How big is the blockchain e-invoice market
At present, in the pilot project in Shenzhen, wechat payment can be issued without special conditions. It only supports the issuance of ordinary invoices, but the special VAT invoice has not been applied
extended data:
blockchain e-invoice integrates "capital flow and invoice flow", combines invoice issuing with online payment, and opens up the whole process of invoice application, invoice issuing, reimbursement and tax declaration: after online payment, users can immediately apply for invoice issuing and invoice reimbursement, You can check your invoice at any time in your card package
blockchain e-invoice issuing process
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after completing wechat payment, view the wechat payment voucher, click "invoice" below the payment voucher, and apply for invoice
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5. The invoice is automatically stored in the wechat card package. Open "I" -- "card package" -- "my ticket" to view the invoice that has been issued
6. There is no need to print the electronic invoice again. Select the invoice in the "invoice list" of wechat "card package" to complete the reimbursement immediately. Return the reimbursement amount to wechat change balance
Shenzhen became the first pilot city of blockchain electronic invoice in China, and Tencent provided technical support
by using blockchain electronic invoice, enterprises can apply for, issue, check and enter invoices on blockchain. Users can store, transfer and reimbursement on the chain. Cai Yige, general manager of Tencent's blockchain business, said that the blockchain electronic invoice optimizes the whole process of billing and reimbursement, realizing the seamless link between consumption scenarios and tax services
it's more and more convenient, and the progress of science and technology makes everyone enjoy the dividend
source: webmaster's home
however, it is no problem for virtual currency to withdraw cash in general, because there are too many counterfeit currency trading platforms in China, such as Ruitai currency, Laite currency and so on.
1. The "load" in dispatching is the electric quantity, unit: degree, also is kilowatt hour, kW & 8226; h;
load is not a constant value, but a variable value with time. Because the electrical equipment does not run at the same time, even at the same time, not all can reach the rated capacity. In addition, the working system of each electrical equipment is different, including long-term, short-term and repeated short-term
2. "Load" used in power flow calculation refers to the outgoing power flow of a node, which is the power
S=P+jQ
where p is active power
unit: W, kW, MW
q is reactive power, unit VaR, kvar, Mvar
s is complex power, unit VA, KVA, MVA
in design, if the capacity of each electrical equipment is simply added up as the basis for selecting conctor, cable section and electrical equipment capacity, the equipment will be under loaded, resulting in a waste of investment and non-ferrous metals; If it is too small, overload operation will occur
the result is either uneconomic, or overheating insulation damage and line loss increase, which will affect the safe operation of wires, cables or electrical equipment, and even cause fire accidents. Therefore, the load calculation is only close to the actual capacity
the total load of power system is the sum of the total power consumed by all electrical equipment in the system; By adding the power consumed by instry, agriculture, posts and telecommunications, transportation, municipal administration, commerce and urban and rural residents, the comprehensive power load of power system can be obtained; The power of comprehensive power load plus network loss is the power that each power plant in the system should supply, which is called the power supply load (power supply) of power system; The power supply load plus the power consumed by each power plant itself (i.e. auxiliary power) is the power that should be generated by each generator in the system, which is called the generation load (generation capacity) of the system
the load is a random change, every time the electrical equipment starts or stops, the corresponding load will change, which can be found to have a certain regularity to some extent. For example, some loads change to a certain extent with seasons (summer and winter) and enterprise working system (one shift or shift operation). The regularity of its change can be described by load curve: the so-called load curve refers to the graph of active and reactive load changing with time of electrical equipment in a certain period of time, which constitutes active load curve (P) and reactive load curve (q) respectively
the load rate required by different factories in different seasons is different, and the load rate issued by large factories and units is higher, which is for energy saving. When there is excess power, the generation of small units is usually limited, so the plants usually generate power according to the load curve issued by the dispatch, and the load rate is not assessed. Load rate = 24 hours average load / total adjustable output.