation of high-voltage switchgear. It is mainly used for the cabinet doors of high-voltage switchgear and other places that require safety interlocking to achieve interlocking, prevent accidental entry into live intervals and misoperation, and is an indispensable locking device for power generation and power supply departments.Intelligent Reactive Power CompensationCapacitoris an intelligent reactive power compensation device for the 0.4kV low-voltage distribution network to reduce line losses, improve power factor, improve power quality, and save energy. Based on the intelligentReactive Power CompensationControllerThe designed reactive power compensation scheme can refer to the following principles
| Non-linear load ratio | Reactive power compensation design scheme | | | |
| Three-phase balanced static load | Three-phase unbalanced static load | Three-phase balanced frequently changing load | Three-phase unbalanced frequently changing load | |
| Non-linear equipment in the load ≤ 15% of transformer capacity (mainly linear load) | Three-phase common compensation, composite switch zero-crossing switching, | Phase separation compensation or hybrid compensation, Composite switch zero-crossing switching; | Three-phase common compensation, thyristor switch dynamic switching | Phase separation compensation or hybrid compensation, Thyristor switch dynamic switching; |
| 15% | Three-phase common compensation Composite switch zero-crossing switching Series 6% or 12% filtering reactance in the capacitor circuit | Phase separation compensation or hybrid compensation Composite switch zero-crossing switching Series 6% or 12% non-tuned filtering reactance in the capacitor circuit | Three-phase common compensation Thyristor switch dynamic switching Series 6% or 12% non-tuned filtering reactance in the capacitor circuit | Phase separation compensation or hybrid compensation Thyristor switch dynamic switching Connect a 6% or 12% non-tuned filtering reactance in series in the capacitor circuit |
| Harmonic treatment target | Destroy the parallel resonance between the capacitor and the system, and partially absorb the 3rd, 5th, 7th and higher harmonics in the system | Destroy the parallel resonance between the capacitor and the system, and partially absorb the 3rd, 5th, 7th and higher harmonics in the system | Destroy the parallel resonance between the capacitor and the system, and partially absorb the 3rd, 5th, 7th and higher harmonics in the system | Destroy the parallel resonance between the capacitor and the system, and partially absorb the 3rd, 5th, 7th and higher harmonics in the system |
| The ratio of non-linear equipment in the load > 50% of the transformer capacity (a large number of harmonics exist) | Three-phase common compensation Zero-crossing switching of the composite switch A tuned filtering circuit composed of capacitors or reactors | Phase-separated compensation or mixed compensation Zero-crossing switching of the composite switch A tuned filtering circuit composed of capacitors or reactors | Three-phase common compensation Dynamic switching of the thyristor switch A tuned filtering circuit composed of capacitors or reactors | Phase-separated compensation or mixed compensation Dynamic switching of the thyristor switch A tuned filtering circuit composed of capacitors or reactors |
@The following figure shows the internal structure of a two-dimensional array ARRAY[1..2,1..3]. It has a total of 6 bytes of elements. Each small grid in the figure represents 1 bit in binary, and each element occupies one row. The numbers in the square brackets after ARRAY are used to define the numbers of the starting and ending elements of each dimension in that dimension, and can take integers between -32768 and 32767. The numbers between each dimension are separated by commas, and the starting and ending numbers of each dimension are separated by two decimal points. If a dimension has N elements, the numbers of the starting and ending elements of that dimension can be 1 and N. The ARRAY[1..100] structure (STRUCT) can be a combination of different types of data. Basic data types, complex data types (including arrays and structures), and user-defined data types (UDT) can be used as the elements of the structure. A structure can be composed of arrays and structures, and a structure can be nested up to 8 layers.
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